Program: 118750
Project: 118750
Buggy source:
@Override public void handleEvent(Event event){
  String lockTopic=Constant.REPOSITORY_ITEM_EVENT_PREFIX + Constant.ITEM_LOCK_EVENT_SUFFIX;
  if (lockTopic.equals(event.getTopic())) {
    if (!isEditable) {
      Object o=event.getProperty(Constant.ITEM_EVENT_PROPERTY_KEY);
      if (o instanceof FileItem) {
        item.getProperty().eAdapters().remove(dirtyListener);
        item=(FileItem)o;
        item.getProperty().eAdapters().add(dirtyListener);
        if (isEditable()) {
          isEditable=true;
          rEditorInput.getFile().setReadOnly(false);
          getSite().getShell().getDisplay().asyncExec(new Runnable(){
            @Override public void run(){
              setFocus();
              ISourceViewer viewer=getViewer();
              if (viewer != null) {
                StyledText styledText=viewer.getTextWidget();
                if (styledText != null) {
                  styledText.setBackground(bgColorForEditabeItem);
                  styledText.setDragDetect(true);
                }
              }
            }
          }
);
          try {
            ICodeGeneratorService service=(ICodeGeneratorService)GlobalServiceRegister.getDefault().getService(ICodeGeneratorService.class);
            if (o instanceof RoutineItem) {
              ITalendSynchronizer routineSynchronizer=service.createJavaRoutineSynchronizer();
              routineSynchronizer.syncRoutine((RoutineItem)o,true);
            }
 else             if (o instanceof SQLPatternItem) {
              ISQLPatternSynchronizer sqlPatternSynchronizer=service.getSQLPatternSynchronizer();
              sqlPatternSynchronizer.syncSQLPattern((SQLPatternItem)o,true);
            }
 else {
              org.talend.commons.exception.ExceptionHandler.process(new Exception("String_Node_Str"));
            }
            setName();
          }
 catch (          Exception e) {
            org.talend.commons.exception.ExceptionHandler.process(e);
          }
        }
      }
    }
  }
}

Fixed version (ground truth):
@Override public void handleEvent(Event event){
  String lockTopic=Constant.REPOSITORY_ITEM_EVENT_PREFIX + Constant.ITEM_LOCK_EVENT_SUFFIX;
  if (lockTopic.equals(event.getTopic())) {
    if (!isEditable) {
      Object o=event.getProperty(Constant.ITEM_EVENT_PROPERTY_KEY);
      if (o instanceof FileItem) {
        boolean isTheCorrectEditor=false;
        Property property=((FileItem)o).getProperty();
        if (property != null) {
          String eventItemId=property.getId();
          String currentOpenedItemId="String_Node_Str";
          if (rEditorInput != null) {
            currentOpenedItemId=rEditorInput.getId();
          }
          isTheCorrectEditor=currentOpenedItemId.equals(eventItemId);
        }
        if (!isTheCorrectEditor) {
          return;
        }
        item.getProperty().eAdapters().remove(dirtyListener);
        item=(FileItem)o;
        item.getProperty().eAdapters().add(dirtyListener);
        if (isEditable()) {
          isEditable=true;
          rEditorInput.getFile().setReadOnly(false);
          getSite().getShell().getDisplay().asyncExec(new Runnable(){
            @Override public void run(){
              setFocus();
              ISourceViewer viewer=getViewer();
              if (viewer != null) {
                StyledText styledText=viewer.getTextWidget();
                if (styledText != null) {
                  styledText.setBackground(bgColorForEditabeItem);
                  styledText.setDragDetect(true);
                }
              }
            }
          }
);
          try {
            ICodeGeneratorService service=(ICodeGeneratorService)GlobalServiceRegister.getDefault().getService(ICodeGeneratorService.class);
            if (o instanceof RoutineItem) {
              ITalendSynchronizer routineSynchronizer=service.createJavaRoutineSynchronizer();
              routineSynchronizer.syncRoutine((RoutineItem)o,true);
            }
 else             if (o instanceof SQLPatternItem) {
              ISQLPatternSynchronizer sqlPatternSynchronizer=service.getSQLPatternSynchronizer();
              sqlPatternSynchronizer.syncSQLPattern((SQLPatternItem)o,true);
            }
 else {
              org.talend.commons.exception.ExceptionHandler.process(new Exception("String_Node_Str"));
            }
            setName();
          }
 catch (          Exception e) {
            org.talend.commons.exception.ExceptionHandler.process(e);
          }
        }
      }
    }
  }
}