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1   /*
2    * $Id: PlexusUtils.java 471756 2006-11-06 15:01:43Z husted $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  package org.apache.struts2.plexus;
22  
23  import java.io.ByteArrayInputStream;
24  import java.io.InputStream;
25  import java.io.InputStreamReader;
26  
27  import org.apache.commons.logging.Log;
28  import org.apache.commons.logging.LogFactory;
29  import org.codehaus.plexus.PlexusContainer;
30  import org.codehaus.plexus.configuration.PlexusConfigurationResourceException;
31  
32  /***
33   * Utility methods for dealing with Plexus
34   */
35  public class PlexusUtils {
36      private static final Log log = LogFactory.getLog(PlexusObjectFactory.class);
37  
38      /***
39       * Configures the container with the configuration file
40       *
41       * @param pc The plexus container
42       * @param file The file path
43       * @throws PlexusConfigurationResourceException If the plexus configuration can't be loaded
44       */
45      public static void configure(PlexusContainer pc, String file) throws PlexusConfigurationResourceException {
46          InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(file);
47          if (is == null) {
48              log.info("Could not find " + file + ", skipping");
49              is = new ByteArrayInputStream("<plexus><components></components></plexus>".getBytes());
50          }
51          pc.setConfigurationResource(new InputStreamReader(is));
52      }
53  }