Program: 118365
Project: 118365
Buggy source:
@Override public ExecutionResult execute(Item item){
  ProcessType processType=getProcessType(item);
  if (getProject().getLanguage() != ECodeLanguage.JAVA || processType == null) {
    return ExecutionResult.NOTHING_TO_DO;
  }
  String[] componentsName=new String[]{"String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str"};
  IComponentConversion changeJDBCDriverJarType=new IComponentConversion(){
    public void transform(    NodeType node){
      ElementParameterType elemParamType=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      String propertiesString=elemParamType.getValue();
      Deserialized<ComponentProperties> fromSerialized=PropertiesImpl.fromSerialized(propertiesString,ComponentProperties.class,new Properties.PostSerializationSetup<ComponentProperties>(){
        @Override public void setup(        ComponentProperties properties){
          properties.setValueEvaluator(new PropertyValueEvaluator(){
            @Override public Object evaluate(            Property property,            Object storedValue){
              if (storedValue instanceof String) {
                if (GenericTypeUtils.isEnumType(property)) {
                  ComponentProperties newProperties=ComponentsUtils.getComponentProperties(node.getComponentName());
                  Property newProperty=(Property)newProperties.getProperty(property.getName());
                  if (newProperty == null) {
                    newProperty=(Property)newProperties.getProperty("String_Node_Str");
                  }
                  if (newProperty != null) {
                    List<?> propertyPossibleValues=((Property<?>)newProperty).getPossibleValues();
                    if (propertyPossibleValues != null) {
                      for (                      Object possibleValue : propertyPossibleValues) {
                        if (possibleValue.toString().equals(storedValue)) {
                          property.setStoredValue(possibleValue);
                          return possibleValue;
                        }
                      }
                    }
                  }
                }
              }
              return storedValue;
            }
          }
);
        }
      }
);
      ComponentProperties newProperties=ComponentsUtils.getComponentProperties(node.getComponentName());
      updateSubProperties(fromSerialized.properties,newProperties);
      newProperties.copyValuesFrom(fromSerialized.properties,true,false);
      NamedThing nt=newProperties.getProperty("String_Node_Str");
      if (nt != null && nt instanceof Property) {
        Property moduleNameProperty=(Property)nt;
        String moduleName=(String)moduleNameProperty.getValue();
        moduleName=TalendQuoteUtils.removeQuotes(moduleName);
        moduleName=TalendQuoteUtils.addQuotes(moduleName);
        moduleNameProperty.setStoredValue(moduleName);
      }
      nt=newProperties.getProperty("String_Node_Str");
      if (nt != null && nt instanceof Property) {
        Property moduleNameProperty=(Property)nt;
        if (moduleNameProperty.getPossibleValues() == null || moduleNameProperty.getPossibleValues().isEmpty()) {
          List<String> columns=new ArrayList<String>();
          if (moduleNameProperty.getValue() instanceof String) {
            String column=(String)moduleNameProperty.getValue();
            columns.add(column);
          }
 else           if (moduleNameProperty.getValue() instanceof List) {
            columns.addAll((Collection<? extends String>)moduleNameProperty.getValue());
          }
          moduleNameProperty.setPossibleValues(columns);
        }
      }
      elemParamType.setValue(newProperties.toSerialized());
    }
  }
;
  boolean modified=false;
  for (  Object obj : processType.getNode()) {
    if (obj != null && obj instanceof NodeType) {
      String componentName=((NodeType)obj).getComponentName();
      if (ArrayUtils.contains(componentsName,componentName)) {
        IComponentFilter filter=new NameComponentFilter(componentName);
        modified=ModifyComponentsAction.searchAndModify((NodeType)obj,filter,Arrays.<IComponentConversion>asList(changeJDBCDriverJarType)) || modified;
      }
    }
  }
  if (modified) {
    try {
      ProxyRepositoryFactory.getInstance().save(item,true);
      return ExecutionResult.SUCCESS_NO_ALERT;
    }
 catch (    PersistenceException e) {
      ExceptionHandler.process(e);
      return ExecutionResult.FAILURE;
    }
  }
  return ExecutionResult.SUCCESS_WITH_ALERT;
}

Fixed version (ground truth):
@Override public ExecutionResult execute(Item item){
  ProcessType processType=getProcessType(item);
  if (getProject().getLanguage() != ECodeLanguage.JAVA || processType == null) {
    return ExecutionResult.NOTHING_TO_DO;
  }
  String[] componentsName=new String[]{"String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str","String_Node_Str"};
  IComponentConversion changeJDBCDriverJarType=new IComponentConversion(){
    public void transform(    NodeType node){
      ElementParameterType elemParamType=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      String propertiesString=elemParamType.getValue();
      SerializerDeserializer.Deserialized<ComponentProperties> fromSerialized=Properties.Helper.fromSerializedPersistent(propertiesString,ComponentProperties.class,new PostDeserializeSetup(){
        @Override public void setup(        Object properties){
          ((Properties)properties).setValueEvaluator(new PropertyValueEvaluator(){
            @Override public Object evaluate(            Property property,            Object storedValue){
              if (storedValue instanceof String) {
                if (GenericTypeUtils.isEnumType(property)) {
                  ComponentProperties newProperties=ComponentsUtils.getComponentProperties(node.getComponentName());
                  Property newProperty=(Property)newProperties.getProperty(property.getName());
                  if (newProperty == null) {
                    newProperty=(Property)newProperties.getProperty("String_Node_Str");
                  }
                  if (newProperty != null) {
                    List<?> propertyPossibleValues=((Property<?>)newProperty).getPossibleValues();
                    if (propertyPossibleValues != null) {
                      for (                      Object possibleValue : propertyPossibleValues) {
                        if (possibleValue.toString().equals(storedValue)) {
                          property.setStoredValue(possibleValue);
                          return possibleValue;
                        }
                      }
                    }
                  }
                }
              }
              return storedValue;
            }
          }
);
        }
      }
);
      ComponentProperties newProperties=ComponentsUtils.getComponentProperties(node.getComponentName());
      updateSubProperties(fromSerialized.object,newProperties);
      newProperties.copyValuesFrom(fromSerialized.object,true,false);
      NamedThing nt=newProperties.getProperty("String_Node_Str");
      if (nt != null && nt instanceof Property) {
        Property moduleNameProperty=(Property)nt;
        String moduleName=(String)moduleNameProperty.getValue();
        moduleName=TalendQuoteUtils.removeQuotes(moduleName);
        moduleName=TalendQuoteUtils.addQuotes(moduleName);
        moduleNameProperty.setStoredValue(moduleName);
      }
      nt=newProperties.getProperty("String_Node_Str");
      if (nt != null && nt instanceof Property) {
        Property moduleNameProperty=(Property)nt;
        if (moduleNameProperty.getPossibleValues() == null || moduleNameProperty.getPossibleValues().isEmpty()) {
          List<String> columns=new ArrayList<String>();
          if (moduleNameProperty.getValue() instanceof String) {
            String column=(String)moduleNameProperty.getValue();
            columns.add(column);
          }
 else           if (moduleNameProperty.getValue() instanceof List) {
            columns.addAll((Collection<? extends String>)moduleNameProperty.getValue());
          }
          moduleNameProperty.setPossibleValues(columns);
        }
      }
      elemParamType.setValue(newProperties.toSerialized());
    }
  }
;
  boolean modified=false;
  for (  Object obj : processType.getNode()) {
    if (obj != null && obj instanceof NodeType) {
      String componentName=((NodeType)obj).getComponentName();
      if (ArrayUtils.contains(componentsName,componentName)) {
        IComponentFilter filter=new NameComponentFilter(componentName);
        modified=ModifyComponentsAction.searchAndModify((NodeType)obj,filter,Arrays.<IComponentConversion>asList(changeJDBCDriverJarType)) || modified;
      }
    }
  }
  if (modified) {
    try {
      ProxyRepositoryFactory.getInstance().save(item,true);
      return ExecutionResult.SUCCESS_NO_ALERT;
    }
 catch (    PersistenceException e) {
      ExceptionHandler.process(e);
      return ExecutionResult.FAILURE;
    }
  }
  return ExecutionResult.SUCCESS_WITH_ALERT;
}