DefaultNamingPolicy


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54  package org.logicalcobwebs.cglib.core;
55  
56  import java.util.Set  ;
57  
58  /**
59   * The default policy used by {@link AbstractClassGenerator}.
60   * Generates names such as
61   * <p><code>org.logicalcobwebs.cglib.Foo$$EnhancerByCGLIB$$38272841</code><p>
62   * This is composed of a prefix based on the name of the superclass, a fixed
63   * string incorporating the CGLIB class responsible for generation, and a
64   * hashcode derived from the parameters used to create the object. If the same
65   * name has been previously been used in the same <code>ClassLoader</code>, a
66   * suffix is added to ensure uniqueness.
67   */
68  public class DefaultNamingPolicy implements NamingPolicy {
69      public static final DefaultNamingPolicy INSTANCE = new DefaultNamingPolicy();
70      
71      public String   getClassName(String   prefix, String   source, Object   key, Predicate names) {
72          StringBuffer   sb = new StringBuffer  ();
73          sb.append((prefix != null) ? prefix : "org.logicalcobwebs.cglib.empty.Object");
74          sb.append("$$");
75          sb.append(source.substring(source.lastIndexOf('.') + 1));
76          sb.append("ByCGLIB$$");
77          sb.append(Integer.toHexString(key.hashCode()));
78          String   base = sb.toString();
79          String   attempt = base;
80          int index = 2;
81          while (names.evaluate(attempt)) {
82              attempt = base + "-" + index++;
83          }
84          return attempt;
85      }
86  }
87
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