Program: 77406
Project: 77406
Buggy source:
protected void handleDrop(){
  boolean isScalarparameter=false;
  boolean isResultSetColumn=false;
  boolean isEmbeddImage=false;
  final Object template=TemplateTransfer.getInstance().getTemplate();
  Assert.isNotNull(template);
  Assert.isTrue(handleValidateDrag(template));
  updateTargetRequest();
  updateTargetEditPart();
  AbstractToolHandleExtends preHandle=null;
  String transName=null;
  if (template instanceof String) {
    transName=TRANS_LABEL_CREATE_ELEMENT;
    preHandle=BasePaletteFactory.getAbstractToolHandleExtendsFromPaletteName(template);
  }
 else   if (handleValidateInsert(template)) {
    transName=InsertInLayoutAction.DISPLAY_TEXT;
    Object objectType=getFactory(template).getObjectType();
    if (objectType instanceof DataSetHandle) {
      preHandle=new DataSetToolExtends();
    }
 else     if (objectType instanceof DataSetItemModel) {
      preHandle=new DataSetColumnToolExtends();
    }
 else     if (objectType instanceof ResultSetColumnHandle) {
      isResultSetColumn=true;
      preHandle=new DataSetColumnToolExtends();
    }
 else     if (objectType instanceof ScalarParameterHandle) {
      isScalarparameter=true;
      preHandle=new ParameterToolExtends();
    }
  }
 else   if (handleValidateLibrary(template)) {
    Object dragObj=getSingleTransferData(template);
    if (dragObj instanceof EmbeddedImageHandle) {
      DNDUtil.copyHandles(dragObj,getTargetEditPart().getModel());
      isEmbeddImage=true;
      preHandle=new ImageToolExtends();
    }
 else     preHandle=new LibraryElementsToolHandleExtends((DesignElementHandle)dragObj);
  }
 else   if (handleValidateOutline(template)) {
    Object dragObj=getSingleTransferData(template);
    if (dragObj instanceof EmbeddedImageHandle) {
      isEmbeddImage=true;
      preHandle=new ImageToolExtends();
    }
  }
  if (preHandle != null) {
    SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().startTrans(transName);
    preHandle.setRequest(this.getCreateRequest());
    preHandle.setTargetEditPart(getTargetEditPart());
    Command command=this.getCommand();
    if (command != null && command.canExecute()) {
      if (!(preHandle.preHandleMouseUp())) {
        SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().rollback();
        return;
      }
    }
    boolean isTheme=checkTheme(preHandle,getSingleTransferData(template));
    if (isTheme) {
      SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().commit();
    }
 else {
      super.handleDrop();
      if (!preHandle.postHandleCreation()) {
        SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().rollback();
        return;
      }
      SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().commit();
      if (isScalarparameter || isResultSetColumn) {
        Request request=new Request(ReportRequest.CREATE_SCALARPARAMETER_OR_RESULTSETCOLUMN);
        selectAddedObject(request);
      }
 else       if (isEmbeddImage) {
        Object dragObj=getSingleTransferData(template);
        final Object model=getCreateRequest().getExtendedData().get(DesignerConstants.KEY_NEWOBJECT);
        try {
          ((ImageHandle)model).setImageName(((EmbeddedImageHandle)dragObj).getName());
        }
 catch (        SemanticException e) {
          ExceptionHandler.handle(e);
        }
        CommandStack stack=SessionHandleAdapter.getInstance().getCommandStack();
        stack.startTrans(IMG_TRANS_MSG);
        stack.commit();
      }
 else       selectAddedObject();
    }
  }
}

Fixed version (ground truth):
protected void handleDrop(){
  boolean isScalarparameter=false;
  boolean isResultSetColumn=false;
  boolean isEmbeddImage=false;
  final Object template=TemplateTransfer.getInstance().getTemplate();
  Assert.isNotNull(template);
  Assert.isTrue(handleValidateDrag(template));
  updateTargetRequest();
  updateTargetEditPart();
  AbstractToolHandleExtends preHandle=null;
  String transName=null;
  if (template instanceof String) {
    transName=TRANS_LABEL_CREATE_ELEMENT;
    preHandle=BasePaletteFactory.getAbstractToolHandleExtendsFromPaletteName(template);
  }
 else   if (handleValidateInsert(template)) {
    transName=InsertInLayoutAction.DISPLAY_TEXT;
    Object objectType=getFactory(template).getObjectType();
    if (objectType instanceof DataSetHandle) {
      preHandle=new DataSetToolExtends();
    }
 else     if (objectType instanceof DataSetItemModel) {
      preHandle=new DataSetColumnToolExtends();
    }
 else     if (objectType instanceof ResultSetColumnHandle) {
      isResultSetColumn=true;
      preHandle=new DataSetColumnToolExtends();
    }
 else     if (objectType instanceof ScalarParameterHandle) {
      isScalarparameter=true;
      preHandle=new ParameterToolExtends();
    }
  }
 else   if (handleValidateLibrary(template)) {
    Object dragObj=getSingleTransferData(template);
    if (dragObj instanceof EmbeddedImageHandle) {
      ModuleHandle moduleHandle=SessionHandleAdapter.getInstance().getReportDesignHandle();
      LibraryHandle library=(LibraryHandle)((EmbeddedImageHandle)dragObj).getElementHandle().getRoot();
      try {
        if (UIUtil.includeLibrary(moduleHandle,library)) {
          EmbeddedImage image=StructureFactory.newEmbeddedImageFrom((EmbeddedImageHandle)dragObj,moduleHandle);
          DNDUtil.addEmbeddedImageHandle(getTargetEditPart().getModel(),image);
        }
      }
 catch (      Exception e) {
        ExceptionHandler.handle(e);
      }
      isEmbeddImage=true;
      preHandle=new ImageToolExtends();
    }
 else     preHandle=new LibraryElementsToolHandleExtends((DesignElementHandle)dragObj);
  }
 else   if (handleValidateOutline(template)) {
    Object dragObj=getSingleTransferData(template);
    if (dragObj instanceof EmbeddedImageHandle) {
      isEmbeddImage=true;
      preHandle=new ImageToolExtends();
    }
  }
  if (preHandle != null) {
    SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().startTrans(transName);
    preHandle.setRequest(this.getCreateRequest());
    preHandle.setTargetEditPart(getTargetEditPart());
    Command command=this.getCommand();
    if (command != null && command.canExecute()) {
      if (!(preHandle.preHandleMouseUp())) {
        SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().rollback();
        return;
      }
    }
    boolean isTheme=checkTheme(preHandle,getSingleTransferData(template));
    if (isTheme) {
      SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().commit();
    }
 else {
      super.handleDrop();
      if (!preHandle.postHandleCreation()) {
        SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().rollback();
        return;
      }
      SessionHandleAdapter.getInstance().getReportDesignHandle().getCommandStack().commit();
      if (isScalarparameter || isResultSetColumn) {
        Request request=new Request(ReportRequest.CREATE_SCALARPARAMETER_OR_RESULTSETCOLUMN);
        selectAddedObject(request);
      }
 else       if (isEmbeddImage) {
        Object dragObj=getSingleTransferData(template);
        final Object model=getCreateRequest().getExtendedData().get(DesignerConstants.KEY_NEWOBJECT);
        try {
          ((ImageHandle)model).setImageName(((EmbeddedImageHandle)dragObj).getName());
        }
 catch (        SemanticException e) {
          ExceptionHandler.handle(e);
        }
        CommandStack stack=SessionHandleAdapter.getInstance().getCommandStack();
        stack.startTrans(IMG_TRANS_MSG);
        stack.commit();
      }
 else       selectAddedObject();
    }
  }
}