有没有一种方法，以继承和覆盖方法是在自定义命名空间？ [英] Is there a way to subclass and override a method that is in a custom namespace?

问题描述

说我有一类与公众相比其他命名空间中定义的方法，保护或内部...

Say I have a class with a method defined in a namespace other than public, protected or internal...

package com.foo.bar
{
   import com.foo.my_name_space
   public class bar
   {
    private var _vabc:String
    private var _v123:String

    protected function set123(val:String):void{
        _v123 = val;
    }

    my_name_space function setABC(val:String):void{
        _vabc = val;
    }

   }
}

现在我想在子类中扩展和覆盖此...

Now I want to extend and override this in a subclass...

package com.foo
{
   import com.foo.bar.bar
   import com.foo.my_name_space

   public class foo extends bar
   {
      override protected function set123(val:String):void{
        super.set123(val);
      }

       .... ????? ...

   }
 }

很容易来覆盖保护，公众等方法，但有没有办法覆盖的名字空间中定义的setABC方法* my_name_space *？

Easy enough to override protected, public etc. methods, but is there a way to override the setABC method defined in the name space *my_name_space* ?

我试过下面的语法，这似乎传递FlashBuilder pre-编译器检查，但无法正常工作。

I've tried the following syntax, which seems to pass the FlashBuilder pre-compiler check but doesn't work.

    use namespace my_name_space override function my_name_space::setABC(val:String):void

我已经尝试了一些其他的语法组合，但大多数人甚至不通过pre-编译检查。 （多用某种类型的命名空间的错误）我有一种感觉，这是不可能的，但不知道是否有人可能有什么想法？

I've tried a number of other syntax combinations but most wouldn't even pass the pre-compile check. (many with some type of namespace error) I have a feeling this isn't possible but wonder if anyone might have any ideas?

推荐答案

詹姆斯的答案是正确的。你只是没有适当地添加使用空间指令。此示例按预期的方式：

James' answer is right. You just failed to add the use namespace directive appropriately. This example works as expected:

package {
    import flash.display.Sprite;
    import flash.events.Event;
    import test.Base;
    import test.Child;
    import test.my_namespace;

    public class Main extends Sprite {

        use namespace my_namespace;

        public function Main():void {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }

        private function init(e:Event = null):void {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            // entry point

            var base:Base = new Base();
            base.test();

            var child:Child = new Child();
            child.test();
        }

    }

}

package test {
    import test.my_namespace;
    use namespace my_namespace;

    public class Base {

        my_namespace function test():void {
            trace("Base");
        }

    }

}

package test {
    import test.Base;
    import test.my_namespace;
    use namespace my_namespace;

    public class Child extends Base {

        public function Child() {

        }

        override my_namespace function test():void {
            trace("Child");
            super.my_namespace::test();
        }
    }

}

package test {
    public namespace my_namespece;
}

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