package com.sinosoft.lz.system.util;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

/**
 * 
 * @author zhangdapeng
 * @version 1.0,2014年5月13日
 * @since 1.0
 */
public class NodeWorker{
	/**
	 * 自身id
	 */
	private String			id;
	/**
	 * 父id
	 */
	private String			pid;
	/**
	 * 节点内容
	 */
	private Object			data;
	/**
	 * 孩子节点列表
	 */
	private ChildrenWorker	children	= new ChildrenWorker();

	public NodeWorker() {
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getPid() {
		return pid;
	}

	public void setPid(String pid) {
		this.pid = pid;
	}

	public Object getData() {
		return data;
	}

	public void setData(Object data) {
		this.data = data;
	}

	// 先序遍历，拼接JSON字符串
	public String toString() {
		Class<? extends Object> clazz = data.getClass();
		Field[] field = clazz.getDeclaredFields();

		String name = null;
		String value = null;
		StringBuilder result = new StringBuilder();
		for (int i = 0; i < field.length; i++) {
			name = field[i].getName();
			value = (String) invokeGet(data, name);
			if (i != 0) {
				result.append(",").append('"' + name + '"' + ":" + '"' + value + '"');

			} else
				result.append("{").append('"' + name + '"' + ":" + '"' + value + '"');
		}

		if (children != null && children.getSize() != 0) {
			result.append(",").append('"').append("c").append('"').append(":")
					.append(children.toString());
		} else {
			// result.append(",").append('"' + "leaf" + '"' + ":" + '"' + "true"
			// + '"');
		}

		return result.append("}").toString();
	}

	/**
	 * java反射bean的get方法
	 * 
	 * @param objectClass
	 * @param fieldName
	 * @return
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public Method getGetMethod(Class objectClass, String fieldName) {
		StringBuffer sb = new StringBuffer();
		sb.append("get");
		sb.append(fieldName.substring(0, 1).toUpperCase());
		sb.append(fieldName.substring(1));
		try {
			return objectClass.getMethod(sb.toString());
		} catch (Exception e) {
		}
		return null;
	}

	/**
	 * 执行get方法
	 * 
	 * @param o
	 *            执行对象
	 * @param fieldName
	 *            属性
	 */
	public Object invokeGet(Object o, String fieldName) {
		Method method = getGetMethod(o.getClass(), fieldName);
		try {
			return method.invoke(o, new Object[0]);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	// 添加孩子节点
	public void addChild(NodeWorker node) {
		this.children.addChild(node);
	}

}