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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   https://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.bcel.util;
20  
21  import java.util.HashMap;
22  import java.util.Map;
23  
24  import org.apache.bcel.classfile.JavaClass;
25  
26  /**
27   * This repository is used in situations where a Class is created outside the realm of a ClassLoader. Classes are loaded
28   * from the file systems using the paths specified in the given class path. By default, this is the value returned by
29   * ClassPath.getClassPath().
30   *
31   * @see org.apache.bcel.Repository
32   */
33  public class ClassPathRepository extends AbstractClassPathRepository {
34  
35      private final Map<String, JavaClass> loadedClasses = new HashMap<>(); // CLASSNAME X JAVACLASS
36  
37      public ClassPathRepository(final ClassPath classPath) {
38          super(classPath);
39      }
40  
41      /**
42       * Clears all entries from cache.
43       */
44      @Override
45      public void clear() {
46          loadedClasses.clear();
47      }
48  
49      /**
50       * Finds an already defined (cached) JavaClass object by name.
51       */
52      @Override
53      public JavaClass findClass(final String className) {
54          return loadedClasses.get(className);
55      }
56  
57      /**
58       * Removes class from repository.
59       */
60      @Override
61      public void removeClass(final JavaClass javaClass) {
62          loadedClasses.remove(javaClass.getClassName());
63      }
64  
65      /**
66       * Stores a new JavaClass instance into this Repository.
67       */
68      @Override
69      public void storeClass(final JavaClass javaClass) {
70          loadedClasses.put(javaClass.getClassName(), javaClass);
71          javaClass.setRepository(this);
72      }
73  }