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19  
20  
21  
22  package org.apache.james.core;
23  
24  import org.apache.avalon.framework.configuration.Configuration;
25  
26  import org.apache.james.api.vut.VirtualUserTable;
27  import org.apache.james.api.vut.VirtualUserTableStore;
28  
29  import java.util.Iterator;
30  
31  /**
32   * Provides a registry of VirtualUserTables
33   *
34   */
35  public class AvalonVirtualUserTableStore
36      extends AbstractAvalonStore
37      implements VirtualUserTableStore {
38  
39     
40      /** 
41       * Get the repository, if any, whose name corresponds to
42       * the argument parameter
43       *
44       * @param name the name of the desired repository
45       *
46       * @return the VirtualUserTable corresponding to the name parameter
47       */
48      public VirtualUserTable getTable(String name) {
49          VirtualUserTable response = (VirtualUserTable) getObject(name);
50          if ((response == null) && (getLogger().isWarnEnabled())) {
51              getLogger().warn("No virtualUserTable called: " + name);
52          }
53          return response;
54      }
55  
56      /** 
57       * Yield an <code>Iterator</code> over the set of repository
58       * names managed internally by this store.
59       *
60       * @return an Iterator over the set of repository names
61       *         for this store
62       */
63      public Iterator getTableNames() {
64          return getObjectNames();
65      }
66  
67      /**
68       * @see org.apache.james.core.AbstractAvalonStore#getClassInstance(ClassLoader, String)
69       */
70      public Object getClassInstance(ClassLoader loader, String repClass) throws Exception {
71          return (VirtualUserTable) loader.loadClass(repClass).newInstance();
72      }
73  
74      /**
75       * @see org.apache.james.core.AbstractAvalonStore#getConfigurations(org.apache.avalon.framework.configuration.Configuration)
76       */
77      public Configuration[] getConfigurations(Configuration config) {
78          return configuration.getChildren("table");
79      }
80  
81      /**
82       * @see org.apache.james.core.AbstractAvalonStore#getStoreName()
83       */
84      public String getStoreName() {
85          return "AvalonVirtualUserTableStore";
86      }
87  }