业务继承桥接实现

customBridge.js

// ub-ria/mvc/List.js
List.prototype.imp = null;

/**
 * @params {er/Action} imp 
 */
List.prototype.setImp = function (imp) {
    this.imp = imp; 
}


// A/List.js 继承 A/common/List.js
List.prototype.doCustomBehavior = function () { /*xxx*/ };



// B/List.js 继承 B/common/List.js
var AList = require('A/List');
List.prototype.doCustomBehavior = function () {
    return this.imp.doCustomBehavior();
};

List.prototype.initBehavior = function () {
    this.$super(arguments);
    this.setImp(new AList());
};