import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void onNodeExpand(NodeExpandEvent event) {
	final org.primefaces.model.TreeNode parentNode = event.getTreeNode();
	final Object data = parentNode.getData();
	if (data instanceof TagBean) {
		parentNode.getChildren().clear();
		TagBean tagBean = (TagBean) data;
		Tag tag = tagBean.getTag();
		Collection<Tag> children = tag.getChildren();
		for (Tag c : children) {
			final int index = Tag.getIndexOf(c.getId(), tags);
			final org.primefaces.model.TreeNode cn =
					new org.primefaces.model.DefaultTreeNode(tagBeans.get(index), parentNode);
			if (c.getChildren().isEmpty() == false) {
				// If it has children, just insert a dummy child node for users to expand the tree;
    			// The actual children will be inserted at runtime with Ajax
    			new org.primefaces.model.DefaultTreeNode(null, cn);
			}
		}
	}
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void onNodeExpand(NodeExpandEvent event) {
	TreeNode treeNode = event.getTreeNode();
	if (treeNode != null) {
		Iterator<TreeNode> it = treeNode.getChildren().iterator();
		while (it.hasNext()) {
			it.next().setParent(null);
		}
		treeNode.getChildren().clear();
		loadFileFolderTree(treeNode, out, this.module, this.entityId, ((FileFolderVO) treeNode.getData()).getFolderPath(), null, createSFVO(), 1, true);
	}
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void onNodeExpand(NodeExpandEvent event) {
    JobNodeBean jnb = (JobNodeBean) event.getTreeNode().getData();
    String id = jnb.getId();
    nodeMap.get(id).setExpanded(true);
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void onNodeExpand( NodeExpandEvent event )
{
    String node = event.getTreeNode().getData().toString();
    LOGGER.info( "Expanded:" + node );
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void onNodeExpand(NodeExpandEvent event) {
	doSomething();
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void onNodeExpand(NodeExpandEvent event) {
	FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Expanded", event.getTreeNode().toString());

	FacesContext.getCurrentInstance().addMessage(null, message);
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
public void expandNode(NodeExpandEvent evt) {
    ((DynamicTreeNode)evt.getTreeNode()).expand();
}
 

import org.primefaces.event.NodeExpandEvent; //导入依赖的package包/类
/**
 *
 *
 * @param event
 */
public void onNodeExpand(NodeExpandEvent event) {
  // ...
}