HeirarchicalLoaderRepository3ConfigParser


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22  package org.jboss.mx.loading;
23  
24  import java.io.ByteArrayInputStream  ;
25  import java.util.Properties  ;
26  
27  import org.jboss.mx.loading.LoaderRepositoryFactory.LoaderRepositoryConfigParser;
28  
29  /** The LoaderRepositoryConfigParser implementation for the HeirarchicalLoaderRepository3.
30   * This implementation supports the single java2ParentDelegation property which
31   * indicates whether the HeirarchicalLoaderRepository3 should load classes from
32   * its scope first followed by its parent repository (java2ParentDelegation=true).
33   *
34   * @author Scott.Stark@jboss.org
35   * @version $Revision: 37459 $
36   */
37  public class HeirarchicalLoaderRepository3ConfigParser
38     implements LoaderRepositoryConfigParser
39  {
40     /** Set the HeirarchicalLoaderRepository3.UseParentFirst attribute based on
41      * the value of the java2ParentDelegation property found in the config.
42      *
43      * @param repository the HeirarchicalLoaderRepository3 to set the
44      * UseParentFirst attribute on.
45      * @param config A string representation of a Properties file
46      * @throws Exception
47      */
48     public void configure(LoaderRepository repository, String   config)
49        throws Exception  
50     {
51        HeirarchicalLoaderRepository3 hlr3 = (HeirarchicalLoaderRepository3) repository;
52        Properties   props = new Properties  ();
53        ByteArrayInputStream   bais = new ByteArrayInputStream  (config.getBytes());
54        props.load(bais);
55        String   java2ParentDelegation = props.getProperty("java2ParentDelegation");
56        if( java2ParentDelegation == null )
57        {
58           // Check for previous mis-spelled property name
59           java2ParentDelegation = props.getProperty("java2ParentDelegaton", "false");
60        }
61        boolean useParentFirst = Boolean.valueOf(java2ParentDelegation).booleanValue();
62        hlr3.setUseParentFirst(useParentFirst);
63     }
64  }
65
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