Patent Publication Number: US-7720953-B2

Title: System and method of data source detection

Description:
This non-provisional application claims the benefit of U.S. Provisional Application No. 60/672,043 filed Apr. 18, 2005, which is hereby incorporated by reference. 

   A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyrights whatsoever. 
   The present patent disclosure relates generally to a communications system for providing communications to a plurality of devices and specifically to a system and method of data source detection. 
   BACKGROUND OF THE INVENTION 
   Due to the proliferation of wireless networks, there are a continually increasing number of wireless devices in use today. These devices include mobile telephones, personal digital assistants (PDAs) with wireless communication capabilities, two-way pagers and the like. Concurrently with the increase of available wireless devices, software applications running on such devices have increased their utility. For example, the wireless device may include an application that retrieves a weather report for a list of desired cities or an application that allows a user to shop for groceries. These software applications take advantage of the ability to transmit data of the wireless network in order to provide timely and useful services to users, often in addition to voice communication. However, due to a plethora of different types of devices, restricted resources of some devices, and complexity of delivering large amounts of data to the devices, developing software applications remains a difficult and time-consuming task. 
   A wireless handheld device has limited battery power, memory and processing capacity. Since communication on a device is very expensive in terms of energy consumption, it is desirable to minimize message traffic to and from the device as much as possible. 
   With the emerging importance of Web services in the IT business, more and more IT actors are providing a standardized access to their business through the Web services. However, in the IT landscape there is still a huge number of applications not exposing information through Web services, but relying instead on different data sources: databases, CORBA applications, etc. 
   Mobile applications can be used for integrating various data source. The traditional development of wireless applications is highly impacted by the nature of the data sources the wireless application communicates with. The connection infrastructure to a specific data source (database, Web service, etc) has to be built inside the wireless application itself, consuming the valuable wireless resources. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     An embodiment of the patent disclosure will now be described by way of example only with reference to the following drawings in which: 
       FIG. 1  is a schematic diagram of an example of a communication network system; 
       FIG. 2  is a component diagram of an example of a tool for developing and generating the applications of  FIG. 1 ; 
       FIG. 3  is a component diagram of an example of the tool architecture of  FIG. 2 ; 
       FIG. 4  is a diagram illustrating an example of the distribution of user modules as plug-ins; 
       FIG. 5  shows an example of a data source detection system for detecting registered data source connectors, in accordance with an embodiment of the present patent disclosure; 
       FIG. 6  shows an example of the discovery of data source connectors (plug-ins) environment, in accordance with an embodiment of the data source detection system; and 
       FIG. 7  shows in a flowchart an example of a method of data source detection, in accordance with an embodiment of the data source detection system. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   This patent disclosure provides a wireless application with a convenient way of connecting to various data sources in a generic manner, allowing the wireless application to discover dynamically the specific data source connectors. 
   In accordance with an embodiment of the present patent disclosure, there is provided a data source detection system for detecting data sources. The data source detection system comprises a generic data source connector for connecting to a data source connector of a data source, a data source connectors repository for storing the location of the data source and a data source model for representing information contained in the data sources. 
   In accordance with another embodiment of the present patent disclosure, there is provided a method of data source detection. The method comprises the steps of reading a data source repository, locating and connecting to a data source connector of a data source and building a data source model of the data source. 
   In accordance with another embodiment of the present patent disclosure, there is provided a computer-readable medium storing instructions or statements for use in the execution in a computer of a method of data source detection. The method comprises the steps of reading a data source connector repository, locating and connecting to a data source connector of a data source, and building a data source model of the data source. 
   In accordance with another embodiment of the present patent disclosure, there is provided a propagated signal carrier carrying signals containing computer-executable instructions that can be read and executed by a computer. The computer-executable instructions being used to execute a method of data source detection. The method comprises the steps of reading a data source connector repository, locating and connecting to a data source connector of a data source, and building a data source model of the data source. 
   Advantageously, the data source detection system mitigates the resource overhead induced by data source-specific access processing when a wireless application connects to various data sources. 
   A system and method of the present patent disclosure will now be described with reference to various examples of how the embodiments can best be made and used. For convenience, like reference numerals are used throughout the description and several views of the drawings to indicate like or corresponding parts, wherein the various elements are not necessarily drawn to scale. 
   Referring to  FIG. 1 , a network system  10  comprises mobile communication devices  100  for interacting with one or more back-end data sources  106  (e.g., a schema-based service such as Web service or database that provides enterprise services used by an application  105 ) via a wireless network  102  coupled to an application gateway (AG). The devices  100  are devices such as but not limited to mobile telephones, PDAs, two-way pagers, and dual-mode communication devices. The network  10  can also have desktop computers  117  coupled though a local area network  119 . The devices  100  and desktop computers  117  of the network  10  are hereafter referred to as the devices  100  for the sake of simplicity. It is recognised that the AG and data sources  106  can be linked via extranets (e.g., the Internet) and/or intranets as is known in the art. The AG handles request/response messages initiated by the application  105  as well as subscription notifications pushed to the device  100  from the data sources  106 . The AG can function as a Data Mapping Server for mediating messaging between a client runtime RE on the device  100  and a back-end server of the data sources  106 . The Runtime Environment (RE) is an intelligent container that executes application  105  components and provides common services as needed for execution of the applications  105 . The AG can provide for asynchronous messaging for the applications  105  and can integrate and communicate with legacy back-end data sources  106 . The devices  100  transmit and receive wireless component applications technology or wireless component applications  105 , as further described below, when in communication with the data sources  106 , as well as transmit/receive messaging associated with operation of the applications  105 . The devices  100  can operate as Web clients of the data sources  106  through execution of the applications  105  when provisioned on respective runtime environments RE of the devices  100 . 
   For satisfying the appropriate messaging associated with the applications  105 , the AG communicates with the data sources  106  through various protocols (such as but not limited to HTTP, SQL, and component API) for exposing relevant business logic (methods) to the applications  105  once provisioned on the devices  100 . The applications  105  can use the business logic of the data sources  106  similarly to call a method of an object (or a function). It is recognized that the applications  105  can be downloaded/uploaded in relation to data sources  106  via the network  102  and AG directly to the devices  100 . For example, the AG is coupled to a provisioning server  108  and a discovery server  110  for providing a mechanism for optimized over-the-air provisioning of the applications  105 , including capabilities for application  105  discovery from the device  100  as listed in a Universal Description Discovery and Integration (UDDI) (for example) registry  112 . The registry  112  can be part of the discovery service implemented by the server  110 , and the registry  112  is used for publishing the applications  105 . The application  105  information in the registry  112  can contain such as but not limited to a deployment descriptor DD (contains information such as application  105  name, version, and description) as well as the location of this application  105  in an application repository  114 . 
   Referring again to  FIG. 1 , for initialization of the RE, the RE receives the AG URL and the AG public key in an MDS  115  service book. The RE uses this information to connect to the AG for initial handshaking. Device  100  provisioning or email redirector  116 , depending on the domain, pushes the MDS  115  service book to the device  100 . It is recognised there could be more than one AG in the network  10 , as desired. Once initialized, access to the applications  105  by the devices  100 , as downloaded/uploaded, can be communicated via the AG directly from the application repository  114 , and/or in association with data source  106  direct access (not shown) to the repository  114 . 
   Referring to  FIG. 1 , the applications  105  can be stored in the repository  114  as a series of packages that can be created by a developer design tool  216 , which is employed by developers of the applications  105 . The developer design tool  216  can be a RAD tool used to develop the wired and/or wireless component application  105  packages. The tool  216  can provide support for a drag-and drop graphical approach for the visual design of application  105  components such as but not limited to screens, data elements, messages and application workflow logic. The application  105  packages are represented as structured data (XML) that can be generated automatically by the tool  216  through an automatic code generation process. This tool  216  can provide for the automatic generated code to include or be otherwise augmented by an industry standard scripting language (e.g., JavaScript) or other scripting/programming languages known in the art. The availability of the application  105  packages of the repository  114  are published via the discovery service of the server  110  in the registry  112 . It is recognized that there can be more than one repository  114  and associated registries  112  as utilized by the particular network  10  configuration of the AG and associated data sources  106 . 
   Referring to  FIG. 2 , the tool  216  is operated on a computer  201  that can be connected to the network  10  via a network connection interface such as a transceiver  200  coupled via connection  218  to a device infrastructure  204 . The transceiver  200  can be used to upload completed application programs  105  to the repository  114  (see  FIG. 1 ), as well as access the registry  112  and selected data sources  106 . Referring again to  FIG. 2 , the developer design tool  216  also has a user interface  202 , coupled to the device infrastructure  204  by connection  222 , to interact with a user (not shown). The user interface  202  includes one or more user input devices such as but not limited to a keyboard, a keypad, a trackwheel, a stylus, a mouse, a microphone, and is coupled to a user output device such as a speaker (not shown) and a screen display  206 . If the display  206  is touch sensitive, then the display  206  can also be used as the user input device as controlled by the device infrastructure  204 . The user interface  202  is employed by the user of the tool  216  to coordinate the design of applications  105  using a series of editors  300  and viewers  302  (see  FIG. 3 ), using a plurality of wizards  304  to assist in or drive the workflow of the development process. 
   Referring again to  FIG. 2 , operation of the tool computer  201  is enabled by the device infrastructure  204 . The device infrastructure  204  includes a computer processor  208  and the associated memory module  210 . The computer processor  208  manipulates the operation of the network interface  200 , the user interface  202  and the display  206  of the tool  216  by executing related instructions, which are provided by an operating system and application  105  design editors  300 , wizards  304 , dialogs  305  and viewers  302  resident in the memory module  210 . Further, it is recognized that the device infrastructure  204  can include a computer-readable storage medium  212  coupled to the processor  208  for providing instructions to the processor  208  and/or to load/design the applications  105  also resident (for example) in the memory module  210 . The computer-readable medium  212  can include hardware and/or software such as, by way of example only, magnetic disks, magnetic tape, optically readable medium such as CD/DVD ROMs, and memory cards. In each case, the computer-readable medium  212  may take the form of a small disk, floppy diskette, cassette, hard disk drive, solid state memory card, or RAM provided in the memory module  210 . It should be noted that the above-listed example computer-readable mediums  212  can be used either alone or in combination. 
   Referring again to  FIG. 2 , the design tool  216  is operated on the computer  201  as an application development environment for developing the applications  105 . The development methodology of the tool  216  can be based on a visual “drag and drop” system of building the application visual, data, messaging behaviour, and runtime navigation model. The tool  216  can be structured as a set of plug-ins to a generic integrated design environment (IDE) framework, such as but not limited to the Eclipse (™) framework, or the tool  216  can be configured as a complete design framework without using plug-in architecture. For exemplary purposes only, the tool  216  will now be described as a plug-in design environment using the Eclipse framework. 
   Referring to  FIGS. 2 and 3 , Eclipse makes provisions for a basic, generic tool  216  environment that can be extended to provide custom editors, wizards, project management and a host of other functionality. The Eclipse Platform is designed for building integrated development environments (IDEs) that can be used to create applications as diverse as Web sites, embedded Java (™) programs, C++ programs, and Enterprise JavaBeans (™). The navigator view  230  shows files in a user&#39;s (e.g., developer) workspace; a text editor section  232  shows the content of a file being worked on by the user of the tool  216  to develop the application  105  and associated components in question; the tasks view section  234  shows a list of to-dos for the user of the tool  216 ; and the outline viewer section  236  shows for example a content outline of the application  105  being designed/edited, and/or may augment other views by providing information about the currently selected object such as properties of the object selected in another view. It is recognised that the tool  216  aids the developer in creating and modifying the coded definition content of the components in the structured definition language (e.g., in XML). Further, the tool  216  also aids the developer in creating, modifying, and validating the interdependencies of the definition content between the components, such as but not limited to message/data and screen/data relationships. It is also recognised that presentation on the display of wizard  304  and dialog  305  content for use by the developer (during use of the editors  300  and viewers  302 ) can be positioned in one of the sections  230 ,  232 ,  234 ,  236  and/or in a dedicated wizard section (not shown), as desired. 
   The Eclipse Platform is built on a mechanism for discovering, integrating, and running modules called plug-ins (i.e., editors  300  and viewers  302 ). When the Eclipse Platform is launched via the UI  202  of the computer  201 , the user is presented with an integrated development environment (IDE) on the display  206  composed of the set of available plug-ins, such as editors  300  and viewers  302 . The various plug-ins to the Eclipse Platform operate on regular files in the user&#39;s workspace indicated on the display  206 . The workspace consists of one or more top-level projects, where each project maps to a corresponding user-specified directory in the file system, as stored in the memory  210  (and/or accessible on the network  10 ), which is navigated using the navigator  230 . The Eclipse Platform UI paradigm is based on editors, views, and perspectives. From the user&#39;s standpoint, a workbench display  206  consists visually of views  302  and editors  300 . Perspectives manifest themselves in the selection and arrangements of editors  300  and views  302  visible on the display  206 . Editors  300  allow the user to open, edit, and save objects. The editors  300  follow an open-save-close lifecycle much like file system-based tools. When active, a selected editor  300  can contribute actions to a workbench menu and tool bar. Views  302  provide information about some object that the user is working with in the workbench. A viewer  302  may assist the editor  300  by providing information about the document being edited. For example, viewers  302  can have a simpler lifecycle than editors  300 , whereby modifications made in using a viewer  302  (such as changing a property value) are generally saved immediately, and the changes are reflected immediately in other related parts of the display  206 . It is also recognised that a workbench window of the display  206  can have several separate perspectives, only one of which is visible at any given moment. Each perspective has its own viewers  302  and editors  300  that are arranged (tiled, stacked, or detached) for presentation on the display  206 . 
     FIG. 3  illustrates an overall designer tool structure for designing component applications, illustrated generally by numeral  216 . In the present embodiment, the designer tool (or design tool) is implemented using the Eclipse Platform, or Eclipse. Eclipse is designed to support the construction of a variety of tools for application development. Further, Eclipse supports an unrestricted set of tool providers, including independent software vendors (ISVs) as well as tools for manipulating arbitrary content types (for example HTML, Java, C, JSP, EJB, XML, and GIF). Eclipse supports both GUI and non-GUI-based application development environments. 
   Eclipse&#39;s principal role is to provide tool providers with mechanisms to use, and rules to follow, that lead to seamlessly-integrated tools. These mechanisms are exposed via well-defined API interfaces, classes, and methods. Eclipse also provides useful building blocks and frameworks that facilitate developing new tools. 
   Eclipse comprises a plug-in architecture, wherein a plug-in is the smallest unit that can be developed and delivered separately. Usually a small tool is written as a single plug-in, whereas a complex tool has its functionality split across several plug-ins. Plug-ins are coded in Java and a typical plug-in consists of Java code in a JAR library, some read-only files, and other resources such as images, Web templates, message catalogs, native code libraries, and the like. 
   Each plug-in has a manifest file declaring its interconnections to other plug-ins. In order to define interconnections a plug-in declares any number of named extension points, and any number of extensions to one or more extension points in other plug-ins. Eclipse is a well-known environment, and these and other features are thoroughly described at www.eclipse.org. 
   In the present embodiment, Eclipse is used to enable a developer to design a component application. A component application is an application defined generally by a structured set of components, including data components, message components, presentation components and workflow components. The components are defined using a structured language and executed on a client device by an intelligent runtime container. 
   The data components define data entities that are used by the component application program. Examples of data entities include orders, users, and financial transactions. Data components define what information is required to describe the data entities, and in what format the information is expressed. For example, the data component may define an order comprising a unique identifier for the order, which is formatted as a number; a list of items, which are formatted as strings; the time the order was created, which has a date-time format; the status of the order, which is formatted as a string; and a user who placed the order, which is formatted according to the definition of another one of the data components. Since data elements are usually transferred by message, there is often persistence of data components in a database. Data components may be dynamically generated or defined by the application designer. 
   The message components define the format of messages used by the component application program to communicate with external systems such as the Web service. For example, one of the message components may describe a message for placing an order, which includes a unique identifier for the order, a status of the order, and notes associated with the order. 
   The presentation components define the appearance and behaviour of the component application program as it displayed to a user via a user interface. The presentation components can specify graphical user interface (GUI) screens and controls, and actions to be executed when the user interacts with the component application. For example, the presentation components may define screens, labels, edit boxes, buttons and menus, and actions to be taken when the user types in an edit box or pushes a button. 
   The workflow components of the component application program define processing that occurs when an action is to be performed, such as an action specified by a presentation component as described above, or an action to be performed when messages arrive. Presentation workflow and message processing are defined by the workflow components. The workflow components are written as a series of instructions in either metadata or a programming language or a scripting language. The workflow component supports a correlation between message components and defines application flow as a set of rules for operations on other components. 
   More details regarding component application can be found in Patent Cooperation Treaty Application Numbers PCT/CA2003/001976, PCT/CA2003/001980 and PCT/CA2003/001981, titled “System and Method for Building and Execution of Platform-Neutral Generic Services Client Applications”, “System and Method of Building Wireless Component Applications” and “System and Method of Creating and Communicating with Component Based Wireless Applications”, respectively, which are hereby incorporated by reference. 
   The design tool  216  comprises a user interface (UI) layer  306 , a model layer  312  and a service layer  314 . The UI layer  306  primarily comprises a collection of user modules  301 , including graphical and text editors, viewers and wizards. A large majority of external interactions are accomplished through one or more of these modules, with the developer using a system of drag-and-drop editing and wizard-driven interaction. A secondary, non-user-facing system interface is that of a back-end connector, whereby the design tool  216  can communicate with various back-end servers  106  such as Web services providers and relational databases for example. As described above, the design tool  216  can be built on the Eclipse platform. Accordingly, the user modules  301  are plug-in modules  301  that extend Eclipse classes and utilize the Eclipse framework. 
   The UI layer  306  has access to an extensive widget set and graphics library known as the Standard Widget Toolkit (SWT), for Eclipse. Further, the user modules  301  can utilize a higher-level toolkit called JFace that contains standard viewer classes such as lists, trees and tables and an action framework used to add commands to menus and toolbars. The design tool  216  can also use a Graphical Editing Framework (GEF) to implement diagramming editors. The user modules  301  typically follow the Model-View-Controller design pattern where each user module  301  is both a view and a controller. 
   The data layer  312  includes a design-time model  308  and a runtime model  310  represent the persistent state of the application. The separation of the layers UI layer  306  and the data layer  312  keeps presentation specific information in various views and allows multiple user modules  301  to respond to data model  308 , 310  changes. 
   In the present embodiment, the data models  308 , 310  are based on the Eclipse Modeling Framework (EMF). EMF is a framework and code generation facility. The framework provides model change notification, persistence support and an efficient API for manipulating EMF objects generically. A code generation facility is used to generate the model implementation and create adapters to connect the model layer  312  with the UI layer  306 . 
   The service layer  314  provides services for the UI layer  306  such as validation, localization, generation, build and deployment. The design tool  216  uses Eclipse extension points to load additional plug-ins for two types of services: back-end connectors  316  and device skins  318 . The back-end connectors  316  define extension points for facilitating communication with different back-end server  106 . The device skin  318  defines an extension point for allowing the design tool  216  to emulate different devices  102 . 
   The UI Layer  306  uses a Model-View-Controller (MVC) pattern where each user module  301  can be both a viewer and a controller. As controllers, user modules  301  interact with the model layer  312  models with some related control logic as defined by the MVC pattern. Editors are and viewers are examples of user modules  301  that commit changes to the models immediately upon implementation. Wizards are user modules  301  that are step-driven by a series of one or more dialog interfaces, wherein each dialog interface gathers specific information from a user of the design tool  216 . The wizards  304  apply no changes to the models until confirmation is received, such as selecting a finish button. 
   As viewers, the user modules  301  are observers of the models and are used to interact or otherwise test and modify the models of the application. When the model data changes, the models are notified and respond by updating the presentation of the application. The design-time model  308  is the current version of the application in development and is accessed by users employing the user modules  301  to interact with the associated data of the design-time model  308 . Modules  301  can also trigger validation actions on the design-time model  308 . User modules  301  can also cause some or all of the application to be generated from the design-time model  308 . In general, the design-time model  308  accepts a set of commands that affects the state of the model  308 , and in response may generate a set of events. Each user module  301  includes the set of commands and the events that affect the module  301  and data model  308  pairing. 
   The design-time model  308  represents the state of an application development project and interacts with the user modules  301  by notifying user modules  301  when the state of the design-time model  308  has changed. The design-time model&#39;s  308  primary responsibility is to define an applications, and, accordingly, may include: data component definitions; global variable definitions; message component definitions; resource definitions; screen component definitions; scripts; style definitions. The design-time model  308  responds to commands of each editor and/or viewer. The design-time model  308  also sends events to user modules  301  in response to changes in the design-time model  308 , as well as communicating with the other modules  301  when the design-time model  308  has changed. 
   The following describes the mechanism used by the user modules  301  to interact with the design-time model  308 . The design tool  216  uses the EMF.Edit framework provided by Eclipse and generated code as a bridge  313  between the UI layer  306  and the model layer  312 . Following the Model-View-Controller pattern, the user modules  301  do not know about the design-time model  308  directly but rely on interfaces to provide the information needed to display and edit the data in the design-time model  308 . 
   For example, a tree viewer uses a TreeContentProvider and LabelProvider interface to query the structure of the tree and get text and icons for each node in the tree respectively. Table viewers and list viewers work in a similar way but use the structured ContentProvider and LabelProvider interfaces. 
   Each class in the design-time model  308  is a change notifier. That is, anytime an attribute or reference is changed, an event is triggered. In EMF a notification observer is called an adapter because not only does it observe state changes, but it can also extend the behaviour of the class to which it is attached by supporting additional interfaces. An adapter is attached to a model object by an adapter factory. An adapter factory is asked to adapt an object with an extension of a particular type. The adapter factory is responsible for creating the adapter or returning an existing one, the model object does not know about adapting itself. 
   The design tool  216  uses EMF to generate a set of adapters for the data model  308  called item providers. Each item provider is an adapter that implements provider interfaces to extend the behaviour of the model object so it can be viewed and edited. At the same time is a notification observer that can pass on state changes to listening views. The design tool  216  connects the user modules  301  to the design-time model  308  by configuring them with one or more EMF.Edit classes. Each EMF.Edit class supports an Eclipse UI-provider interface. The EMF.Edit class implements an interface call by delegating an interface call to an adapter factory. The adapter factory then returns a generated adapter that knows how to access the design-time model  308 . When the state of the design-time model  308  changes, the same adapters are used to update the user modules. 
   The following commands are example commands that can affect related modules  301  of the UI layer  306 : ComponentAdded—a component has been added to the application; ComponentRemoved—a component has been removed from the application; ComponentRenamed—a component has been renamed; NavigationControlChanged—a button or menu item has been added, been removed or had its properties changed on a screen of the application; DataBindingChanged—a data-bound control has been added, been removed or had its properties changed on a screen; ScreenParameterListChanged—a parameter has been added or removed from one of the screen components; FieldMappingChanged—a message-level, field-level or prototype mapping has changed; MessageContainmentChanged—a containment relationship has changed; MessageFieldChanged—a message field has been added, been removed or had its properties changed for a message and/or a screen component; DataFieldChanged—a data field has been added, been removed or had its properties changed from a message, data and/or screen component; NavigationChanged—a script that may contain navigation code has changed of a workflow component; LocalizedStringChanged—a literal string has been added, been removed or changed; and ExitCodeChanged—Exit code has been added or removed from a script of the workflow component. 
   Referring to  FIG. 4 , the distribution of user modules  301  as Eclipse plug-ins is shown. User modules  301  fall broadly into two categories: Text Editors  400 , which implement standard line-based editing functionality; and Graphical Editing Framework (GEF) Editors  401  that provide an edit space in which to draw objects. A GEF Editor  401  in the context of the design tool  216  can contain a palette and a canvas, as is known in the art. The user can drop nodes (entities) from the palette onto the canvas and add connections to define relationships therebetween, so as to define the content and inter-relationships of the components of the application. It will be recognized that the user modules  301  are used to create and modify definitions contained in the components as well as to create and modify the interdependencies therebetween. Further, it will be recognized that the user modules  301  can be a combination of text-based and/or graphical-based modules  301 , as desired. 
   As previously described, the user modules  301  are not directly aware of the design-time model  308 . Generally, the user module  301  creates a command to change the design-time model  308  so that the change can be undone through an undo API (not shown). The user module  301  can be configured with an EMF core object called an editing domain that maintains a command stack. The editing domain uses the adapter factory to find an adapter that can create the command. The generated adapter class (ItemProvider) creates the command. The user module  301  executes the command by using the command stack. Further, because the ItemProvider is a notification observer it is notified when the design-time model  308  changes. The ItemProvider in turn notifies a corresponding provider. The provider instructs the user module  301  to refresh after a change notification. 
   The script editor is a constrained text editor for providing relationships between application components. Typically, this information is provided as part of the workflow component. Some commands, such as creating functions, can be restricted such that they are not user-definable in the component application. Accordingly, when a function is created, the events generated by the script editor are fixed. Other commands, such as SavesSript for example, may be edited by the script editor  406 . SaveScript is used when the user saves a script of the application. In the present embodiment, SaveScript triggers the design-time model  308  events NavigationChanged, LocalizedStringChanged and ExitCodeChanged, if successful. 
   Further, the script editor can react to events. For example, ComponentRemoved indicates whether a removed component affects input parameters to the script or globals used by the script. If the removed component affects the script, the script editor prompts the user of the design tool  216  that the script is invalid. 
   A sample interface of the script editor extends the org.eclipse.ui.editors extension point of the Eclipse framework by implementing a subclass of the org.eclipse.ui.editors.texteditors hierarchy. The design tool  216  coordinates the creation and/or modification of scripts in the components as well as the inter-relation of the script affecting other associated components of the application. 
   The screen editor  408  facilitates creation and modification of the structured definition language code in the screen components associated with display of data on the device  102 . UI controls for inclusion in the screen components can be dropped onto a form canvas in the editor. Control properties, including event handlers, can be edited by the screen editor  408 . 
   Sample commands that can be edited by the screen editor  408  include the following commands. ButtonChange is sent to the design-time model  308  when the developer changes a button control. This command triggers NavigationControlChanged of the design-time model  308  if successful. MenultemChange is sent when the developer changes a menu item. This command triggers NavigationControlChanged of the design-time model  308  if successful. ChangeScript is sent when the developer changes a script. This command triggers NavigationControlChanged of the design-time model  308  if successful. QueryMessages is sent when the developer needs a list of available messages that the screen of the application may send or refresh, and returns a list of available messages. QueryData is sent when the developer needs a list of available data objects to bind controls to, and returns a list of available data. NonNavigationControlChange is sent when a control that does not affect navigation has been modified. DataBindingChange is sent when a data binding has changed. This command triggers DataBindingChanged and ScreenParameterListChanged of the data model  308  if successful. 
   Sample input events to the screen editor  408  include the following. An event ComponentRemoved informs the screen editor that a component to which a screen component refers has been removed. An event ComponentRenamed is similar to ComponentRemoved. An event ScreenParameterListChanged modifies the screen component if a parameter used has been modified. The screen component either adjusts that parameter or warns the developer that those dependencies are no longer valid and must be changed. An event MessageFieldChanged checks to see if a field in question is used by the screen component. An event DataFieldChanged checks to see if any controls bound to the field(s) have changed and warns the developer accordingly. 
   A sample interface of the screen editor  408  extends org.eclipse.ui.editors of the Eclipse framework using the GEF GraphicalEditor and/or a VE editor. The design tool  216  coordinates the creation and/or modification of screen definitions in the screen components as well as the inter-relation of the screen definitions affecting other associated components of the application. 
   The data editor  410  facilitates creation and modification of the structured definition language code in the data components of the application by providing the developer the ability to edit data component fields and properties. New data objects can be created from scratch, by prototyping existing data objects or based on data definition mappings to message objects in message components. 
   Sample commands editable by the data editor  410  include the following. AddRemoveFields is sent when the developer adds or removes a field from a data object definition. This command triggers DataFieldChanged of the data model  308  if successful. LinkToExternalData is sent when the developer links a data object definition to an external data object, such as a Calendar or Contacts data object for example. This command triggers DataFieldChanged of the data model  308  if successful. 
   Sample input events to the data editor  410  include the following. An event ComponentRemoved checks to see if a removed object was related to a message through prototyping or containment. The developer can then adjust the fields contained in the data object affected. An event ComponentRenamed is similar to ComponentRemoved. 
   A sample interface of the screen editor  408  extends org.eclipse.ui.editors using the GEF GraphicalEditor. The design tool  216  coordinates the creation and/or modification of data definitions in the data components as well as the inter-relation of the data definitions and associated screen/message definitions affecting other associated components of the application. 
   The message editor  412  facilitates creation and modification the structured definition language code in the message components of the application. The message designer allows a developer to create and edit message components for sending messages to and receiving messages from back-end servers  108 . These messages can include both request/response pairs as well as subscribe/notify/unsubscribe notification messages. Message definitions can be created by prototyping existing messages or by templates based on back-end services of the back-end servers  106 . Further, the message editor provides the ability to select a reliability level for the message. The reliability level defines how the message is to be handled at the device  102  and the application gateway  106 , including delivery, acknowledgement and persistence. The message reliability can be set by an appropriate UI input mechanism such as a drop down menu or radio button selection. The message reliability can be set on a per message or per application level. 
   Sample commands that can be edited by the message editor  412  include AddRemoveFields, which is sent when a field is added to or remove from a message in a message component. Sample input events to the message editor  412  include the following. An event ComponentRemoved checks to see if a component that referenced the message definition has been removed. An event ComponentRenamed is similar to ComponentRemoved. An event FieldMappingChanged checks to see if a field mapping effects the message definitions being edited. 
   A sample interface of the screen editor  408  extends org.eclipse.ui.editors using the GEF GraphicalEditor. The design tool  216  coordinates the creation and/or modification of message definitions in the message components as well as the inter-relation of the created/modified message affecting other associated components of the application. 
   The workflow editor  402  facilitates creating and modifying the command code in the workflow components of the application. The workflow editor  402  defines the screen-to-screen transitions that form the core of the visual part of the component application. Screens and transitions between screens due to user/script events are rendered visually. 
   Sample commands that can be edited by the workflow editor  402  include the following. QueryScreens is sent when the developer wants a list of screens to select from, such as when adding a new screen to the workflow. QueryScripts is sent when the developer wants a list of scripts to call on a screen navigation event. QueryArrivingMessages is sent when the developer wants a list of response messages (including notifications) on which to key screen transitions. AddComponent is sent when the developer wants to add a new screen, message or script to the workflow that doesn&#39;t already exist in the workflow. This command triggers ComponentAdded of the data model  308  if successful. ChangeNavigation is sent when the developer adds a new navigation to the workflow. This command triggers NavigationChanged of the design-time model  308  if successful. 
   Sample input events to the workflow editor  402  include the following. An event ComponentRemoved checks to see if a removed component is a workflow object. The Workflow updates itself by deleting all relationships with this object definition. An event ComponentRenamed checks to see if a renamed component is a workflow object. The workflow updates its view with the new name of the component. An event NavigationControlChanged checks to see if the workflow needs to update its view of the navigation node based on a control change. If, for example, a button has been added to a screen in the workflow, then the view is updated to show the availability of a new navigation node on that screen. An event ScreenParameterListChanged checks to see if a screen&#39;s parameter list has changed and if the screen is in the workflow. The view of any navigation node involving that screen is updated. An event NavigationChanged checks to see if a possible navigation change has occurred. The change is parsed and any necessary updates are made to the view. An event ExitCodeChanged checks to see if an exit point has been added/removed. The editor view is updated to reflect this visually. 
   A sample interface of the screen editor  408  extends org.eclipse.ui.editors using the GEF GraphicalEditor. 
   The message editor  404  facilitates creating and modifying the structured definition language code in the inter-related message and data components of the application. The message/data relationship editor creates and edits relationships between message components and data components. These mappings effect how a data component is populated on message arrival at the device  102  when running the application. For example, data object definitions common between data and message components can exist such that the data object definitions are resident in the data component, while a data mapping definition links the message component to the data object definition in the data component is resident in the message component, or vice versa. A similar configuration can be employed for data object definitions common between screen and data components, whereby the data object definition is resident in one of the components and the data mapping definition is resident in the other associated component. 
   Sample commands that can be edited by the editor  404  include the following. AddComponent is sent when a new data or message is added to the relationship diagram with the effect of also adding that component to the application being developed. This command triggers ComponentAdded of the design-time model  308  if successful. QueryMessages is sent when the developer needs a list of Messages to map. QueryData is sent when the developer needs a list of data to map. ChangeMessageLevelMapping is sent when the developer changes a message-level mapping. This command triggers FieldMappingChanged of the data model  308  if successful. ChangeFieldLevelMapping is sent when the developer changes a field-level mapping. This command triggers FieldMappingChanged of the data model  308  if successful. ChangePrototype is sent when the developer changes a prototype relationship between data objects. This command triggers FieldMappingChanged of the data model  308  if successful. ChangeContainment is sent when the developer changes a containment relationship between data objects. This command triggers MessageContainmentChanged of the data model  308  if successful. 
   Sample input events to the editor  404  include the following. An event ComponentRemoved checks to see if the object removed was a message or data. The relationship mapper deletes any relationships involving the removed object. An event ComponentRenamed checks to see if the renamed object is involved in any mapping relationships. The visual representation of the mapped object is updated with the new name. An event MessageFieldChanged checks to see if the message involved is present in the relationship editor. The field change is then reflected in the visual representation of the message. If the field in question is involved in a mapping, then changes are reflected and the developer may need to be warned of broken mappings if applicable. An event DataFieldChanged is similar to MessageFieldChanged except using data instead of messages. 
   An sample interface of the editor  404  extends org.eclipse.ui.editors using the GEF GraphicalEditor. The design tool  216  coordinates the creation and/or modification of message/data definitions in the message/data components as well as the inter-relation of the created/modified message/data definitions affecting other associated components of the application. 
   The localization editor  414  allows the developer to collect all strings that will be visible to the application end-user (of the device  100 ) and edit them in one place. The editor  414  also allows the developer to create multiple resource mappings for each string into different languages. A sample command that can be edited by the editor  414  includes ChangeLocalizeString, which is sent when the developer adds, deletes or modifies a localized string. A sample input event to the editor  414  includes an event LocalizedStringChanged, which is used to determine when a string literal has been changed in-the script editor or a label has changed in the screen editor  408 . The localization editor  414  can extend the org.eclipse.ui.editors interface by extending an EditorPart. 
   The back-end visualizer editor  416  shows the developer the relationships between message components and the back-end servers that drive the components. The editor  416  also allows the developer to add new back-end servers to the list of those supported by the application in development. In addition to interaction with the design-time data model  308 , as is described for other modules  301  using commands and events received, the Back-end Visualizer editor  416  collaborates with the back-end connector. The back-end connector  316  allows the visualizer to request a ServicesInterface from a registry of known service types. A list of services of this type is returned that can queried by name or by iteration. 
   Sample commands that can be edited by the editor  416  include the following. AddComponent is sent when the developer adds a new message. This command triggers ComponentAdded of the data model  308  if successful. SpecifyMapping is sent when the developer connects a message to a selected back-end server  108 . 
   Sample input events to the editor  416  include the following. An event ComponentRemoved checks to see if the component is a message. The back-end visualizer adjusts its mappings for that message. An event ComponentRenamed is similar to ComponentRemoved. An event MessageFieldChanged validates the message field against what exists on the back-end server  108  and notifies the developer visually of any broken mappings. Back-end servers  108  are accessed through direct calls to the service layers. Optionally, background processing may be used to keep network processing from blocking UI threads. The Editor  416  can extend the org.eclipse.ui.editors using the GEF GraphicalEditor. 
   A methodology and a tool for automatically discovering different data source connectors  316  (i.e., one for databases, one for Web services, etc.) in a generic way will now be described.  FIG. 5  shows an example of a data source detection system  500  for detecting registered data source connectors  316 , in accordance with an embodiment of the present patent disclosure. Typically, one connector  316  is developed for each data source type, that is, one database connector, one Web service connector, etc. The data source information is represented as a WSDL-like model. 
   The data source detection system  500  comprises a generic data source connector  502  for connecting to multiple and diverse data source connectors  316 , a data source connectors repository  504  for storing the location (e.g., URL) of one or more data sources  106 , and a data source model (or structure)  506  for representing information contained in data sources  106 . The connectors  316  to these objects are dynamically retrieved by introspecting the data source connectors repository  504 . The generic data source connector  502  includes an extension point  508  (a named marker) for defining possible extensibility for implementing data source connectors  316  and providing these particular connectors  316  (Web services connector, database connector, etc.) with a criterion to be retrieved by the data source detection system  500  through dynamic introspection (or dynamic discovery) of the data source connectors repository  504 , and one or more generic interfaces  510  for defining the “contract” for data source connectors  316 . “Contract” means a common interface provided by the generic data source connector  502 , which every data source connector  316  a particular type of data source  106  (e.g., Web services, databases, etc.) is bound to observe/implement. 
   This data source detection system  500  can generate the mobile application model based on the discovered data source schema. A common WSDL-like model (or data source model  506 ) is used for internally representing any data source information. Based on this common model of a data source  106 , the data source detection system  500  generates a mobile application model. A transformation to the serialized model of the mobile application will produce mapping information for the Application Gateway and application definition for the device  100 . 
   Instead of developing data source-specific access logic in the design tool  216 , various data source connectors  316  can be developed either by the creator of the wireless application or by a third party. Preferably, these connectors  316  implement a given generic interface, and the design tool  216  discovers the existing connectors in an Eclipse repository. After discovery, the selected data source connector  316  is used subsequently for retrieving the data from the data source  106  represented as a common WSDL-like model  506  for building the model of the wireless application. The discovery tool (in one embodiment a data source detection system  500 ) is integrated in the design tool  216 , but the specific connectors do not have to be part of the design tool  216 ; they can reside as different plug-ins (e.g., but not limited to Eclipse plug-ins), in a common plug-in architecture. For example, in one embodiment of a design tool  216 , a database connector and a Web service connector can be different plug-ins (both included in the design tool  216 , but external to the plug-in representing a data source detection system  500 ). Preferably, these connectors are included as components. 
     FIG. 6  shows an example of the discovery of data source connectors  316  (plug-ins) environment  600 , in accordance with the embodiment of the data source detection system  500 . The environment  600  comprises data sources  106  (i.e., database, Web service, data source M, data source N), the data source connectors  316 , and the design tool  216 . The design tool  216  comprises the data source detection system  500  and the data source model  506 . The design tool  216  reads the data source model  506  and generates the wireless application model  602 . The data source detection system  500  uses the generic data source connector  502  for introspecting the data source connectors repository  504  and reading the data source information represented by the data source model  506 . 
   The connectors for various data sources  106  (e.g., databases, Web services, etc.) can be developed by wireless application developers, by data source providers or by third parties. Those connectors  316  are built as plug-ins (e.g., Eclipse plug-ins, but other platforms can be used as well), deployed in a plug-in repository so that the design tool  216  can automatically detect them. Preferably, one plug-in per data source type will be developed (i.e., one database connector, one Web service connector, etc.). 
   Preferably, the plug-ins observe the following rules:
         1. A generic data source connector  316  is built and deployed. This generic connector  316  provides the “contract”  510  for all data source specific connectors  316 .   2. The generic connector plug-in  502  defines an extension point  508  (in one embodiment of an implementation: “backends”—see schema for the generic connector below).   3. The generic connector  502  exposes two interfaces  510 , which are implemented by any of the specific data source connectors  316 . An example of the description of these interfaces is provided below.   4. The specific data source connectors  316  extend the extension points  508  defined by the generic connector  502 .   5. The URL of the data source  106  (i.e., database, Web service, etc.) is a common property defined in the generic connector  502 .   6. The specific data source connectors  316  define in their implementation additional properties (e.g., credentials and other specific data source properties).   7. The generic connector  502  and the specific data source connectors  316  are deployed as plug-ins in a repository (e.g., Eclipse plug-in repository) accessible to the design tool  216  through dynamic discovery. “Dynamic Discovery” means the introspection of the data source connectors repository  504  by the data source detection system  500  for retrieving the information about a specific data source represented by the data source model  506 .   8. The information contained in any data source  106  is represented in a common WSDL-like model  506  (see the example of a WSDL-like model schema described below).       

   Examples of the interfaces  510  (“the contract”) defined by the generic data source connector include:
         11 . The interface IConnectorInfo defines the URL of the data source  106 . This is a common property to all the data source types.   12 . The interface IConnector defines the common WSDL-like model  506  (with the root named DocumentRoot in the model&#39;s schema) and an IConnectorInfo set of common data source properties.       

   Preferably data source-specific connectors  316  implement the two above interfaces  510  (contracts) and can define their specific properties by adding these properties in their implementation of the IConnectorInfo interface (in one embodiment, implemented as a JavaBean containing the URL as a common property and a set of additional properties). These data source-specific properties are discovered automatically by the design tool  216  through introspection. An example of a schema for the generic connector  316  is presented below. This example schema is based on the specifications of Eclipse Plugin Development Environment (PDE). Other schemas may be created using different PDE specifications. 
   
     
       
         
             
           
             
                 
             
           
          
             
               &lt;?xml version=‘1.0’ encoding=‘UTF-8’?&gt; 
             
             
               &lt;!-- Schema file written by PDE --&gt; 
             
             
               &lt;schema 
             
             
               targetNamespace=“net.rim.wica.tools.studio.datasource.connector 
             
             
               ”&gt; 
             
             
               &lt;annotation&gt; 
             
             
                 &lt;appInfo&gt; 
             
             
                  &lt;meta.schema 
             
             
               plugin=“net.rim.wica.tools.studio.datasource.connector” 
             
             
               id=“backends” name=“backends”/&gt; 
             
             
                 &lt;/appInfo&gt; 
             
             
                 &lt;documentation&gt; 
             
             
                  [Enter description of this extension point.] 
             
             
                 &lt;/documentation&gt; 
             
             
                &lt;/annotation&gt; 
             
             
                &lt;element name=“extension”&gt; 
             
             
                 &lt;complexType&gt; 
             
             
                  &lt;sequence&gt; 
             
             
                   &lt;element    ref=“backend”    minOccurs=“0” 
             
             
               maxOccurs=“10”/&gt; 
             
             
                  &lt;/sequence&gt; 
             
             
                  &lt;attribute name=“point” type=“string” use=“required”&gt; 
             
             
                   &lt;annotation&gt; 
             
             
                    &lt;documentation&gt; 
             
             
                    &lt;/documentation&gt; 
             
             
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                  &lt;attribute name=“id” type=“string”&gt; 
             
             
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                    &lt;documentation&gt; 
             
             
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                  &lt;/attribute&gt; 
             
             
                  &lt;attribute name=“name” type=“string”&gt; 
             
             
                   &lt;annotation&gt; 
             
             
                    &lt;documentation&gt; 
             
             
                    &lt;/documentation&gt; 
             
             
                   &lt;/annotation&gt; 
             
             
                  &lt;/attribute&gt; 
             
             
                 &lt;/complexType&gt; 
             
             
                &lt;/element&gt; 
             
             
                &lt;element name=“backend”&gt; 
             
             
                 &lt;complexType&gt; 
             
             
                  &lt;attribute name=“id” type=“string”&gt; 
             
             
                   &lt;annotation&gt; 
             
             
                    &lt;documentation&gt; 
             
             
                    &lt;/documentation&gt; 
             
             
                   &lt;/annotation&gt; 
             
             
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                  &lt;attribute    name=“description”    type=“string” 
             
             
               use=“required”&gt; 
             
             
                   &lt;annotation&gt; 
             
             
                    &lt;documentation&gt; 
             
             
                    &lt;/documentation&gt; 
             
             
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                  &lt;attribute name=“class” type=“string”&gt; 
             
             
                   &lt;annotation&gt; 
             
             
                    &lt;documentation&gt; 
             
             
                    &lt;/documentation&gt; 
             
             
                    &lt;appInfo&gt; 
             
             
                     &lt;meta.attribute        kind=“java” 
             
             
               basedOn=“net.rim.wica.tools.studio.datasource.connector.IConnector”/&gt; 
             
             
                    &lt;/appInfo&gt; 
             
             
                   &lt;/annotation&gt; 
             
             
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                  &lt;attribute name=“backendType”&gt; 
             
             
                   &lt;annotation&gt; 
             
             
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                   &lt;simpleType&gt; 
             
             
                    &lt;restriction base=“string”&gt; 
             
             
                     &lt;enumeration value=“webservice”&gt; 
             
             
                     &lt;/enumeration&gt; 
             
             
                     &lt;enumeration value=“database”&gt; 
             
             
                     &lt;/enumeration&gt; 
             
             
                     &lt;enumeration value=“corba”&gt; 
             
             
                     &lt;/enumeration&gt; 
             
             
                     &lt;enumeration value=“legacy”&gt; 
             
             
                     &lt;/enumeration&gt; 
             
             
                    &lt;/restriction&gt; 
             
             
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                  &lt;meta.section type=“since”/&gt; 
             
             
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                 &lt;documentation&gt; 
             
             
                  [Enter the first release in which this extension 
             
             
               point appears.] 
             
             
                 &lt;/documentation&gt; 
             
             
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                  [Enter extension point usage example here.] 
             
             
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                  &lt;meta.section type=“apiInfo”/&gt; 
             
             
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                  [Enter API information here.] 
             
             
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                  &lt;meta.section type=“implementation”/&gt; 
             
             
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                 &lt;documentation&gt; 
             
             
                  [Enter information about supplied implementation of 
             
             
               this extension point.] 
             
             
                 &lt;/documentation&gt; 
             
             
                &lt;/annotation&gt; 
             
             
                &lt;annotation&gt; 
             
             
                 &lt;appInfo&gt; 
             
             
                  &lt;meta.section type=“copyright”/&gt; 
             
             
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                 &lt;documentation&gt; 
             
             
                 &lt;/documentation&gt; 
             
             
                &lt;/annotation&gt; 
             
             
               &lt;/schema&gt; 
             
             
                 
             
          
         
       
     
   
   The design tool  216  discovers the registered plug-ins-data source connectors  316  and, upon a user&#39;s choice, connects to that particular data source  316  and builds up the WSDL-like model  506  of the data source  106 . This process is depicted in the logical schema shown in  FIG. 7 .  FIG. 7  shows in a flowchart an example of a method of data source detection ( 700 ), in accordance with an embodiment of the data source detection system  500 . The method ( 700 ) begins with reading the plug-in registry (or repository  504 ) ( 702 ) and locating plug-in extending “backends” extension points ( 704 ). Preferably, for performances reasons, the design tool  216  caches the discovered plugins ( 706 ). The design tool  216  shows the discovered connectors  316  ( 708 ) and prompts the user to choose from a specific data source type  106  (e.g., databases, Web services, etc), upon the discovered connectors  316 . The design tool  216  builds the WSDL-like model  506  of the data source  106  ( 710 ). This model is used for building up the wireless application model  602 . 
   A common model  506  is used for representing various data sources  106 . This model  506  represents in a WSDL-like structure the data source information discovered by the data source detection system  500  in order to create the wireless application model  602 . Preferably, the Web services are natively represented by this model  506 , but any other data source  106  (e.g., databases, CORBA applications, etc.) can be modeled by this WSDL-like structure, by using annotation for describing data source specific information. An example of the WSDL-like model  506  schema is presented below. 
   
     
       
         
             
           
             
                 
             
           
          
             
               &lt;?xml version=“1.0” encoding=“UTF-8”?&gt; 
             
             
               &lt;xsd:schema    xmlns:xsd=“http://www.w3.org/2001/XMLSchema” 
             
             
               xmlns:wsdl=“http://schemas.xmlsoap.org/wsdl/” 
             
             
               targetNamespace=“http://schemas.xmlsoap.org/wsdl/”&gt; 
             
             
               &lt;xsd:simpleType name=“MsgTypes”&gt; 
             
             
               &lt;xsd:restriction base=“xsd:NCName”&gt; 
             
             
               &lt;xsd:enumeration value=“none”/&gt; 
             
             
               &lt;xsd:enumeration value=“input”/&gt; 
             
             
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               &lt;xsd:enumeration value=“header”/&gt; 
             
             
               &lt;xsd:enumeration value=“input_header”/&gt; 
             
             
               &lt;xsd:enumeration value=“output_header”/&gt; 
             
             
               &lt;xsd:enumeration value=“fault”/&gt; 
             
             
               &lt;/xsd:restriction&gt; 
             
             
               &lt;/xsd:simpleType&gt; 
             
             
               &lt;xsd:complexType name=“DocumentRoot”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“unbounded” name=“mixed” 
             
             
               nillable=“true” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“arrayType” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“required” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“DocumentRoot” type=“wsdl:DocumentRoot”/&gt; 
             
             
               &lt;xsd:complexType name=“TBinding”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element    minOccurs=“0”    maxOccurs=“unbounded” 
             
             
               name=“operation” type=“wsdl:TBindingOperation”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“type” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TBinding” type=“wsdl:TBinding”/&gt; 
             
             
               &lt;xsd:complexType name=“TBindingOperation”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“1”  name=“input” 
             
             
               type=“wsdl:TBindingOperationMessage”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“1”  name=“output” 
             
             
               type=“wsdl:TBindingOperationMessage”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“unbounded” name=“fault” 
             
             
               type=“wsdl:TBindingOperationFault”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element        name=“TBindingOperation” 
             
             
               type=“wsdl:TBindingOperation”/&gt; 
             
             
               &lt;xsd:complexType name=“TBindingOperationFault”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element        name=“TBindingOperationFault” 
             
             
               type=“wsdl:TBindingOperationFault”/&gt; 
             
             
               &lt;xsd:complexType name=“TBindingOperationMessage”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element        name=“TBindingOperationMessage” 
             
             
               type=“wsdl:TBindingOperationMessage”/&gt; 
             
             
               &lt;xsd:complexType name=“TDefinitions”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“unbounded” name=“group” 
             
             
               nillable=“true” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“targetNamespace” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TDefinitions” type=“wsdl:TDefinitions”/&gt; 
             
             
               &lt;xsd:complexType name=“TDocumentation”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“unbounded” name=“mixed” 
             
             
               nillable=“true” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element        name=“TDocumentation” 
             
             
               type=“wsdl:TDocumentation”/&gt; 
             
             
               &lt;xsd:complexType name=“TDocumented”&gt; 
             
             
               &lt;xsd:annotation&gt; 
             
             
               &lt;xsd:documentation&gt; 
             
             
                 This type is extended by component types to allow them 
             
             
               to be documented 
             
             
                 &lt;/xsd:documentation&gt; 
             
             
               &lt;/xsd:annotation&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“1” name=“documentation” 
             
             
               type=“wsdl:TDocumentation”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TDocumented” type=“wsdl:TDocumented”&gt; 
             
             
               &lt;xsd:annotation&gt; 
             
             
               &lt;xsd:documentation&gt; 
             
             
                 This type is extended by component types to allow them 
             
             
               to be documented 
             
             
                 &lt;/xsd:documentation&gt; 
             
             
               &lt;/xsd:annotation&gt; 
             
             
               &lt;/xsd:element&gt; 
             
             
               &lt;xsd:complexType name=“TExtensibilityElement”&gt; 
             
             
               &lt;xsd:attribute name=“required” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:complexType name=“TExtensibleAttributesDocumented”&gt; 
             
             
               &lt;xsd:annotation&gt; 
             
             
               &lt;xsd:documentation&gt; 
             
             
                   This type is extended by component types to allow 
             
             
               attributes from other namespaces to be added. 
             
             
                   &lt;/xsd:documentation&gt; 
             
             
               &lt;/xsd:annotation&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element    minOccurs=“0”    maxOccurs=“unbounded” 
             
             
               name=“anyAttribute” nillable=“true” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:complexType name=“TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:annotation&gt; 
             
             
               &lt;xsd:documentation&gt; 
             
             
                   This type is extended by component types to allow 
             
             
               elements from other namespaces to be added. 
             
             
                   &lt;/xsd:documentation&gt; 
             
             
               &lt;/xsd:annotation&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“unbounded” name=“any” 
             
             
               nillable=“true” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:complexType name=“TFault”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleAttributesDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“message” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TFault” type=“wsdl:TFault”/&gt; 
             
             
               &lt;xsd:complexType name=“TImport”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleAttributesDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“location” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“namespace” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TImport” type=“wsdl:TImport”/&gt; 
             
             
               &lt;xsd:complexType name=“TMessage”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“unbounded” name=“part” 
             
             
               type=“wsdl:TPart”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TMessage” type=“wsdl:TMessage”/&gt; 
             
             
               &lt;xsd:complexType name=“TOperation”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“1”  name=“input” 
             
             
               type=“wsdl:TParam”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“1”  name=“output” 
             
             
               type=“wsdl:TParam”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“unbounded”  name=“fault” 
             
             
               type=“wsdl:TFault”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“1”  name=“output1” 
             
             
               type=“wsdl:TParam”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“1”  name=“input1” 
             
             
               type=“wsdl:TParam”/&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“unbounded”  name=“fault1” 
             
             
               type=“wsdl:TFault”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“parameterOrder” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TOperation” type=“wsdl:TOperation”/&gt; 
             
             
               &lt;xsd:complexType name=“TParam”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleAttributesDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“message” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TParam” type=“wsdl:TParam”/&gt; 
             
             
               &lt;xsd:complexType name=“TPart”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleAttributesDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“element” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“type” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TPart” type=“wsdl:TPart”/&gt; 
             
             
               &lt;xsd:complexType name=“TPort”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:attribute name=“binding” type=“xsd:string”/&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TPort” type=“wsdl:TPort”/&gt; 
             
             
               &lt;xsd:complexType name=“TPortType”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleAttributesDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element  minOccurs=“0”  maxOccurs=“unbounded” 
             
             
               name=“operation” type=“wsdl:TOperation”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TPortType” type=“wsdl:TPortType”/&gt; 
             
             
               &lt;xsd:complexType name=“TService”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”&gt; 
             
             
               &lt;xsd:sequence&gt; 
             
             
               &lt;xsd:element minOccurs=“0” maxOccurs=“unbounded” name=“port” 
             
             
               type=“wsdl:TPort”/&gt; 
             
             
               &lt;/xsd:sequence&gt; 
             
             
               &lt;xsd:attribute name=“name” type=“xsd:string”/&gt; 
             
             
               &lt;/xsd:extension&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TService” type=“wsdl:TService”/&gt; 
             
             
               &lt;xsd:complexType name=“TTypes”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TExtensibleDocumented”/&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“TTypes” type=“wsdl:TTypes”/&gt; 
             
             
               &lt;xsd:complexType name=“HParam”&gt; 
             
             
               &lt;xsd:complexContent&gt; 
             
             
               &lt;xsd:extension base=“wsdl:TParam”/&gt; 
             
             
               &lt;/xsd:complexContent&gt; 
             
             
               &lt;/xsd:complexType&gt; 
             
             
               &lt;xsd:element name=“HParam” type=“wsdl:HParam”/&gt; 
             
             
               &lt;/xsd:schema&gt; 
             
             
                 
             
          
         
       
     
   
   The data source detection system and methods according to the present patent disclosure may be implemented by any hardware, software or a combination of hardware and software having the above described functions. The software code, either in its entirety or a part thereof, may be stored in a computer-readable memory. Further, a computer data signal representing the software code which may be embedded in a carrier wave may be transmitted via a communication network. Such a computer-readable memory and a computer data signal are also within the scope of the present patent disclosure, as well as the hardware, software and the combination thereof. 
   While particular embodiments of the present patent disclosure have been shown and described, changes and modifications may be made to such embodiments without departing from the true scope of the patent disclosure.