    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package javax.jdo;
    18
    19  import java.lang.reflect.InvocationHandler;
    20  import java.lang.reflect.Method;
    21  import java.lang.reflect.Proxy;
    22
    23  /**
    24   *
    25   * <p>
    26   */
    27  public class PMFProxy implements InvocationHandler {
    28
    29      private String connectionDriverName;
    30
    31      public static PersistenceManagerFactory newInstance() {
    32          PersistenceManagerFactory pmf =
    33                 (PersistenceManagerFactory) Proxy.newProxyInstance(
    34                  PMFProxy.class.getClassLoader(),
    35                  new Class[]{PersistenceManagerFactory.class},
    36                  new PMFProxy());
    37          return pmf;
    38      }
    39
    40      /*
    41       *
    42       */
    43      public Object invoke(Object proxy, Method m, Object[] args)
    44              throws Exception {
    45          Object result = null;
    46
    47          if (m.getName().equals("getConnectionDriverName")) {
    48              result = connectionDriverName;
    49          } else if (m.getName().equals("setConnectionDriverName")) {
    50              connectionDriverName = (String) args[0];
    51          } else {
    52              throw new Exception(
    53                      "Unexpected invocation of method: " + m);
    54          }
    55          return result;
    56      }
    57  }
    58