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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 public class DelegatingLoader extends DefiningLoader {
     18     private DefiningLoader defining_loader;
     19 
     20     public DelegatingLoader(ClassLoader parent, DefiningLoader defining_loader) {
     21         super(parent);
     22         this.defining_loader = defining_loader;
     23     }
     24 
     25     public void resetDefiningLoader(DefiningLoader defining_loader) {
     26         this.defining_loader = defining_loader;
     27     }
     28 
     29     protected Class<?> findClass(String name) throws ClassNotFoundException
     30     {
     31         if (name.equals("Test")) {
     32             throw new Error("Unexpected DelegatingLoader.findClass(\"Test\")");
     33         }
     34         return super.findClass(name);
     35     }
     36 
     37     protected Class<?> loadClass(String name, boolean resolve)
     38         throws ClassNotFoundException
     39     {
     40         if (name.equals("Test")) {
     41             return defining_loader.loadClass(name, resolve);
     42         }
     43         return super.loadClass(name, resolve);
     44     }
     45 }
     46