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1   /**
2    *
3    * Copyright 2005 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  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  
18  package org.apache.geronimo.common;
19  
20  import java.net.URL;
21  import java.io.IOException;
22  
23  
24  /**
25   * Used to perform common initialization tasks for Geronimo server, deploy, and client environments.
26   * @version $Rev: 356022 $ $Date: 2005-12-11 12:58:34 -0800 (Sun, 11 Dec 2005) $
27   */
28  public class GeronimoEnvironment {
29  
30      /**
31       * Performs common initialization for the various Geronimo process environments: server, deploy, and client.
32       */
33      public static void init() {
34          // Setting useCaches to false avoids a memory leak of URLJarFile instances
35          // It's a workaround for a Sun bug (see bug id 4167874). Otherwise, 
36          // URLJarFiles will never be garbage collected. o.a.g.deployment.util.DeploymentUtil.readAll() 
37          // causes URLJarFiles to be created
38          try {
39              // Protocol/file shouldn't matter. 
40              // As long as we don't get an input/output stream, no operations should occur...
41              new URL("http://a").openConnection().setDefaultUseCaches(false);
42          }
43          catch (IOException ioe) {
44              // Can't Log this. Should we send to STDOUT/STDERR?
45          }
46      }
47  
48  }