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1   /*
2    * Copyright 2004 The Apache Software Foundation
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  package org.apache.pluto.driver.deploy.impl;
17  
18  import java.io.File;
19  import java.io.IOException;
20  import java.io.RandomAccessFile;
21  
22  import org.apache.pluto.driver.deploy.PortalRegistrarService;
23  import org.apache.pluto.descriptors.services.PortletAppDescriptorService;
24  
25  /***
26   * Registrar service which adds the application context to the
27   * registry file.
28   *
29   * @author <a href="ddewolf@apache.org">David H. DeWolf</a>
30   * @version 1.0
31   * @since Mar 11, 2005
32   */
33  public class ContextRegistryRegistrarService implements PortalRegistrarService {
34  
35      public static final String CONTEXT_FILE = "WEB-INF/data/portletcontexts.txt";
36  
37      private File webAppDir;
38  
39      public ContextRegistryRegistrarService(File webAppDir) {
40          this.webAppDir = webAppDir;
41      }
42  
43      public void register(PortletAppDescriptorService service)
44          throws IOException {
45          System.out.println("<VERBOSE> Registering Applicaiton Context");
46          File file = new File(webAppDir, CONTEXT_FILE);
47          RandomAccessFile ras = new RandomAccessFile(file, "rw");
48  
49          long length = ras.length();
50          byte[] contentByte = new byte[(int) length];
51          ras.read(contentByte);
52          String contents = new String(contentByte);
53          long pos = contents.lastIndexOf("/"+service.getContextPath());
54          if(pos > -1) {
55              System.out.println("<VERBOSE> Found previous context registration; Registration aborted.");
56              ras.close();
57              return;
58          }
59          ras.seek(length);
60          ras.writeBytes("/"+service.getContextPath());
61          ras.writeBytes("\n");
62          ras.close();
63      }
64  }
65