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enumeration Colour(black(): Colour, white(): Colour, red(): Colour) class Person(name: String, age: Integer, getName(): String, birthday(), setAge(newAge:int): Integer) class Vehicle(colour: Colour) class Car() class Bike() association Person 'owner 1' -- 'fleet *' Vehicle: ownership association Car --|> Vehicle association Bike --|> Vehicle
If setAge(. . . ) is called with a non-negative argument then the argument becomes the new value of the attribute age
context Person::setAge(newAge:int) pre: newAge >= 0 post: self.age = newAge
enumeration Colour(black(): Colour, white(): Colour, red(): Colour) class Person(name: String, age: Integer, getName(): String, birthday(), setAge(newAge:int): Integer) class Vehicle(colour: Colour) class Car() class Bike() association Person 'owner 1' -- 'fleet *' Vehicle: ownership association Car --|> Vehicle association Bike --|> Vehicle
Calling birthday() increments the age of a person by 1
context Person::birthday() post: self.age = self.age@pre + 1
enumeration Colour(black(): Colour, white(): Colour, red(): Colour) class Person(name: String, age: Integer, getName(): String, birthday(), setAge(newAge:int): Integer) class Vehicle(colour: Colour) class Car() class Bike() association Person 'owner 1' -- 'fleet *' Vehicle: ownership association Car --|> Vehicle association Bike --|> Vehicle
Calling getName() delivers the value of the attribute name
context Person::getName() post: result = name
class HealthRecord(createMedicalInfo(description: String): HealthRecord, updateMedicalInfo(description: String): HealthRecord, createPrescription(info: MedicalInfo, prescription: Prescription): HealthRecord, deletePrescription(prescription: Prescription): HealthRecord, readMedicalInfo(MedicalInfo: OclVoid), readPrescription(): Prescription) class Prescription(drug: String, amount: Integer, creator: Doctor) class MedicalInfo(description: String, creator: Doctor, open: Boolean) class Patient(name: String) class Doctor() class Pharmacist() association HealthRecord 'record 1' -- 'owner 1' Patient association HealthRecord 'record 1' -- 'prescription *' Prescription association HealthRecord 'record 1' -- 'medicalinfo *' MedicalInfo association Prescription 'prescription *' -- 'medicalinfo 1' MedicalInfo association Patient 'treats *' <|-- 'treatedBy *' Doctor association Patient 'treats *' <|-- Pharmacist
You can only add a prescription if you have previously created the corresponding MedicalInfo
context HealthRecord::createMedicalInfo(p:MedicalInfo,prescription:Prescription):HealthRecord pre perm1: p.creator = environment.caller
class HealthRecord(createMedicalInfo(description: String): HealthRecord, updateMedicalInfo(description: String): HealthRecord, createPrescription(info: MedicalInfo, prescription: Prescription): HealthRecord, deletePrescription(prescription: Prescription): HealthRecord, readMedicalInfo(MedicalInfo: OclVoid), readPrescription(): Prescription) class Prescription(drug: String, amount: Integer, creator: Doctor) class MedicalInfo(description: String, creator: Doctor, open: Boolean) class Patient(name: String) class Doctor() class Pharmacist() association HealthRecord 'record 1' -- 'owner 1' Patient association HealthRecord 'record 1' -- 'prescription *' Prescription association HealthRecord 'record 1' -- 'medicalinfo *' MedicalInfo association Prescription 'prescription *' -- 'medicalinfo 1' MedicalInfo association Patient 'treats *' <|-- 'treatedBy *' Doctor association Patient 'treats *' <|-- Pharmacist
To create a MedicalInfo about a patient you need to be one of its doctors
context HealthRecord::createMedicalInfo(description:String):HealthRecord post perm2: self.owner.treatedBy.oclAsType(OclAny) ->includes (environment.caller.oclAsType(OclAny))
class HealthRecord(createMedicalInfo(description: String): HealthRecord, updateMedicalInfo(description: String): HealthRecord, createPrescription(info: MedicalInfo, prescription: Prescription): HealthRecord, deletePrescription(prescription: Prescription): HealthRecord, readMedicalInfo(MedicalInfo: OclVoid), readPrescription(): Prescription) class Prescription(drug: String, amount: Integer, creator: Doctor) class MedicalInfo(description: String, creator: Doctor, open: Boolean) class Patient(name: String) class Doctor() class Pharmacist() association HealthRecord 'record 1' -- 'owner 1' Patient association HealthRecord 'record 1' -- 'prescription *' Prescription association HealthRecord 'record 1' -- 'medicalinfo *' MedicalInfo association Prescription 'prescription *' -- 'medicalinfo 1' MedicalInfo association Patient 'treats *' <|-- 'treatedBy *' Doctor association Patient 'treats *' <|-- Pharmacist
To create a MedicalInfo, you need to be a doctor (not necessarily the one of the patient)
context HealthRecord::createMedicalInfo(description:String):HealthRecord pre perm3: environment.caller.role = 'Doctor'
class HealthRecord(createMedicalInfo(description: String): HealthRecord, updateMedicalInfo(description: String): HealthRecord, createPrescription(info: MedicalInfo, prescription: Prescription): HealthRecord, deletePrescription(prescription: Prescription): HealthRecord, readMedicalInfo(MedicalInfo: OclVoid), readPrescription(): Prescription) class Prescription(drug: String, amount: Integer, creator: Doctor) class MedicalInfo(description: String, creator: Doctor, open: Boolean) class Patient(name: String) class Doctor() class Pharmacist() association HealthRecord 'record 1' -- 'owner 1' Patient association HealthRecord 'record 1' -- 'prescription *' Prescription association HealthRecord 'record 1' -- 'medicalinfo *' MedicalInfo association Prescription 'prescription *' -- 'medicalinfo 1' MedicalInfo association Patient 'treats *' <|-- 'treatedBy *' Doctor association Patient 'treats *' <|-- Pharmacist
The amount of a prescription must not be too large
context Prescription inv AmountNotTooLarge: self.amount < 1000
class HealthRecord(createMedicalInfo(description: String): HealthRecord, updateMedicalInfo(description: String): HealthRecord, createPrescription(info: MedicalInfo, prescription: Prescription): HealthRecord, deletePrescription(prescription: Prescription): HealthRecord, readMedicalInfo(MedicalInfo: OclVoid), readPrescription(): Prescription) class Prescription(drug: String, amount: Integer, creator: Doctor) class MedicalInfo(description: String, creator: Doctor, open: Boolean) class Patient(name: String) class Doctor() class Pharmacist() association HealthRecord 'record 1' -- 'owner 1' Patient association HealthRecord 'record 1' -- 'prescription *' Prescription association HealthRecord 'record 1' -- 'medicalinfo *' MedicalInfo association Prescription 'prescription *' -- 'medicalinfo 1' MedicalInfo association Patient 'treats *' <|-- 'treatedBy *' Doctor association Patient 'treats *' <|-- Pharmacist
Closed medical infos can only be read by the doctor which created it
context HealthRecord::readMedicalInfo():MedicalInfo post perm4: resultresult.creator.oclAsType(OclAny) = environment.caller.oclAsType(OclAny)
class Customer(id: Integer, name: String, address: String, active: Boolean, changeService(s: Service): Boolean) class Bill(send_date: Date, paid_date: Date, amount: Real, confirm_payment(): Boolean) class SurfRecord(downloadRate: Integer, setRate(rate: Integer): Integer, getRate(): Integer) class Provider(disableService(): OclVoid, enableService(): OclVoid, disableCustomer(): OclVoid, reenableCustomer(c: Customer): OclVoid, sendBill(): OclVoid) class Service(price: Real, QoS: Integer, freedownload: Integer, provide_service(): Boolean) class Date(today(): Date, durationInDays(d: Date): Integer) class Max1GB() class Max10GB() class Max100GB() association Customer 'customer' -- 'bill' Bill association Customer 'customer' -- 'service' Service association Customer 'customer 1..*' -- 'provider' Provider association Customer 'customer' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'service' Service association SurfRecord 'surfRecord 1..*' -- 'provider' Provider association Provider 'provider' -- 'services 1..*' Service association Service <|-- Max1GB association Service <|-- Max10GB association Service <|-- Max100GB
For the service ``1GB'' the free download variable should be invariant and be set to 1.
context Max1GB inv : self.freedownload = 1024
class Customer(id: Integer, name: String, address: String, active: Boolean, changeService(s: Service): Boolean) class Bill(send_date: Date, paid_date: Date, amount: Real, confirm_payment(): Boolean) class SurfRecord(downloadRate: Integer, setRate(rate: Integer): Integer, getRate(): Integer) class Provider(disableService(): OclVoid, enableService(): OclVoid, disableCustomer(): OclVoid, reenableCustomer(c: Customer): OclVoid, sendBill(): OclVoid) class Service(price: Real, QoS: Integer, freedownload: Integer, provide_service(): Boolean) class Date(today(): Date, durationInDays(d: Date): Integer) class Max1GB() class Max10GB() class Max100GB() association Customer 'customer' -- 'bill' Bill association Customer 'customer' -- 'service' Service association Customer 'customer 1..*' -- 'provider' Provider association Customer 'customer' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'service' Service association SurfRecord 'surfRecord 1..*' -- 'provider' Provider association Provider 'provider' -- 'services 1..*' Service association Service <|-- Max1GB association Service <|-- Max10GB association Service <|-- Max100GB
A customer can only have a service from his service provider
context Provider inv onlyOfferedService: self.services->includesAll(self.customer->collect(c:Customer | c.service)->asSet())
class Customer(id: Integer, name: String, address: String, active: Boolean, changeService(s: Service): Boolean) class Bill(send_date: Date, paid_date: Date, amount: Real, confirm_payment(): Boolean) class SurfRecord(downloadRate: Integer, setRate(rate: Integer): Integer, getRate(): Integer) class Provider(disableService(): OclVoid, enableService(): OclVoid, disableCustomer(): OclVoid, reenableCustomer(c: Customer): OclVoid, sendBill(): OclVoid) class Service(price: Real, QoS: Integer, freedownload: Integer, provide_service(): Boolean) class Date(today(): Date, durationInDays(d: Date): Integer) class Max1GB() class Max10GB() class Max100GB() association Customer 'customer' -- 'bill' Bill association Customer 'customer' -- 'service' Service association Customer 'customer 1..*' -- 'provider' Provider association Customer 'customer' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'service' Service association SurfRecord 'surfRecord 1..*' -- 'provider' Provider association Provider 'provider' -- 'services 1..*' Service association Service <|-- Max1GB association Service <|-- Max10GB association Service <|-- Max100GB
If the download rate of a customer (in Surf-Record) is lower than the freedownload of his service, then the amount_of_money in his bill is equal to the price in the service.
context Bill inv: self.surfRecord.downloadRate <= self.service.freedownload implies self.amount = self.service.price
class Customer(id: Integer, name: String, address: String, active: Boolean, changeService(s: Service): Boolean) class Bill(send_date: Date, paid_date: Date, amount: Real, confirm_payment(): Boolean) class SurfRecord(downloadRate: Integer, setRate(rate: Integer): Integer, getRate(): Integer) class Provider(disableService(): OclVoid, enableService(): OclVoid, disableCustomer(): OclVoid, reenableCustomer(c: Customer): OclVoid, sendBill(): OclVoid) class Service(price: Real, QoS: Integer, freedownload: Integer, provide_service(): Boolean) class Date(today(): Date, durationInDays(d: Date): Integer) class Max1GB() class Max10GB() class Max100GB() association Customer 'customer' -- 'bill' Bill association Customer 'customer' -- 'service' Service association Customer 'customer 1..*' -- 'provider' Provider association Customer 'customer' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'service' Service association SurfRecord 'surfRecord 1..*' -- 'provider' Provider association Provider 'provider' -- 'services 1..*' Service association Service <|-- Max1GB association Service <|-- Max10GB association Service <|-- Max100GB
If the bill has not been paid for 30 days, the customer's flag active will be set to false
context Customer inv: self.bill.send_date.durationInDays(self.bill.paid_date.today()) > 30 and self.bill.send_date.durationInDays(self.bill.paid_date) > 30 implies not self.active
class Customer(id: Integer, name: String, address: String, active: Boolean, changeService(s: Service): Boolean) class Bill(send_date: Date, paid_date: Date, amount: Real, confirm_payment(): Boolean) class SurfRecord(downloadRate: Integer, setRate(rate: Integer): Integer, getRate(): Integer) class Provider(disableService(): OclVoid, enableService(): OclVoid, disableCustomer(): OclVoid, reenableCustomer(c: Customer): OclVoid, sendBill(): OclVoid) class Service(price: Real, QoS: Integer, freedownload: Integer, provide_service(): Boolean) class Date(today(): Date, durationInDays(d: Date): Integer) class Max1GB() class Max10GB() class Max100GB() association Customer 'customer' -- 'bill' Bill association Customer 'customer' -- 'service' Service association Customer 'customer 1..*' -- 'provider' Provider association Customer 'customer' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'service' Service association SurfRecord 'surfRecord 1..*' -- 'provider' Provider association Provider 'provider' -- 'services 1..*' Service association Service <|-- Max1GB association Service <|-- Max10GB association Service <|-- Max100GB
Each customer must have a unique ID.
context Customer inv: self.allInstances()->isUnique(self.id)
class Customer(id: Integer, name: String, address: String, active: Boolean, changeService(s: Service): Boolean) class Bill(send_date: Date, paid_date: Date, amount: Real, confirm_payment(): Boolean) class SurfRecord(downloadRate: Integer, setRate(rate: Integer): Integer, getRate(): Integer) class Provider(disableService(): OclVoid, enableService(): OclVoid, disableCustomer(): OclVoid, reenableCustomer(c: Customer): OclVoid, sendBill(): OclVoid) class Service(price: Real, QoS: Integer, freedownload: Integer, provide_service(): Boolean) class Date(today(): Date, durationInDays(d: Date): Integer) class Max1GB() class Max10GB() class Max100GB() association Customer 'customer' -- 'bill' Bill association Customer 'customer' -- 'service' Service association Customer 'customer 1..*' -- 'provider' Provider association Customer 'customer' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'surfRecord' SurfRecord association Bill 'bill' -- 'service' Service association SurfRecord 'surfRecord 1..*' -- 'provider' Provider association Provider 'provider' -- 'services 1..*' Service association Service <|-- Max1GB association Service <|-- Max10GB association Service <|-- Max100GB
A customer can only view his own downloadrate
context SurfRecord::getRate():Integer pre perm1: environment.caller.oclAsType(oclLib.OclAny) = self.customer.oclAsType(oclLib.OclAny) pre perm1: environment.caller = self.customer