/*

 * 克隆一个对象

 */

com.ty.repairtech.JsonOperation.clone = function(obj) {

    // Handle the 3 simple types, and null or undefined

    if (null == obj || "object" != typeof obj)

        return obj;

    // Handle Date

    if ( obj instanceof Date) {

        var copy = new Date();

        copy.setTime(obj.getTime());

        return copy;

    }

    // Handle Array

    if ( obj instanceof Array) {

        var copy = [];

        for (var i = 0, len = obj.length; i < len; ++i) {

            copy[i] = com.ty.repairtech.JsonOperation.clone(obj[i]);

        }

        return copy;

    }

    // Handle Object

    if ( obj instanceof Object) {

        var copy = {};

        for (var attr in obj) {

            if (obj.hasOwnProperty(attr))

                copy[attr] = com.ty.repairtech.JsonOperation.clone(obj[attr]);

        }

        return copy;

    }

    throw new Error("Unable to copy obj! Its type isn't supported.");

}