import org.eclipse.e4.core.commands.ECommandService; //导入依赖的package包/类
@PostConstruct
public Control createContents(Composite parent, NLPService nlpService, ECommandService commandService, EHandlerService handlerService) {
	l = new Label(parent, SWT.None);
	int size = 0;
	updateSize(nlpService);
	Button b = new Button(parent, SWT.PUSH);
	b.setImage(TermSuiteUI.getImg(TermSuiteUI.IMG_CLEAR_CO).createImage());
	b.setSize(50, -1);
	b.setToolTipText("Clear all preprocessed corpus save in cache");
	b.addSelectionListener(new SelectionAdapter() {
		@Override
		public void widgetSelected(SelectionEvent e) {
			Command command = commandService.getCommand(TermSuiteUI.COMMAND_CLEAR_CACHE_ID);
		    ParameterizedCommand pCmd = new ParameterizedCommand(command, null);
		    if (handlerService.canExecute(pCmd)) 
		    	handlerService.executeHandler(pCmd);
		}
	});
	return parent;
}
 

import org.eclipse.e4.core.commands.ECommandService; //导入依赖的package包/类
@Execute
public void execute(EPartService partService, 
		@Named(IServiceConstants.ACTIVE_SHELL) Shell shell,
		EModelService modelService,
		ResourceService resourceService,
		ECommandService commandService,
		EHandlerService handlerService,

		IEclipseContext context,
		MApplication mApplication) {
	
	NewPipelineDialog dialog = new NewPipelineDialog(shell, resourceService);
	if(dialog.open() == Dialog.OK) {
		
		String filename = dialog.getFilename();
		EPipeline pipeline;
		try {
			pipeline = resourceService.createPipeline(filename);
			ParameterizedCommand command = commandService.createCommand(
					OpenObjectHandler.COMMAND_ID, 
					CommandUtil.params(OpenObjectHandler.PARAM_INPUT_OBJECT_ID, resourceService.getResourceId(pipeline)));
			if(handlerService.canExecute(command))
				handlerService.executeHandler(command);

		} catch (IOException e) {
			MessageDialog.openError(shell, "Filename error", e.getMessage());
		}
	}
	
}
 

import org.eclipse.e4.core.commands.ECommandService; //导入依赖的package包/类
BindingRestoreHelper(final String inContextId,
        final ECommandService inCommandService, final Logger inLog) {
	bindings = new ArrayList<MKeyBinding>();
	contextId = inContextId;
	commandService = inCommandService;
	log = inLog;
}
 

import org.eclipse.e4.core.commands.ECommandService; //导入依赖的package包/类
@Inject
public CommandExecutor(ECommandService commandService, EHandlerService handlerService) {
	this.commandService = commandService;
	this.handlerService = handlerService;
}