一个接口多个实现
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?接口的实现部分
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<?xml version="1.0" encoding="UTF-8"?><scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="com.cvicse.usap.framework.views.MyAccordionView"> <implementation name="code"> <scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" name="myVapplication" factory='vaadin.app'> <implementation cardinality="0..n" interface="com.cvicse.usap.framework.myapplication.api.IMyAccordionView" name="com.cvicse.usap.framework.myapplication.api.IMyAccordionView" policy="dynamic" unbind="unbindAccordionTab"/> <reference bind="bindTabsheetTab" cardinality="0..n" interface="com.cvicse.usap.framework.myapplication.api.IMyTabsheetView" name="com.cvicse.usap.framework.myapplication.api.IMyTabsheetView" policy="dynamic" unbind="unbindTabsheetTab"/> </scr:component>
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?? 定义了一个集合
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// 左侧导航菜单内容集合--单例对象--小心使用 public List<IAccordionView> accordionContributions = Collections .synchronizedList(new ArrayList<IAccordionView>());
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?bind="bindAccordionTab" 对应的方法。 bind是指bundle加载时注册用的也就是向集合中增加实现的方法。
?如果有多个实现，该方法会被调用多次。
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/** * 注册左侧Accordion菜单 * * @param accordionView */ public void bindAccordionTab(IAccordionView accordionView) { // 将要绑定的菜单页加入集合中 accordionContributions.add(accordionView); // Component component = accordionView.getView(this); if (initialized) { try { // TODO 从OSGI DS 获取 Component component = accordionView.getView(this); // 判断权限，如果有权限，就增加到导航菜单 if (getSecurity().isPermitted(accordionView.getResourceURI())) { accordionComponentMap.put(accordionView.getResourceURI(), component); doAccordionClick(component); if (null == accordionView.getIconPathType()) { homeScreen.getNavigationAccorion().addTab(component, accordionView.getName(), null); } else if (accordionView.THEME_RESOURCE .equals(accordionView.getIconPathType())) { homeScreen.getNavigationAccorion().addTab(component, accordionView.getName(), new ThemeResource(accordionView.getIconPath())); } else { homeScreen.getNavigationAccorion().addTab( component, accordionView.getName(), new ClassResource(accordionView.getClass(), accordionView.getIconPath(), this)); } } } catch (Exception e) { e.printStackTrace(); } } }??