svn commit: r1086913 [45/46] - in /websites/production/commons/content/proper/commons-logging: ./ apidocs/ apidocs/legal/ apidocs/org/apache/commons/logging/ apidocs/org/apache/commons/logging/class-use/ apidocs/org/apache/commons/logging/impl/ apidocs...

[ggregory]

Modified: 
websites/production/commons/content/proper/commons-logging/xref/org/apache/commons/logging/impl/WeakHashtable.html
==============================================================================
--- 
websites/production/commons/content/proper/commons-logging/xref/org/apache/commons/logging/impl/WeakHashtable.html
 (original)
+++ 
websites/production/commons/content/proper/commons-logging/xref/org/apache/commons/logging/impl/WeakHashtable.html
 Thu Jul  4 12:10:51 2024
@@ -38,477 +38,486 @@
 <a class="jxr_linenumber" name="L30" href="#L30">30</a>  <strong 
class="jxr_keyword">import</strong> java.util.Set;
 <a class="jxr_linenumber" name="L31" href="#L31">31</a>  
 <a class="jxr_linenumber" name="L32" href="#L32">32</a>  <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L33" href="#L33">33</a>  <em 
class="jxr_javadoccomment"> * Implementation of {@code Hashtable} that uses 
{@code WeakReference}'s</em>
+<a class="jxr_linenumber" name="L33" href="#L33">33</a>  <em 
class="jxr_javadoccomment"> * Implements {@code Hashtable} to use {@code 
WeakReference}'s</em>
 <a class="jxr_linenumber" name="L34" href="#L34">34</a>  <em 
class="jxr_javadoccomment"> * to hold its keys thus allowing them to be 
reclaimed by the garbage collector.</em>
 <a class="jxr_linenumber" name="L35" href="#L35">35</a>  <em 
class="jxr_javadoccomment"> * The associated values are retained using strong 
references.</em>
 <a class="jxr_linenumber" name="L36" href="#L36">36</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
 <a class="jxr_linenumber" name="L37" href="#L37">37</a>  <em 
class="jxr_javadoccomment"> * This class follows the semantics of {@code 
Hashtable} as closely as</em>
 <a class="jxr_linenumber" name="L38" href="#L38">38</a>  <em 
class="jxr_javadoccomment"> * possible. It therefore does not accept null 
values or keys.</em>
-<a class="jxr_linenumber" name="L39" href="#L39">39</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L40" href="#L40">40</a>  <em 
class="jxr_javadoccomment"> * &lt;strong&gt;Note:&lt;/strong&gt;</em>
-<a class="jxr_linenumber" name="L41" href="#L41">41</a>  <em 
class="jxr_javadoccomment"> * This is &lt;em&gt;not&lt;/em&gt; intended to be a 
general purpose hash table replacement.</em>
-<a class="jxr_linenumber" name="L42" href="#L42">42</a>  <em 
class="jxr_javadoccomment"> * This implementation is also tuned towards a 
particular purpose: for use as a replacement</em>
-<a class="jxr_linenumber" name="L43" href="#L43">43</a>  <em 
class="jxr_javadoccomment"> * for {@code Hashtable} in {@code LogFactory}. This 
application requires</em>
-<a class="jxr_linenumber" name="L44" href="#L44">44</a>  <em 
class="jxr_javadoccomment"> * good liveliness for {@code get} and {@code put}. 
Various tradeoffs</em>
-<a class="jxr_linenumber" name="L45" href="#L45">45</a>  <em 
class="jxr_javadoccomment"> * have been made with this in mind.</em>
-<a class="jxr_linenumber" name="L46" href="#L46">46</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L47" href="#L47">47</a>  <em 
class="jxr_javadoccomment"> * &lt;strong&gt;Usage:&lt;/strong&gt; typical use 
case is as a drop-in replacement</em>
-<a class="jxr_linenumber" name="L48" href="#L48">48</a>  <em 
class="jxr_javadoccomment"> * for the {@code Hashtable} used in {@code 
LogFactory} for J2EE environments</em>
-<a class="jxr_linenumber" name="L49" href="#L49">49</a>  <em 
class="jxr_javadoccomment"> * running 1.3+ JVMs. Use of this class &lt;i&gt;in 
most cases&lt;/i&gt; (see below) will</em>
-<a class="jxr_linenumber" name="L50" href="#L50">50</a>  <em 
class="jxr_javadoccomment"> * allow class loaders to be collected by the 
garbage collector without the need</em>
-<a class="jxr_linenumber" name="L51" href="#L51">51</a>  <em 
class="jxr_javadoccomment"> * to call {@link 
org.apache.commons.logging.LogFactory#release(ClassLoader) 
LogFactory.release(ClassLoader)}.</em>
-<a class="jxr_linenumber" name="L52" href="#L52">52</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L53" href="#L53">53</a>  <em 
class="jxr_javadoccomment"> * {@code org.apache.commons.logging.LogFactory} 
checks whether this class</em>
-<a class="jxr_linenumber" name="L54" href="#L54">54</a>  <em 
class="jxr_javadoccomment"> * can be supported by the current JVM, and if so 
then uses it to store</em>
-<a class="jxr_linenumber" name="L55" href="#L55">55</a>  <em 
class="jxr_javadoccomment"> * references to the {@code LogFactory} 
implementation it loads</em>
-<a class="jxr_linenumber" name="L56" href="#L56">56</a>  <em 
class="jxr_javadoccomment"> * (rather than using a standard Hashtable 
instance).</em>
-<a class="jxr_linenumber" name="L57" href="#L57">57</a>  <em 
class="jxr_javadoccomment"> * Having this class used instead of {@code 
Hashtable} solves</em>
-<a class="jxr_linenumber" name="L58" href="#L58">58</a>  <em 
class="jxr_javadoccomment"> * certain issues related to dynamic reloading of 
applications in J2EE-style</em>
-<a class="jxr_linenumber" name="L59" href="#L59">59</a>  <em 
class="jxr_javadoccomment"> * environments. However this class requires Java 
1.3 or later (due to its use</em>
-<a class="jxr_linenumber" name="L60" href="#L60">60</a>  <em 
class="jxr_javadoccomment"> * of {@link java.lang.ref.WeakReference} and 
associates).</em>
-<a class="jxr_linenumber" name="L61" href="#L61">61</a>  <em 
class="jxr_javadoccomment"> * And by the way, this extends {@code Hashtable} 
rather than {@code HashMap}</em>
-<a class="jxr_linenumber" name="L62" href="#L62">62</a>  <em 
class="jxr_javadoccomment"> * for backwards compatibility reasons. See the 
documentation</em>
-<a class="jxr_linenumber" name="L63" href="#L63">63</a>  <em 
class="jxr_javadoccomment"> * for method {@code LogFactory.createFactoryStore} 
for more details.</em>
-<a class="jxr_linenumber" name="L64" href="#L64">64</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L65" href="#L65">65</a>  <em 
class="jxr_javadoccomment"> * The reason all this is necessary is due to a 
issue which</em>
-<a class="jxr_linenumber" name="L66" href="#L66">66</a>  <em 
class="jxr_javadoccomment"> * arises during hot deploy in a J2EE-like 
containers.</em>
-<a class="jxr_linenumber" name="L67" href="#L67">67</a>  <em 
class="jxr_javadoccomment"> * Each component running in the container owns one 
or more class loaders; when</em>
-<a class="jxr_linenumber" name="L68" href="#L68">68</a>  <em 
class="jxr_javadoccomment"> * the component loads a LogFactory instance via the 
component class loader</em>
-<a class="jxr_linenumber" name="L69" href="#L69">69</a>  <em 
class="jxr_javadoccomment"> * a reference to it gets stored in the static 
LogFactory.factories member,</em>
-<a class="jxr_linenumber" name="L70" href="#L70">70</a>  <em 
class="jxr_javadoccomment"> * keyed by the component's class loader so 
different components don't</em>
-<a class="jxr_linenumber" name="L71" href="#L71">71</a>  <em 
class="jxr_javadoccomment"> * stomp on each other. When the component is later 
unloaded, the container</em>
-<a class="jxr_linenumber" name="L72" href="#L72">72</a>  <em 
class="jxr_javadoccomment"> * sets the component's class loader to null with 
the intent that all the</em>
-<a class="jxr_linenumber" name="L73" href="#L73">73</a>  <em 
class="jxr_javadoccomment"> * component's classes get garbage-collected. 
However there's still a</em>
-<a class="jxr_linenumber" name="L74" href="#L74">74</a>  <em 
class="jxr_javadoccomment"> * reference to the component's class loader from a 
key in the "global"</em>
-<a class="jxr_linenumber" name="L75" href="#L75">75</a>  <em 
class="jxr_javadoccomment"> * {@code LogFactory}'s factories member! If {@code 
LogFactory.release()}</em>
-<a class="jxr_linenumber" name="L76" href="#L76">76</a>  <em 
class="jxr_javadoccomment"> * is called whenever component is unloaded, the 
class loaders will be correctly</em>
-<a class="jxr_linenumber" name="L77" href="#L77">77</a>  <em 
class="jxr_javadoccomment"> * garbage collected; this &lt;i&gt;should&lt;/i&gt; 
be done by any container that</em>
-<a class="jxr_linenumber" name="L78" href="#L78">78</a>  <em 
class="jxr_javadoccomment"> * bundles commons-logging by default. However, 
holding the class loader</em>
-<a class="jxr_linenumber" name="L79" href="#L79">79</a>  <em 
class="jxr_javadoccomment"> * references weakly ensures that the class loader 
will be garbage collected</em>
-<a class="jxr_linenumber" name="L80" href="#L80">80</a>  <em 
class="jxr_javadoccomment"> * without the container performing this step.</em>
-<a class="jxr_linenumber" name="L81" href="#L81">81</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L82" href="#L82">82</a>  <em 
class="jxr_javadoccomment"> * &lt;strong&gt;Limitations:&lt;/strong&gt;</em>
-<a class="jxr_linenumber" name="L83" href="#L83">83</a>  <em 
class="jxr_javadoccomment"> * There is still one (unusual) scenario in which a 
component will not</em>
-<a class="jxr_linenumber" name="L84" href="#L84">84</a>  <em 
class="jxr_javadoccomment"> * be correctly unloaded without an explicit 
release. Though weak references</em>
-<a class="jxr_linenumber" name="L85" href="#L85">85</a>  <em 
class="jxr_javadoccomment"> * are used for its keys, it is necessary to use 
strong references for its values.</em>
+<a class="jxr_linenumber" name="L39" href="#L39">39</a>  <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L40" href="#L40">40</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L41" href="#L41">41</a>  <em 
class="jxr_javadoccomment"> * &lt;strong&gt;Note:&lt;/strong&gt;</em>
+<a class="jxr_linenumber" name="L42" href="#L42">42</a>  <em 
class="jxr_javadoccomment"> * This is &lt;em&gt;not&lt;/em&gt; intended to be a 
general purpose hash table replacement.</em>
+<a class="jxr_linenumber" name="L43" href="#L43">43</a>  <em 
class="jxr_javadoccomment"> * This implementation is also tuned towards a 
particular purpose: for use as a replacement</em>
+<a class="jxr_linenumber" name="L44" href="#L44">44</a>  <em 
class="jxr_javadoccomment"> * for {@code Hashtable} in {@code LogFactory}. This 
application requires</em>
+<a class="jxr_linenumber" name="L45" href="#L45">45</a>  <em 
class="jxr_javadoccomment"> * good liveliness for {@code get} and {@code put}. 
Various tradeoffs</em>
+<a class="jxr_linenumber" name="L46" href="#L46">46</a>  <em 
class="jxr_javadoccomment"> * have been made with this in mind.</em>
+<a class="jxr_linenumber" name="L47" href="#L47">47</a>  <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L48" href="#L48">48</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L49" href="#L49">49</a>  <em 
class="jxr_javadoccomment"> * &lt;strong&gt;Usage:&lt;/strong&gt; typical use 
case is as a drop-in replacement</em>
+<a class="jxr_linenumber" name="L50" href="#L50">50</a>  <em 
class="jxr_javadoccomment"> * for the {@code Hashtable} used in {@code 
LogFactory} for J2EE environments</em>
+<a class="jxr_linenumber" name="L51" href="#L51">51</a>  <em 
class="jxr_javadoccomment"> * running 1.3+ JVMs. Use of this class &lt;i&gt;in 
most cases&lt;/i&gt; (see below) will</em>
+<a class="jxr_linenumber" name="L52" href="#L52">52</a>  <em 
class="jxr_javadoccomment"> * allow class loaders to be collected by the 
garbage collector without the need</em>
+<a class="jxr_linenumber" name="L53" href="#L53">53</a>  <em 
class="jxr_javadoccomment"> * to call {@link 
org.apache.commons.logging.LogFactory#release(ClassLoader) 
LogFactory.release(ClassLoader)}.</em>
+<a class="jxr_linenumber" name="L54" href="#L54">54</a>  <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L55" href="#L55">55</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L56" href="#L56">56</a>  <em 
class="jxr_javadoccomment"> * {@code org.apache.commons.logging.LogFactory} 
checks whether this class</em>
+<a class="jxr_linenumber" name="L57" href="#L57">57</a>  <em 
class="jxr_javadoccomment"> * can be supported by the current JVM, and if so 
then uses it to store</em>
+<a class="jxr_linenumber" name="L58" href="#L58">58</a>  <em 
class="jxr_javadoccomment"> * references to the {@code LogFactory} 
implementation it loads</em>
+<a class="jxr_linenumber" name="L59" href="#L59">59</a>  <em 
class="jxr_javadoccomment"> * (rather than using a standard Hashtable 
instance).</em>
+<a class="jxr_linenumber" name="L60" href="#L60">60</a>  <em 
class="jxr_javadoccomment"> * Having this class used instead of {@code 
Hashtable} solves</em>
+<a class="jxr_linenumber" name="L61" href="#L61">61</a>  <em 
class="jxr_javadoccomment"> * certain issues related to dynamic reloading of 
applications in J2EE-style</em>
+<a class="jxr_linenumber" name="L62" href="#L62">62</a>  <em 
class="jxr_javadoccomment"> * environments. However this class requires Java 
1.3 or later (due to its use</em>
+<a class="jxr_linenumber" name="L63" href="#L63">63</a>  <em 
class="jxr_javadoccomment"> * of {@link java.lang.ref.WeakReference} and 
associates).</em>
+<a class="jxr_linenumber" name="L64" href="#L64">64</a>  <em 
class="jxr_javadoccomment"> * And by the way, this extends {@code Hashtable} 
rather than {@code HashMap}</em>
+<a class="jxr_linenumber" name="L65" href="#L65">65</a>  <em 
class="jxr_javadoccomment"> * for backwards compatibility reasons. See the 
documentation</em>
+<a class="jxr_linenumber" name="L66" href="#L66">66</a>  <em 
class="jxr_javadoccomment"> * for method {@code LogFactory.createFactoryStore} 
for more details.</em>
+<a class="jxr_linenumber" name="L67" href="#L67">67</a>  <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L68" href="#L68">68</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L69" href="#L69">69</a>  <em 
class="jxr_javadoccomment"> * The reason all this is necessary is due to a 
issue which</em>
+<a class="jxr_linenumber" name="L70" href="#L70">70</a>  <em 
class="jxr_javadoccomment"> * arises during hot deploy in a J2EE-like 
containers.</em>
+<a class="jxr_linenumber" name="L71" href="#L71">71</a>  <em 
class="jxr_javadoccomment"> * Each component running in the container owns one 
or more class loaders; when</em>
+<a class="jxr_linenumber" name="L72" href="#L72">72</a>  <em 
class="jxr_javadoccomment"> * the component loads a LogFactory instance via the 
component class loader</em>
+<a class="jxr_linenumber" name="L73" href="#L73">73</a>  <em 
class="jxr_javadoccomment"> * a reference to it gets stored in the static 
LogFactory.factories member,</em>
+<a class="jxr_linenumber" name="L74" href="#L74">74</a>  <em 
class="jxr_javadoccomment"> * keyed by the component's class loader so 
different components don't</em>
+<a class="jxr_linenumber" name="L75" href="#L75">75</a>  <em 
class="jxr_javadoccomment"> * stomp on each other. When the component is later 
unloaded, the container</em>
+<a class="jxr_linenumber" name="L76" href="#L76">76</a>  <em 
class="jxr_javadoccomment"> * sets the component's class loader to null with 
the intent that all the</em>
+<a class="jxr_linenumber" name="L77" href="#L77">77</a>  <em 
class="jxr_javadoccomment"> * component's classes get garbage-collected. 
However there's still a</em>
+<a class="jxr_linenumber" name="L78" href="#L78">78</a>  <em 
class="jxr_javadoccomment"> * reference to the component's class loader from a 
key in the "global"</em>
+<a class="jxr_linenumber" name="L79" href="#L79">79</a>  <em 
class="jxr_javadoccomment"> * {@code LogFactory}'s factories member! If {@code 
LogFactory.release()}</em>
+<a class="jxr_linenumber" name="L80" href="#L80">80</a>  <em 
class="jxr_javadoccomment"> * is called whenever component is unloaded, the 
class loaders will be correctly</em>
+<a class="jxr_linenumber" name="L81" href="#L81">81</a>  <em 
class="jxr_javadoccomment"> * garbage collected; this &lt;i&gt;should&lt;/i&gt; 
be done by any container that</em>
+<a class="jxr_linenumber" name="L82" href="#L82">82</a>  <em 
class="jxr_javadoccomment"> * bundles commons-logging by default. However, 
holding the class loader</em>
+<a class="jxr_linenumber" name="L83" href="#L83">83</a>  <em 
class="jxr_javadoccomment"> * references weakly ensures that the class loader 
will be garbage collected</em>
+<a class="jxr_linenumber" name="L84" href="#L84">84</a>  <em 
class="jxr_javadoccomment"> * without the container performing this step.</em>
+<a class="jxr_linenumber" name="L85" href="#L85">85</a>  <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
 <a class="jxr_linenumber" name="L86" href="#L86">86</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L87" href="#L87">87</a>  <em 
class="jxr_javadoccomment"> * If the abstract class {@code LogFactory} is</em>
-<a class="jxr_linenumber" name="L88" href="#L88">88</a>  <em 
class="jxr_javadoccomment"> * loaded by the container class loader but a 
subclass of</em>
-<a class="jxr_linenumber" name="L89" href="#L89">89</a>  <em 
class="jxr_javadoccomment"> * {@code LogFactory} [LogFactory1] is loaded by the 
component's</em>
-<a class="jxr_linenumber" name="L90" href="#L90">90</a>  <em 
class="jxr_javadoccomment"> * class loader and an instance stored in the static 
map associated with the</em>
-<a class="jxr_linenumber" name="L91" href="#L91">91</a>  <em 
class="jxr_javadoccomment"> * base LogFactory class, then there is a strong 
reference from the LogFactory</em>
-<a class="jxr_linenumber" name="L92" href="#L92">92</a>  <em 
class="jxr_javadoccomment"> * class to the LogFactory1 instance (as normal) and 
a strong reference from</em>
-<a class="jxr_linenumber" name="L93" href="#L93">93</a>  <em 
class="jxr_javadoccomment"> * the LogFactory1 instance to the component class 
loader via</em>
-<a class="jxr_linenumber" name="L94" href="#L94">94</a>  <em 
class="jxr_javadoccomment"> * {@code getClass().getClassLoader()}. This chain 
of references will prevent</em>
-<a class="jxr_linenumber" name="L95" href="#L95">95</a>  <em 
class="jxr_javadoccomment"> * collection of the child class loader.</em>
-<a class="jxr_linenumber" name="L96" href="#L96">96</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L97" href="#L97">97</a>  <em 
class="jxr_javadoccomment"> * Such a situation occurs when the 
commons-logging.jar is</em>
-<a class="jxr_linenumber" name="L98" href="#L98">98</a>  <em 
class="jxr_javadoccomment"> * loaded by a parent class loader (e.g. a server 
level class loader in a</em>
-<a class="jxr_linenumber" name="L99" href="#L99">99</a>  <em 
class="jxr_javadoccomment"> * servlet container) and a custom {@code 
LogFactory} implementation is</em>
-<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em 
class="jxr_javadoccomment"> * loaded by a child class loader (e.g. a web app 
class loader).</em>
-<a class="jxr_linenumber" name="L101" href="#L101">101</a> <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
-<a class="jxr_linenumber" name="L102" href="#L102">102</a> <em 
class="jxr_javadoccomment"> * To avoid this scenario, ensure</em>
-<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em 
class="jxr_javadoccomment"> * that any custom LogFactory subclass is loaded by 
the same class loader as</em>
-<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em 
class="jxr_javadoccomment"> * the base {@code LogFactory}. Creating custom 
LogFactory subclasses is,</em>
-<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em 
class="jxr_javadoccomment"> * however, rare. The standard LogFactoryImpl class 
should be sufficient</em>
-<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em 
class="jxr_javadoccomment"> * for most or all users.</em>
-<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em 
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em 
class="jxr_javadoccomment"> * @since 1.1</em>
-<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em 
class="jxr_javadoccomment"> * @deprecated No longer used, will be removed in 
2.0.</em>
-<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em 
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L111" href="#L111">111</a> @Deprecated
-<a class="jxr_linenumber" name="L112" href="#L112">112</a> <strong 
class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">class</strong> <a name="WeakHashtable" 
href="../../../../../org/apache/commons/logging/impl/WeakHashtable.html#WeakHashtable">WeakHashtable</a>
 <strong class="jxr_keyword">extends</strong> Hashtable {
-<a class="jxr_linenumber" name="L113" href="#L113">113</a> 
-<a class="jxr_linenumber" name="L114" href="#L114">114</a>     <em 
class="jxr_javadoccomment">/** Entry implementation */</em>
-<a class="jxr_linenumber" name="L115" href="#L115">115</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">static</strong> <strong 
class="jxr_keyword">class</strong> Entry <strong 
class="jxr_keyword">implements</strong> Map.Entry {
-<a class="jxr_linenumber" name="L116" href="#L116">116</a> 
-<a class="jxr_linenumber" name="L117" href="#L117">117</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
Object key;
-<a class="jxr_linenumber" name="L118" href="#L118">118</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
Object value;
-<a class="jxr_linenumber" name="L119" href="#L119">119</a> 
-<a class="jxr_linenumber" name="L120" href="#L120">120</a>         <strong 
class="jxr_keyword">private</strong> Entry(<strong 
class="jxr_keyword">final</strong> Object key, <strong 
class="jxr_keyword">final</strong> Object value) {
-<a class="jxr_linenumber" name="L121" href="#L121">121</a>             <strong 
class="jxr_keyword">this</strong>.key = key;
-<a class="jxr_linenumber" name="L122" href="#L122">122</a>             <strong 
class="jxr_keyword">this</strong>.value = value;
-<a class="jxr_linenumber" name="L123" href="#L123">123</a>         }
-<a class="jxr_linenumber" name="L124" href="#L124">124</a> 
-<a class="jxr_linenumber" name="L125" href="#L125">125</a>         @Override
-<a class="jxr_linenumber" name="L126" href="#L126">126</a>         <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> equals(<strong 
class="jxr_keyword">final</strong> Object o) {
-<a class="jxr_linenumber" name="L127" href="#L127">127</a>             <strong 
class="jxr_keyword">boolean</strong> result = false;
-<a class="jxr_linenumber" name="L128" href="#L128">128</a>             <strong 
class="jxr_keyword">if</strong> (o instanceof Map.Entry) {
-<a class="jxr_linenumber" name="L129" href="#L129">129</a>                 
<strong class="jxr_keyword">final</strong> Map.Entry entry = (Map.Entry) o;
-<a class="jxr_linenumber" name="L130" href="#L130">130</a>                 
result =    (getKey()==<strong class="jxr_keyword">null</strong> ?
-<a class="jxr_linenumber" name="L131" href="#L131">131</a>                     
                        entry.getKey() == <strong 
class="jxr_keyword">null</strong> :
-<a class="jxr_linenumber" name="L132" href="#L132">132</a>                     
                        getKey().equals(entry.getKey())) &amp;&amp;
-<a class="jxr_linenumber" name="L133" href="#L133">133</a>                     
        (getValue()==<strong class="jxr_keyword">null</strong> ?
-<a class="jxr_linenumber" name="L134" href="#L134">134</a>                     
                        entry.getValue() == <strong 
class="jxr_keyword">null</strong> :
-<a class="jxr_linenumber" name="L135" href="#L135">135</a>                     
                        getValue().equals(entry.getValue()));
-<a class="jxr_linenumber" name="L136" href="#L136">136</a>             }
-<a class="jxr_linenumber" name="L137" href="#L137">137</a>             <strong 
class="jxr_keyword">return</strong> result;
-<a class="jxr_linenumber" name="L138" href="#L138">138</a>         }
-<a class="jxr_linenumber" name="L139" href="#L139">139</a> 
-<a class="jxr_linenumber" name="L140" href="#L140">140</a>         @Override
-<a class="jxr_linenumber" name="L141" href="#L141">141</a>         <strong 
class="jxr_keyword">public</strong> Object getKey() {
-<a class="jxr_linenumber" name="L142" href="#L142">142</a>             <strong 
class="jxr_keyword">return</strong> key;
-<a class="jxr_linenumber" name="L143" href="#L143">143</a>         }
-<a class="jxr_linenumber" name="L144" href="#L144">144</a> 
-<a class="jxr_linenumber" name="L145" href="#L145">145</a>         @Override
-<a class="jxr_linenumber" name="L146" href="#L146">146</a>         <strong 
class="jxr_keyword">public</strong> Object getValue() {
-<a class="jxr_linenumber" name="L147" href="#L147">147</a>             <strong 
class="jxr_keyword">return</strong> value;
-<a class="jxr_linenumber" name="L148" href="#L148">148</a>         }
-<a class="jxr_linenumber" name="L149" href="#L149">149</a> 
-<a class="jxr_linenumber" name="L150" href="#L150">150</a>         @Override
-<a class="jxr_linenumber" name="L151" href="#L151">151</a>         <strong 
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> 
hashCode() {
-<a class="jxr_linenumber" name="L152" href="#L152">152</a>             <strong 
class="jxr_keyword">return</strong> (getKey()==<strong 
class="jxr_keyword">null</strong> ? 0 : getKey().hashCode()) ^
-<a class="jxr_linenumber" name="L153" href="#L153">153</a>                 
(getValue()==<strong class="jxr_keyword">null</strong> ? 0 : 
getValue().hashCode());
-<a class="jxr_linenumber" name="L154" href="#L154">154</a>         }
-<a class="jxr_linenumber" name="L155" href="#L155">155</a> 
-<a class="jxr_linenumber" name="L156" href="#L156">156</a>         @Override
-<a class="jxr_linenumber" name="L157" href="#L157">157</a>         <strong 
class="jxr_keyword">public</strong> Object setValue(<strong 
class="jxr_keyword">final</strong> Object value) {
-<a class="jxr_linenumber" name="L158" href="#L158">158</a>             <strong 
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> 
UnsupportedOperationException(<span class="jxr_string">"Entry.setValue is not 
supported."</span>);
-<a class="jxr_linenumber" name="L159" href="#L159">159</a>         }
-<a class="jxr_linenumber" name="L160" href="#L160">160</a>     }
-<a class="jxr_linenumber" name="L161" href="#L161">161</a> 
-<a class="jxr_linenumber" name="L162" href="#L162">162</a>     <em 
class="jxr_javadoccomment">/** Wrapper giving correct symantics for equals and 
hash code */</em>
-<a class="jxr_linenumber" name="L163" href="#L163">163</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">static</strong> <strong 
class="jxr_keyword">class</strong> Referenced {
+<a class="jxr_linenumber" name="L87" href="#L87">87</a>  <em 
class="jxr_javadoccomment"> * &lt;strong&gt;Limitations:&lt;/strong&gt;</em>
+<a class="jxr_linenumber" name="L88" href="#L88">88</a>  <em 
class="jxr_javadoccomment"> * There is still one (unusual) scenario in which a 
component will not</em>
+<a class="jxr_linenumber" name="L89" href="#L89">89</a>  <em 
class="jxr_javadoccomment"> * be correctly unloaded without an explicit 
release. Though weak references</em>
+<a class="jxr_linenumber" name="L90" href="#L90">90</a>  <em 
class="jxr_javadoccomment"> * are used for its keys, it is necessary to use 
strong references for its values.</em>
+<a class="jxr_linenumber" name="L91" href="#L91">91</a>  <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L92" href="#L92">92</a>  <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L93" href="#L93">93</a>  <em 
class="jxr_javadoccomment"> * If the abstract class {@code LogFactory} is</em>
+<a class="jxr_linenumber" name="L94" href="#L94">94</a>  <em 
class="jxr_javadoccomment"> * loaded by the container class loader but a 
subclass of</em>
+<a class="jxr_linenumber" name="L95" href="#L95">95</a>  <em 
class="jxr_javadoccomment"> * {@code LogFactory} [LogFactory1] is loaded by the 
component's</em>
+<a class="jxr_linenumber" name="L96" href="#L96">96</a>  <em 
class="jxr_javadoccomment"> * class loader and an instance stored in the static 
map associated with the</em>
+<a class="jxr_linenumber" name="L97" href="#L97">97</a>  <em 
class="jxr_javadoccomment"> * base LogFactory class, then there is a strong 
reference from the LogFactory</em>
+<a class="jxr_linenumber" name="L98" href="#L98">98</a>  <em 
class="jxr_javadoccomment"> * class to the LogFactory1 instance (as normal) and 
a strong reference from</em>
+<a class="jxr_linenumber" name="L99" href="#L99">99</a>  <em 
class="jxr_javadoccomment"> * the LogFactory1 instance to the component class 
loader via</em>
+<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em 
class="jxr_javadoccomment"> * {@code getClass().getClassLoader()}. This chain 
of references will prevent</em>
+<a class="jxr_linenumber" name="L101" href="#L101">101</a> <em 
class="jxr_javadoccomment"> * collection of the child class loader.</em>
+<a class="jxr_linenumber" name="L102" href="#L102">102</a> <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em 
class="jxr_javadoccomment"> * Such a situation occurs when the 
commons-logging.jar is</em>
+<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em 
class="jxr_javadoccomment"> * loaded by a parent class loader (e.g. a server 
level class loader in a</em>
+<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em 
class="jxr_javadoccomment"> * servlet container) and a custom {@code 
LogFactory} implementation is</em>
+<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em 
class="jxr_javadoccomment"> * loaded by a child class loader (e.g. a web app 
class loader).</em>
+<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em 
class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em 
class="jxr_javadoccomment"> * To avoid this scenario, ensure</em>
+<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em 
class="jxr_javadoccomment"> * that any custom LogFactory subclass is loaded by 
the same class loader as</em>
+<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em 
class="jxr_javadoccomment"> * the base {@code LogFactory}. Creating custom 
LogFactory subclasses is,</em>
+<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em 
class="jxr_javadoccomment"> * however, rare. The standard LogFactoryImpl class 
should be sufficient</em>
+<a class="jxr_linenumber" name="L114" href="#L114">114</a> <em 
class="jxr_javadoccomment"> * for most or all users.</em>
+<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em 
class="jxr_javadoccomment"> * &lt;/p&gt;</em>
+<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em 
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em 
class="jxr_javadoccomment"> * @since 1.1</em>
+<a class="jxr_linenumber" name="L118" href="#L118">118</a> <em 
class="jxr_javadoccomment"> * @deprecated No longer used, will be removed in 
2.0.</em>
+<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em 
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L120" href="#L120">120</a> @Deprecated
+<a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong 
class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">class</strong> <a name="WeakHashtable" 
href="../../../../../org/apache/commons/logging/impl/WeakHashtable.html#WeakHashtable">WeakHashtable</a>
 <strong class="jxr_keyword">extends</strong> Hashtable {
+<a class="jxr_linenumber" name="L122" href="#L122">122</a> 
+<a class="jxr_linenumber" name="L123" href="#L123">123</a>     <em 
class="jxr_javadoccomment">/** Entry implementation */</em>
+<a class="jxr_linenumber" name="L124" href="#L124">124</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">static</strong> <strong 
class="jxr_keyword">class</strong> Entry <strong 
class="jxr_keyword">implements</strong> Map.Entry {
+<a class="jxr_linenumber" name="L125" href="#L125">125</a> 
+<a class="jxr_linenumber" name="L126" href="#L126">126</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
Object key;
+<a class="jxr_linenumber" name="L127" href="#L127">127</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
Object value;
+<a class="jxr_linenumber" name="L128" href="#L128">128</a> 
+<a class="jxr_linenumber" name="L129" href="#L129">129</a>         <strong 
class="jxr_keyword">private</strong> Entry(<strong 
class="jxr_keyword">final</strong> Object key, <strong 
class="jxr_keyword">final</strong> Object value) {
+<a class="jxr_linenumber" name="L130" href="#L130">130</a>             <strong 
class="jxr_keyword">this</strong>.key = key;
+<a class="jxr_linenumber" name="L131" href="#L131">131</a>             <strong 
class="jxr_keyword">this</strong>.value = value;
+<a class="jxr_linenumber" name="L132" href="#L132">132</a>         }
+<a class="jxr_linenumber" name="L133" href="#L133">133</a> 
+<a class="jxr_linenumber" name="L134" href="#L134">134</a>         @Override
+<a class="jxr_linenumber" name="L135" href="#L135">135</a>         <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> equals(<strong 
class="jxr_keyword">final</strong> Object o) {
+<a class="jxr_linenumber" name="L136" href="#L136">136</a>             <strong 
class="jxr_keyword">boolean</strong> result = false;
+<a class="jxr_linenumber" name="L137" href="#L137">137</a>             <strong 
class="jxr_keyword">if</strong> (o instanceof Map.Entry) {
+<a class="jxr_linenumber" name="L138" href="#L138">138</a>                 
<strong class="jxr_keyword">final</strong> Map.Entry entry = (Map.Entry) o;
+<a class="jxr_linenumber" name="L139" href="#L139">139</a>                 
result =    (getKey()==<strong class="jxr_keyword">null</strong> ?
+<a class="jxr_linenumber" name="L140" href="#L140">140</a>                     
                        entry.getKey() == <strong 
class="jxr_keyword">null</strong> :
+<a class="jxr_linenumber" name="L141" href="#L141">141</a>                     
                        getKey().equals(entry.getKey())) &amp;&amp;
+<a class="jxr_linenumber" name="L142" href="#L142">142</a>                     
        (getValue()==<strong class="jxr_keyword">null</strong> ?
+<a class="jxr_linenumber" name="L143" href="#L143">143</a>                     
                        entry.getValue() == <strong 
class="jxr_keyword">null</strong> :
+<a class="jxr_linenumber" name="L144" href="#L144">144</a>                     
                        getValue().equals(entry.getValue()));
+<a class="jxr_linenumber" name="L145" href="#L145">145</a>             }
+<a class="jxr_linenumber" name="L146" href="#L146">146</a>             <strong 
class="jxr_keyword">return</strong> result;
+<a class="jxr_linenumber" name="L147" href="#L147">147</a>         }
+<a class="jxr_linenumber" name="L148" href="#L148">148</a> 
+<a class="jxr_linenumber" name="L149" href="#L149">149</a>         @Override
+<a class="jxr_linenumber" name="L150" href="#L150">150</a>         <strong 
class="jxr_keyword">public</strong> Object getKey() {
+<a class="jxr_linenumber" name="L151" href="#L151">151</a>             <strong 
class="jxr_keyword">return</strong> key;
+<a class="jxr_linenumber" name="L152" href="#L152">152</a>         }
+<a class="jxr_linenumber" name="L153" href="#L153">153</a> 
+<a class="jxr_linenumber" name="L154" href="#L154">154</a>         @Override
+<a class="jxr_linenumber" name="L155" href="#L155">155</a>         <strong 
class="jxr_keyword">public</strong> Object getValue() {
+<a class="jxr_linenumber" name="L156" href="#L156">156</a>             <strong 
class="jxr_keyword">return</strong> value;
+<a class="jxr_linenumber" name="L157" href="#L157">157</a>         }
+<a class="jxr_linenumber" name="L158" href="#L158">158</a> 
+<a class="jxr_linenumber" name="L159" href="#L159">159</a>         @Override
+<a class="jxr_linenumber" name="L160" href="#L160">160</a>         <strong 
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> 
hashCode() {
+<a class="jxr_linenumber" name="L161" href="#L161">161</a>             <strong 
class="jxr_keyword">return</strong> (getKey()==<strong 
class="jxr_keyword">null</strong> ? 0 : getKey().hashCode()) ^
+<a class="jxr_linenumber" name="L162" href="#L162">162</a>                 
(getValue()==<strong class="jxr_keyword">null</strong> ? 0 : 
getValue().hashCode());
+<a class="jxr_linenumber" name="L163" href="#L163">163</a>         }
 <a class="jxr_linenumber" name="L164" href="#L164">164</a> 
-<a class="jxr_linenumber" name="L165" href="#L165">165</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
WeakReference reference;
-<a class="jxr_linenumber" name="L166" href="#L166">166</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">int</strong>           hashCode;
-<a class="jxr_linenumber" name="L167" href="#L167">167</a> 
-<a class="jxr_linenumber" name="L168" href="#L168">168</a>         <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L169" href="#L169">169</a> <em 
class="jxr_javadoccomment">         *</em>
-<a class="jxr_linenumber" name="L170" href="#L170">170</a> <em 
class="jxr_javadoccomment">         * @throws NullPointerException if referant 
is {@code null}</em>
-<a class="jxr_linenumber" name="L171" href="#L171">171</a> <em 
class="jxr_javadoccomment">         */</em>
-<a class="jxr_linenumber" name="L172" href="#L172">172</a>         <strong 
class="jxr_keyword">private</strong> Referenced(<strong 
class="jxr_keyword">final</strong> Object referant) {
-<a class="jxr_linenumber" name="L173" href="#L173">173</a>             
reference = <strong class="jxr_keyword">new</strong> WeakReference(referant);
-<a class="jxr_linenumber" name="L174" href="#L174">174</a>             <em 
class="jxr_comment">// Calc a permanent hashCode so calls to 
Hashtable.remove()</em>
-<a class="jxr_linenumber" name="L175" href="#L175">175</a>             <em 
class="jxr_comment">// work if the WeakReference has been cleared</em>
-<a class="jxr_linenumber" name="L176" href="#L176">176</a>             
hashCode  = referant.hashCode();
-<a class="jxr_linenumber" name="L177" href="#L177">177</a>         }
-<a class="jxr_linenumber" name="L178" href="#L178">178</a> 
-<a class="jxr_linenumber" name="L179" href="#L179">179</a>         <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L180" href="#L180">180</a> <em 
class="jxr_javadoccomment">         *</em>
-<a class="jxr_linenumber" name="L181" href="#L181">181</a> <em 
class="jxr_javadoccomment">         * @throws NullPointerException if key is 
{@code null}</em>
-<a class="jxr_linenumber" name="L182" href="#L182">182</a> <em 
class="jxr_javadoccomment">         */</em>
-<a class="jxr_linenumber" name="L183" href="#L183">183</a>         <strong 
class="jxr_keyword">private</strong> Referenced(<strong 
class="jxr_keyword">final</strong> Object key, <strong 
class="jxr_keyword">final</strong> ReferenceQueue queue) {
-<a class="jxr_linenumber" name="L184" href="#L184">184</a>             
reference = <strong class="jxr_keyword">new</strong> WeakKey(key, queue, 
<strong class="jxr_keyword">this</strong>);
-<a class="jxr_linenumber" name="L185" href="#L185">185</a>             <em 
class="jxr_comment">// Calc a permanent hashCode so calls to 
Hashtable.remove()</em>
-<a class="jxr_linenumber" name="L186" href="#L186">186</a>             <em 
class="jxr_comment">// work if the WeakReference has been cleared</em>
-<a class="jxr_linenumber" name="L187" href="#L187">187</a>             
hashCode  = key.hashCode();
-<a class="jxr_linenumber" name="L188" href="#L188">188</a> 
-<a class="jxr_linenumber" name="L189" href="#L189">189</a>         }
-<a class="jxr_linenumber" name="L190" href="#L190">190</a> 
-<a class="jxr_linenumber" name="L191" href="#L191">191</a>         @Override
-<a class="jxr_linenumber" name="L192" href="#L192">192</a>         <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> equals(<strong 
class="jxr_keyword">final</strong> Object o) {
-<a class="jxr_linenumber" name="L193" href="#L193">193</a>             <strong 
class="jxr_keyword">boolean</strong> result = false;
-<a class="jxr_linenumber" name="L194" href="#L194">194</a>             <strong 
class="jxr_keyword">if</strong> (o instanceof Referenced) {
-<a class="jxr_linenumber" name="L195" href="#L195">195</a>                 
<strong class="jxr_keyword">final</strong> Referenced otherKey = (Referenced) o;
-<a class="jxr_linenumber" name="L196" href="#L196">196</a>                 
<strong class="jxr_keyword">final</strong> Object thisKeyValue = getValue();
-<a class="jxr_linenumber" name="L197" href="#L197">197</a>                 
<strong class="jxr_keyword">final</strong> Object otherKeyValue = 
otherKey.getValue();
-<a class="jxr_linenumber" name="L198" href="#L198">198</a>                 
<strong class="jxr_keyword">if</strong> (thisKeyValue == <strong 
class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="L199" href="#L199">199</a>                     
result = otherKeyValue == <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="L200" href="#L200">200</a> 
-<a class="jxr_linenumber" name="L201" href="#L201">201</a>                     
<em class="jxr_comment">// Since our hash code was calculated from the 
original</em>
-<a class="jxr_linenumber" name="L202" href="#L202">202</a>                     
<em class="jxr_comment">// non-null referant, the above check breaks the</em>
-<a class="jxr_linenumber" name="L203" href="#L203">203</a>                     
<em class="jxr_comment">// hash code/equals contract, as two cleared 
Referenced</em>
-<a class="jxr_linenumber" name="L204" href="#L204">204</a>                     
<em class="jxr_comment">// objects could test equal but have different hash 
codes.</em>
-<a class="jxr_linenumber" name="L205" href="#L205">205</a>                     
<em class="jxr_comment">// We can reduce (not eliminate) the chance of this</em>
-<a class="jxr_linenumber" name="L206" href="#L206">206</a>                     
<em class="jxr_comment">// happening by comparing hash codes.</em>
-<a class="jxr_linenumber" name="L207" href="#L207">207</a>                     
result = result &amp;&amp; <strong class="jxr_keyword">this</strong>.hashCode() 
== otherKey.hashCode();
-<a class="jxr_linenumber" name="L208" href="#L208">208</a>                     
<em class="jxr_comment">// In any case, as our c'tor does not allow null 
referants</em>
-<a class="jxr_linenumber" name="L209" href="#L209">209</a>                     
<em class="jxr_comment">// and Hashtable does not do equality checks 
between</em>
-<a class="jxr_linenumber" name="L210" href="#L210">210</a>                     
<em class="jxr_comment">// existing keys, normal hashtable operations should 
never</em>
-<a class="jxr_linenumber" name="L211" href="#L211">211</a>                     
<em class="jxr_comment">// result in an equals comparison between null 
referants</em>
-<a class="jxr_linenumber" name="L212" href="#L212">212</a>                 }
-<a class="jxr_linenumber" name="L213" href="#L213">213</a>                 
<strong class="jxr_keyword">else</strong>
-<a class="jxr_linenumber" name="L214" href="#L214">214</a>                 {
-<a class="jxr_linenumber" name="L215" href="#L215">215</a>                     
result = thisKeyValue.equals(otherKeyValue);
-<a class="jxr_linenumber" name="L216" href="#L216">216</a>                 }
-<a class="jxr_linenumber" name="L217" href="#L217">217</a>             }
-<a class="jxr_linenumber" name="L218" href="#L218">218</a>             <strong 
class="jxr_keyword">return</strong> result;
-<a class="jxr_linenumber" name="L219" href="#L219">219</a>         }
-<a class="jxr_linenumber" name="L220" href="#L220">220</a> 
-<a class="jxr_linenumber" name="L221" href="#L221">221</a>         <strong 
class="jxr_keyword">private</strong> Object getValue() {
-<a class="jxr_linenumber" name="L222" href="#L222">222</a>             <strong 
class="jxr_keyword">return</strong> reference.get();
-<a class="jxr_linenumber" name="L223" href="#L223">223</a>         }
-<a class="jxr_linenumber" name="L224" href="#L224">224</a> 
-<a class="jxr_linenumber" name="L225" href="#L225">225</a>         @Override
-<a class="jxr_linenumber" name="L226" href="#L226">226</a>         <strong 
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> 
hashCode() {
-<a class="jxr_linenumber" name="L227" href="#L227">227</a>             <strong 
class="jxr_keyword">return</strong> hashCode;
+<a class="jxr_linenumber" name="L165" href="#L165">165</a>         @Override
+<a class="jxr_linenumber" name="L166" href="#L166">166</a>         <strong 
class="jxr_keyword">public</strong> Object setValue(<strong 
class="jxr_keyword">final</strong> Object value) {
+<a class="jxr_linenumber" name="L167" href="#L167">167</a>             <strong 
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> 
UnsupportedOperationException(<span class="jxr_string">"Entry.setValue is not 
supported."</span>);
+<a class="jxr_linenumber" name="L168" href="#L168">168</a>         }
+<a class="jxr_linenumber" name="L169" href="#L169">169</a>     }
+<a class="jxr_linenumber" name="L170" href="#L170">170</a> 
+<a class="jxr_linenumber" name="L171" href="#L171">171</a>     <em 
class="jxr_javadoccomment">/** Wrapper giving correct symantics for equals and 
hash code */</em>
+<a class="jxr_linenumber" name="L172" href="#L172">172</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">static</strong> <strong 
class="jxr_keyword">class</strong> Referenced {
+<a class="jxr_linenumber" name="L173" href="#L173">173</a> 
+<a class="jxr_linenumber" name="L174" href="#L174">174</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
WeakReference reference;
+<a class="jxr_linenumber" name="L175" href="#L175">175</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">int</strong>           hashCode;
+<a class="jxr_linenumber" name="L176" href="#L176">176</a> 
+<a class="jxr_linenumber" name="L177" href="#L177">177</a>         <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L178" href="#L178">178</a> <em 
class="jxr_javadoccomment">         *</em>
+<a class="jxr_linenumber" name="L179" href="#L179">179</a> <em 
class="jxr_javadoccomment">         * @throws NullPointerException if referant 
is {@code null}</em>
+<a class="jxr_linenumber" name="L180" href="#L180">180</a> <em 
class="jxr_javadoccomment">         */</em>
+<a class="jxr_linenumber" name="L181" href="#L181">181</a>         <strong 
class="jxr_keyword">private</strong> Referenced(<strong 
class="jxr_keyword">final</strong> Object referant) {
+<a class="jxr_linenumber" name="L182" href="#L182">182</a>             
reference = <strong class="jxr_keyword">new</strong> WeakReference(referant);
+<a class="jxr_linenumber" name="L183" href="#L183">183</a>             <em 
class="jxr_comment">// Calc a permanent hashCode so calls to 
Hashtable.remove()</em>
+<a class="jxr_linenumber" name="L184" href="#L184">184</a>             <em 
class="jxr_comment">// work if the WeakReference has been cleared</em>
+<a class="jxr_linenumber" name="L185" href="#L185">185</a>             
hashCode  = referant.hashCode();
+<a class="jxr_linenumber" name="L186" href="#L186">186</a>         }
+<a class="jxr_linenumber" name="L187" href="#L187">187</a> 
+<a class="jxr_linenumber" name="L188" href="#L188">188</a>         <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L189" href="#L189">189</a> <em 
class="jxr_javadoccomment">         *</em>
+<a class="jxr_linenumber" name="L190" href="#L190">190</a> <em 
class="jxr_javadoccomment">         * @throws NullPointerException if key is 
{@code null}</em>
+<a class="jxr_linenumber" name="L191" href="#L191">191</a> <em 
class="jxr_javadoccomment">         */</em>
+<a class="jxr_linenumber" name="L192" href="#L192">192</a>         <strong 
class="jxr_keyword">private</strong> Referenced(<strong 
class="jxr_keyword">final</strong> Object key, <strong 
class="jxr_keyword">final</strong> ReferenceQueue queue) {
+<a class="jxr_linenumber" name="L193" href="#L193">193</a>             
reference = <strong class="jxr_keyword">new</strong> WeakKey(key, queue, 
<strong class="jxr_keyword">this</strong>);
+<a class="jxr_linenumber" name="L194" href="#L194">194</a>             <em 
class="jxr_comment">// Calc a permanent hashCode so calls to 
Hashtable.remove()</em>
+<a class="jxr_linenumber" name="L195" href="#L195">195</a>             <em 
class="jxr_comment">// work if the WeakReference has been cleared</em>
+<a class="jxr_linenumber" name="L196" href="#L196">196</a>             
hashCode  = key.hashCode();
+<a class="jxr_linenumber" name="L197" href="#L197">197</a> 
+<a class="jxr_linenumber" name="L198" href="#L198">198</a>         }
+<a class="jxr_linenumber" name="L199" href="#L199">199</a> 
+<a class="jxr_linenumber" name="L200" href="#L200">200</a>         @Override
+<a class="jxr_linenumber" name="L201" href="#L201">201</a>         <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> equals(<strong 
class="jxr_keyword">final</strong> Object o) {
+<a class="jxr_linenumber" name="L202" href="#L202">202</a>             <strong 
class="jxr_keyword">boolean</strong> result = false;
+<a class="jxr_linenumber" name="L203" href="#L203">203</a>             <strong 
class="jxr_keyword">if</strong> (o instanceof Referenced) {
+<a class="jxr_linenumber" name="L204" href="#L204">204</a>                 
<strong class="jxr_keyword">final</strong> Referenced otherKey = (Referenced) o;
+<a class="jxr_linenumber" name="L205" href="#L205">205</a>                 
<strong class="jxr_keyword">final</strong> Object thisKeyValue = getValue();
+<a class="jxr_linenumber" name="L206" href="#L206">206</a>                 
<strong class="jxr_keyword">final</strong> Object otherKeyValue = 
otherKey.getValue();
+<a class="jxr_linenumber" name="L207" href="#L207">207</a>                 
<strong class="jxr_keyword">if</strong> (thisKeyValue == <strong 
class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L208" href="#L208">208</a>                     
result = otherKeyValue == <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="L209" href="#L209">209</a> 
+<a class="jxr_linenumber" name="L210" href="#L210">210</a>                     
<em class="jxr_comment">// Since our hash code was calculated from the 
original</em>
+<a class="jxr_linenumber" name="L211" href="#L211">211</a>                     
<em class="jxr_comment">// non-null referant, the above check breaks the</em>
+<a class="jxr_linenumber" name="L212" href="#L212">212</a>                     
<em class="jxr_comment">// hash code/equals contract, as two cleared 
Referenced</em>
+<a class="jxr_linenumber" name="L213" href="#L213">213</a>                     
<em class="jxr_comment">// objects could test equal but have different hash 
codes.</em>
+<a class="jxr_linenumber" name="L214" href="#L214">214</a>                     
<em class="jxr_comment">// We can reduce (not eliminate) the chance of this</em>
+<a class="jxr_linenumber" name="L215" href="#L215">215</a>                     
<em class="jxr_comment">// happening by comparing hash codes.</em>
+<a class="jxr_linenumber" name="L216" href="#L216">216</a>                     
result = result &amp;&amp; hashCode() == otherKey.hashCode();
+<a class="jxr_linenumber" name="L217" href="#L217">217</a>                     
<em class="jxr_comment">// In any case, as our c'tor does not allow null 
referants</em>
+<a class="jxr_linenumber" name="L218" href="#L218">218</a>                     
<em class="jxr_comment">// and Hashtable does not do equality checks 
between</em>
+<a class="jxr_linenumber" name="L219" href="#L219">219</a>                     
<em class="jxr_comment">// existing keys, normal hashtable operations should 
never</em>
+<a class="jxr_linenumber" name="L220" href="#L220">220</a>                     
<em class="jxr_comment">// result in an equals comparison between null 
referants</em>
+<a class="jxr_linenumber" name="L221" href="#L221">221</a>                 }
+<a class="jxr_linenumber" name="L222" href="#L222">222</a>                 
<strong class="jxr_keyword">else</strong>
+<a class="jxr_linenumber" name="L223" href="#L223">223</a>                 {
+<a class="jxr_linenumber" name="L224" href="#L224">224</a>                     
result = thisKeyValue.equals(otherKeyValue);
+<a class="jxr_linenumber" name="L225" href="#L225">225</a>                 }
+<a class="jxr_linenumber" name="L226" href="#L226">226</a>             }
+<a class="jxr_linenumber" name="L227" href="#L227">227</a>             <strong 
class="jxr_keyword">return</strong> result;
 <a class="jxr_linenumber" name="L228" href="#L228">228</a>         }
-<a class="jxr_linenumber" name="L229" href="#L229">229</a>     }
-<a class="jxr_linenumber" name="L230" href="#L230">230</a> 
-<a class="jxr_linenumber" name="L231" href="#L231">231</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L232" href="#L232">232</a> <em 
class="jxr_javadoccomment">     * WeakReference subclass that holds a hard 
reference to an</em>
-<a class="jxr_linenumber" name="L233" href="#L233">233</a> <em 
class="jxr_javadoccomment">     * associated {@code value} and also makes 
accessible</em>
-<a class="jxr_linenumber" name="L234" href="#L234">234</a> <em 
class="jxr_javadoccomment">     * the Referenced object holding it.</em>
-<a class="jxr_linenumber" name="L235" href="#L235">235</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L236" href="#L236">236</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">static</strong> <strong 
class="jxr_keyword">class</strong> WeakKey <strong 
class="jxr_keyword">extends</strong> WeakReference {
-<a class="jxr_linenumber" name="L237" href="#L237">237</a> 
-<a class="jxr_linenumber" name="L238" href="#L238">238</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
Referenced referenced;
+<a class="jxr_linenumber" name="L229" href="#L229">229</a> 
+<a class="jxr_linenumber" name="L230" href="#L230">230</a>         <strong 
class="jxr_keyword">private</strong> Object getValue() {
+<a class="jxr_linenumber" name="L231" href="#L231">231</a>             <strong 
class="jxr_keyword">return</strong> reference.get();
+<a class="jxr_linenumber" name="L232" href="#L232">232</a>         }
+<a class="jxr_linenumber" name="L233" href="#L233">233</a> 
+<a class="jxr_linenumber" name="L234" href="#L234">234</a>         @Override
+<a class="jxr_linenumber" name="L235" href="#L235">235</a>         <strong 
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> 
hashCode() {
+<a class="jxr_linenumber" name="L236" href="#L236">236</a>             <strong 
class="jxr_keyword">return</strong> hashCode;
+<a class="jxr_linenumber" name="L237" href="#L237">237</a>         }
+<a class="jxr_linenumber" name="L238" href="#L238">238</a>     }
 <a class="jxr_linenumber" name="L239" href="#L239">239</a> 
-<a class="jxr_linenumber" name="L240" href="#L240">240</a>         <strong 
class="jxr_keyword">private</strong> WeakKey(<strong 
class="jxr_keyword">final</strong> Object key,
-<a class="jxr_linenumber" name="L241" href="#L241">241</a>                     
    <strong class="jxr_keyword">final</strong> ReferenceQueue queue,
-<a class="jxr_linenumber" name="L242" href="#L242">242</a>                     
    <strong class="jxr_keyword">final</strong> Referenced referenced) {
-<a class="jxr_linenumber" name="L243" href="#L243">243</a>             <strong 
class="jxr_keyword">super</strong>(key, queue);
-<a class="jxr_linenumber" name="L244" href="#L244">244</a>             <strong 
class="jxr_keyword">this</strong>.referenced = referenced;
-<a class="jxr_linenumber" name="L245" href="#L245">245</a>         }
+<a class="jxr_linenumber" name="L240" href="#L240">240</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L241" href="#L241">241</a> <em 
class="jxr_javadoccomment">     * WeakReference subclass that holds a hard 
reference to an</em>
+<a class="jxr_linenumber" name="L242" href="#L242">242</a> <em 
class="jxr_javadoccomment">     * associated {@code value} and also makes 
accessible</em>
+<a class="jxr_linenumber" name="L243" href="#L243">243</a> <em 
class="jxr_javadoccomment">     * the Referenced object holding it.</em>
+<a class="jxr_linenumber" name="L244" href="#L244">244</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L245" href="#L245">245</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">static</strong> <strong 
class="jxr_keyword">class</strong> WeakKey <strong 
class="jxr_keyword">extends</strong> WeakReference {
 <a class="jxr_linenumber" name="L246" href="#L246">246</a> 
-<a class="jxr_linenumber" name="L247" href="#L247">247</a>         <strong 
class="jxr_keyword">private</strong> Referenced getReferenced() {
-<a class="jxr_linenumber" name="L248" href="#L248">248</a>             <strong 
class="jxr_keyword">return</strong> referenced;
-<a class="jxr_linenumber" name="L249" href="#L249">249</a>         }
-<a class="jxr_linenumber" name="L250" href="#L250">250</a>      }
-<a class="jxr_linenumber" name="L251" href="#L251">251</a> 
-<a class="jxr_linenumber" name="L252" href="#L252">252</a>     <em 
class="jxr_javadoccomment">/** Serializable version identifier. */</em>
-<a class="jxr_linenumber" name="L253" href="#L253">253</a>     <strong 
class="jxr_keyword">private</strong> <strong 
class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">long</strong> serialVersionUID = 
-1546036869799732453L;
-<a class="jxr_linenumber" name="L254" href="#L254">254</a> 
-<a class="jxr_linenumber" name="L255" href="#L255">255</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L256" href="#L256">256</a> <em 
class="jxr_javadoccomment">     * The maximum number of times put() or remove() 
can be called before</em>
-<a class="jxr_linenumber" name="L257" href="#L257">257</a> <em 
class="jxr_javadoccomment">     * the map will be purged of all cleared 
entries.</em>
-<a class="jxr_linenumber" name="L258" href="#L258">258</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L259" href="#L259">259</a>     <strong 
class="jxr_keyword">private</strong> <strong 
class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">int</strong> MAX_CHANGES_BEFORE_PURGE = 100;
+<a class="jxr_linenumber" name="L247" href="#L247">247</a>         <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
Referenced referenced;
+<a class="jxr_linenumber" name="L248" href="#L248">248</a> 
+<a class="jxr_linenumber" name="L249" href="#L249">249</a>         <strong 
class="jxr_keyword">private</strong> WeakKey(<strong 
class="jxr_keyword">final</strong> Object key,
+<a class="jxr_linenumber" name="L250" href="#L250">250</a>                     
    <strong class="jxr_keyword">final</strong> ReferenceQueue queue,
+<a class="jxr_linenumber" name="L251" href="#L251">251</a>                     
    <strong class="jxr_keyword">final</strong> Referenced referenced) {
+<a class="jxr_linenumber" name="L252" href="#L252">252</a>             <strong 
class="jxr_keyword">super</strong>(key, queue);
+<a class="jxr_linenumber" name="L253" href="#L253">253</a>             <strong 
class="jxr_keyword">this</strong>.referenced = referenced;
+<a class="jxr_linenumber" name="L254" href="#L254">254</a>         }
+<a class="jxr_linenumber" name="L255" href="#L255">255</a> 
+<a class="jxr_linenumber" name="L256" href="#L256">256</a>         <strong 
class="jxr_keyword">private</strong> Referenced getReferenced() {
+<a class="jxr_linenumber" name="L257" href="#L257">257</a>             <strong 
class="jxr_keyword">return</strong> referenced;
+<a class="jxr_linenumber" name="L258" href="#L258">258</a>         }
+<a class="jxr_linenumber" name="L259" href="#L259">259</a>      }
 <a class="jxr_linenumber" name="L260" href="#L260">260</a> 
-<a class="jxr_linenumber" name="L261" href="#L261">261</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L262" href="#L262">262</a> <em 
class="jxr_javadoccomment">     * The maximum number of times put() or remove() 
can be called before</em>
-<a class="jxr_linenumber" name="L263" href="#L263">263</a> <em 
class="jxr_javadoccomment">     * the map will be purged of one cleared 
entry.</em>
-<a class="jxr_linenumber" name="L264" href="#L264">264</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L265" href="#L265">265</a>     <strong 
class="jxr_keyword">private</strong> <strong 
class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">int</strong> PARTIAL_PURGE_COUNT     = 10;
-<a class="jxr_linenumber" name="L266" href="#L266">266</a> 
-<a class="jxr_linenumber" name="L267" href="#L267">267</a>     <em 
class="jxr_javadoccomment">/** ReferenceQueue we check for GC'd keys. */</em>
-<a class="jxr_linenumber" name="L268" href="#L268">268</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">transient</strong> ReferenceQueue queue = <strong 
class="jxr_keyword">new</strong> ReferenceQueue();
+<a class="jxr_linenumber" name="L261" href="#L261">261</a>     <em 
class="jxr_javadoccomment">/** Serializable version identifier. */</em>
+<a class="jxr_linenumber" name="L262" href="#L262">262</a>     <strong 
class="jxr_keyword">private</strong> <strong 
class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">long</strong> serialVersionUID = 
-1546036869799732453L;
+<a class="jxr_linenumber" name="L263" href="#L263">263</a> 
+<a class="jxr_linenumber" name="L264" href="#L264">264</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L265" href="#L265">265</a> <em 
class="jxr_javadoccomment">     * The maximum number of times put() or remove() 
can be called before</em>
+<a class="jxr_linenumber" name="L266" href="#L266">266</a> <em 
class="jxr_javadoccomment">     * the map will be purged of all cleared 
entries.</em>
+<a class="jxr_linenumber" name="L267" href="#L267">267</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L268" href="#L268">268</a>     <strong 
class="jxr_keyword">private</strong> <strong 
class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">int</strong> MAX_CHANGES_BEFORE_PURGE = 100;
 <a class="jxr_linenumber" name="L269" href="#L269">269</a> 
-<a class="jxr_linenumber" name="L270" href="#L270">270</a>     <em 
class="jxr_javadoccomment">/** Counter used to control how often we purge gc'd 
entries. */</em>
-<a class="jxr_linenumber" name="L271" href="#L271">271</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> 
changeCount;
-<a class="jxr_linenumber" name="L272" href="#L272">272</a> 
-<a class="jxr_linenumber" name="L273" href="#L273">273</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L274" href="#L274">274</a> <em 
class="jxr_javadoccomment">     * Constructs a WeakHashtable with the Hashtable 
default</em>
-<a class="jxr_linenumber" name="L275" href="#L275">275</a> <em 
class="jxr_javadoccomment">     * capacity and load factor.</em>
-<a class="jxr_linenumber" name="L276" href="#L276">276</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L277" href="#L277">277</a>     <strong 
class="jxr_keyword">public</strong> <a name="WeakHashtable" 
href="../../../../../org/apache/commons/logging/impl/WeakHashtable.html#WeakHashtable">WeakHashtable</a>()
 {}
+<a class="jxr_linenumber" name="L270" href="#L270">270</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L271" href="#L271">271</a> <em 
class="jxr_javadoccomment">     * The maximum number of times put() or remove() 
can be called before</em>
+<a class="jxr_linenumber" name="L272" href="#L272">272</a> <em 
class="jxr_javadoccomment">     * the map will be purged of one cleared 
entry.</em>
+<a class="jxr_linenumber" name="L273" href="#L273">273</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L274" href="#L274">274</a>     <strong 
class="jxr_keyword">private</strong> <strong 
class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">int</strong> PARTIAL_PURGE_COUNT     = 10;
+<a class="jxr_linenumber" name="L275" href="#L275">275</a> 
+<a class="jxr_linenumber" name="L276" href="#L276">276</a>     <em 
class="jxr_javadoccomment">/** ReferenceQueue we check for GC'd keys. */</em>
+<a class="jxr_linenumber" name="L277" href="#L277">277</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> 
<strong class="jxr_keyword">transient</strong> ReferenceQueue queue = <strong 
class="jxr_keyword">new</strong> ReferenceQueue();
 <a class="jxr_linenumber" name="L278" href="#L278">278</a> 
-<a class="jxr_linenumber" name="L279" href="#L279">279</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L280" href="#L280">280</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
-<a class="jxr_linenumber" name="L281" href="#L281">281</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L282" href="#L282">282</a>     @Override
-<a class="jxr_linenumber" name="L283" href="#L283">283</a>     <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> containsKey(<strong 
class="jxr_keyword">final</strong> Object key) {
-<a class="jxr_linenumber" name="L284" href="#L284">284</a>         <em 
class="jxr_comment">// purge should not be required</em>
-<a class="jxr_linenumber" name="L285" href="#L285">285</a>         <strong 
class="jxr_keyword">final</strong> Referenced referenced = <strong 
class="jxr_keyword">new</strong> Referenced(key);
-<a class="jxr_linenumber" name="L286" href="#L286">286</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.containsKey(referenced);
-<a class="jxr_linenumber" name="L287" href="#L287">287</a>     }
-<a class="jxr_linenumber" name="L288" href="#L288">288</a> 
-<a class="jxr_linenumber" name="L289" href="#L289">289</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L290" href="#L290">290</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
-<a class="jxr_linenumber" name="L291" href="#L291">291</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L292" href="#L292">292</a>     @Override
-<a class="jxr_linenumber" name="L293" href="#L293">293</a>     <strong 
class="jxr_keyword">public</strong> Enumeration elements() {
-<a class="jxr_linenumber" name="L294" href="#L294">294</a>         purge();
-<a class="jxr_linenumber" name="L295" href="#L295">295</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.elements();
+<a class="jxr_linenumber" name="L279" href="#L279">279</a>     <em 
class="jxr_javadoccomment">/** Counter used to control how often we purge gc'd 
entries. */</em>
+<a class="jxr_linenumber" name="L280" href="#L280">280</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> 
changeCount;
+<a class="jxr_linenumber" name="L281" href="#L281">281</a> 
+<a class="jxr_linenumber" name="L282" href="#L282">282</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L283" href="#L283">283</a> <em 
class="jxr_javadoccomment">     * Constructs a WeakHashtable with the Hashtable 
default</em>
+<a class="jxr_linenumber" name="L284" href="#L284">284</a> <em 
class="jxr_javadoccomment">     * capacity and load factor.</em>
+<a class="jxr_linenumber" name="L285" href="#L285">285</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L286" href="#L286">286</a>     <strong 
class="jxr_keyword">public</strong> <a name="WeakHashtable" 
href="../../../../../org/apache/commons/logging/impl/WeakHashtable.html#WeakHashtable">WeakHashtable</a>()
 {}
+<a class="jxr_linenumber" name="L287" href="#L287">287</a> 
+<a class="jxr_linenumber" name="L288" href="#L288">288</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L289" href="#L289">289</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
+<a class="jxr_linenumber" name="L290" href="#L290">290</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L291" href="#L291">291</a>     @Override
+<a class="jxr_linenumber" name="L292" href="#L292">292</a>     <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> containsKey(<strong 
class="jxr_keyword">final</strong> Object key) {
+<a class="jxr_linenumber" name="L293" href="#L293">293</a>         <em 
class="jxr_comment">// purge should not be required</em>
+<a class="jxr_linenumber" name="L294" href="#L294">294</a>         <strong 
class="jxr_keyword">final</strong> Referenced referenced = <strong 
class="jxr_keyword">new</strong> Referenced(key);
+<a class="jxr_linenumber" name="L295" href="#L295">295</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.containsKey(referenced);
 <a class="jxr_linenumber" name="L296" href="#L296">296</a>     }
 <a class="jxr_linenumber" name="L297" href="#L297">297</a> 
 <a class="jxr_linenumber" name="L298" href="#L298">298</a>     <em 
class="jxr_javadoccomment">/**</em>
 <a class="jxr_linenumber" name="L299" href="#L299">299</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
 <a class="jxr_linenumber" name="L300" href="#L300">300</a> <em 
class="jxr_javadoccomment">     */</em>
 <a class="jxr_linenumber" name="L301" href="#L301">301</a>     @Override
-<a class="jxr_linenumber" name="L302" href="#L302">302</a>     <strong 
class="jxr_keyword">public</strong> Set entrySet() {
+<a class="jxr_linenumber" name="L302" href="#L302">302</a>     <strong 
class="jxr_keyword">public</strong> Enumeration elements() {
 <a class="jxr_linenumber" name="L303" href="#L303">303</a>         purge();
-<a class="jxr_linenumber" name="L304" href="#L304">304</a>         <strong 
class="jxr_keyword">final</strong> Set referencedEntries = <strong 
class="jxr_keyword">super</strong>.entrySet();
-<a class="jxr_linenumber" name="L305" href="#L305">305</a>         <strong 
class="jxr_keyword">final</strong> Set unreferencedEntries = <strong 
class="jxr_keyword">new</strong> HashSet();
-<a class="jxr_linenumber" name="L306" href="#L306">306</a>         <strong 
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> 
Object referencedEntry : referencedEntries) {
-<a class="jxr_linenumber" name="L307" href="#L307">307</a>             <strong 
class="jxr_keyword">final</strong> Map.Entry entry = (Map.Entry) 
referencedEntry;
-<a class="jxr_linenumber" name="L308" href="#L308">308</a>             <strong 
class="jxr_keyword">final</strong> Referenced referencedKey = (Referenced) 
entry.getKey();
-<a class="jxr_linenumber" name="L309" href="#L309">309</a>             <strong 
class="jxr_keyword">final</strong> Object key = referencedKey.getValue();
-<a class="jxr_linenumber" name="L310" href="#L310">310</a>             <strong 
class="jxr_keyword">final</strong> Object value = entry.getValue();
-<a class="jxr_linenumber" name="L311" href="#L311">311</a>             <strong 
class="jxr_keyword">if</strong> (key != <strong 
class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="L312" href="#L312">312</a>                 
<strong class="jxr_keyword">final</strong> Entry dereferencedEntry = <strong 
class="jxr_keyword">new</strong> Entry(key, value);
-<a class="jxr_linenumber" name="L313" href="#L313">313</a>                 
unreferencedEntries.add(dereferencedEntry);
-<a class="jxr_linenumber" name="L314" href="#L314">314</a>             }
-<a class="jxr_linenumber" name="L315" href="#L315">315</a>         }
-<a class="jxr_linenumber" name="L316" href="#L316">316</a>         <strong 
class="jxr_keyword">return</strong> unreferencedEntries;
-<a class="jxr_linenumber" name="L317" href="#L317">317</a>     }
-<a class="jxr_linenumber" name="L318" href="#L318">318</a> 
-<a class="jxr_linenumber" name="L319" href="#L319">319</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L320" href="#L320">320</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
-<a class="jxr_linenumber" name="L321" href="#L321">321</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L322" href="#L322">322</a>     @Override
-<a class="jxr_linenumber" name="L323" href="#L323">323</a>     <strong 
class="jxr_keyword">public</strong> Object get(<strong 
class="jxr_keyword">final</strong> Object key) {
-<a class="jxr_linenumber" name="L324" href="#L324">324</a>         <em 
class="jxr_comment">// for performance reasons, no purge</em>
-<a class="jxr_linenumber" name="L325" href="#L325">325</a>         <strong 
class="jxr_keyword">final</strong> Referenced referenceKey = <strong 
class="jxr_keyword">new</strong> Referenced(key);
-<a class="jxr_linenumber" name="L326" href="#L326">326</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.get(referenceKey);
-<a class="jxr_linenumber" name="L327" href="#L327">327</a>     }
-<a class="jxr_linenumber" name="L328" href="#L328">328</a> 
-<a class="jxr_linenumber" name="L329" href="#L329">329</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L330" href="#L330">330</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
-<a class="jxr_linenumber" name="L331" href="#L331">331</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L332" href="#L332">332</a>     @Override
-<a class="jxr_linenumber" name="L333" href="#L333">333</a>     <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> isEmpty() {
-<a class="jxr_linenumber" name="L334" href="#L334">334</a>         purge();
-<a class="jxr_linenumber" name="L335" href="#L335">335</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.isEmpty();
+<a class="jxr_linenumber" name="L304" href="#L304">304</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.elements();
+<a class="jxr_linenumber" name="L305" href="#L305">305</a>     }
+<a class="jxr_linenumber" name="L306" href="#L306">306</a> 
+<a class="jxr_linenumber" name="L307" href="#L307">307</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L308" href="#L308">308</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
+<a class="jxr_linenumber" name="L309" href="#L309">309</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L310" href="#L310">310</a>     @Override
+<a class="jxr_linenumber" name="L311" href="#L311">311</a>     <strong 
class="jxr_keyword">public</strong> Set entrySet() {
+<a class="jxr_linenumber" name="L312" href="#L312">312</a>         purge();
+<a class="jxr_linenumber" name="L313" href="#L313">313</a>         <strong 
class="jxr_keyword">final</strong> Set referencedEntries = <strong 
class="jxr_keyword">super</strong>.entrySet();
+<a class="jxr_linenumber" name="L314" href="#L314">314</a>         <strong 
class="jxr_keyword">final</strong> Set unreferencedEntries = <strong 
class="jxr_keyword">new</strong> HashSet();
+<a class="jxr_linenumber" name="L315" href="#L315">315</a>         <strong 
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> 
Object referencedEntry : referencedEntries) {
+<a class="jxr_linenumber" name="L316" href="#L316">316</a>             <strong 
class="jxr_keyword">final</strong> Map.Entry entry = (Map.Entry) 
referencedEntry;
+<a class="jxr_linenumber" name="L317" href="#L317">317</a>             <strong 
class="jxr_keyword">final</strong> Referenced referencedKey = (Referenced) 
entry.getKey();
+<a class="jxr_linenumber" name="L318" href="#L318">318</a>             <strong 
class="jxr_keyword">final</strong> Object key = referencedKey.getValue();
+<a class="jxr_linenumber" name="L319" href="#L319">319</a>             <strong 
class="jxr_keyword">final</strong> Object value = entry.getValue();
+<a class="jxr_linenumber" name="L320" href="#L320">320</a>             <strong 
class="jxr_keyword">if</strong> (key != <strong 
class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L321" href="#L321">321</a>                 
<strong class="jxr_keyword">final</strong> Entry dereferencedEntry = <strong 
class="jxr_keyword">new</strong> Entry(key, value);
+<a class="jxr_linenumber" name="L322" href="#L322">322</a>                 
unreferencedEntries.add(dereferencedEntry);
+<a class="jxr_linenumber" name="L323" href="#L323">323</a>             }
+<a class="jxr_linenumber" name="L324" href="#L324">324</a>         }
+<a class="jxr_linenumber" name="L325" href="#L325">325</a>         <strong 
class="jxr_keyword">return</strong> unreferencedEntries;
+<a class="jxr_linenumber" name="L326" href="#L326">326</a>     }
+<a class="jxr_linenumber" name="L327" href="#L327">327</a> 
+<a class="jxr_linenumber" name="L328" href="#L328">328</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L329" href="#L329">329</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
+<a class="jxr_linenumber" name="L330" href="#L330">330</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L331" href="#L331">331</a>     @Override
+<a class="jxr_linenumber" name="L332" href="#L332">332</a>     <strong 
class="jxr_keyword">public</strong> Object get(<strong 
class="jxr_keyword">final</strong> Object key) {
+<a class="jxr_linenumber" name="L333" href="#L333">333</a>         <em 
class="jxr_comment">// for performance reasons, no purge</em>
+<a class="jxr_linenumber" name="L334" href="#L334">334</a>         <strong 
class="jxr_keyword">final</strong> Referenced referenceKey = <strong 
class="jxr_keyword">new</strong> Referenced(key);
+<a class="jxr_linenumber" name="L335" href="#L335">335</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.get(referenceKey);
 <a class="jxr_linenumber" name="L336" href="#L336">336</a>     }
 <a class="jxr_linenumber" name="L337" href="#L337">337</a> 
 <a class="jxr_linenumber" name="L338" href="#L338">338</a>     <em 
class="jxr_javadoccomment">/**</em>
 <a class="jxr_linenumber" name="L339" href="#L339">339</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
 <a class="jxr_linenumber" name="L340" href="#L340">340</a> <em 
class="jxr_javadoccomment">     */</em>
 <a class="jxr_linenumber" name="L341" href="#L341">341</a>     @Override
-<a class="jxr_linenumber" name="L342" href="#L342">342</a>     <strong 
class="jxr_keyword">public</strong> Enumeration keys() {
+<a class="jxr_linenumber" name="L342" href="#L342">342</a>     <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> isEmpty() {
 <a class="jxr_linenumber" name="L343" href="#L343">343</a>         purge();
-<a class="jxr_linenumber" name="L344" href="#L344">344</a>         <strong 
class="jxr_keyword">final</strong> Enumeration enumer = <strong 
class="jxr_keyword">super</strong>.keys();
-<a class="jxr_linenumber" name="L345" href="#L345">345</a>         <strong 
class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> 
Enumeration() {
-<a class="jxr_linenumber" name="L346" href="#L346">346</a>             
@Override
-<a class="jxr_linenumber" name="L347" href="#L347">347</a>             <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> hasMoreElements() {
-<a class="jxr_linenumber" name="L348" href="#L348">348</a>                 
<strong class="jxr_keyword">return</strong> enumer.hasMoreElements();
-<a class="jxr_linenumber" name="L349" href="#L349">349</a>             }
-<a class="jxr_linenumber" name="L350" href="#L350">350</a>             
@Override
-<a class="jxr_linenumber" name="L351" href="#L351">351</a>             <strong 
class="jxr_keyword">public</strong> Object nextElement() {
-<a class="jxr_linenumber" name="L352" href="#L352">352</a>                  
<strong class="jxr_keyword">final</strong> Referenced nextReference = 
(Referenced) enumer.nextElement();
-<a class="jxr_linenumber" name="L353" href="#L353">353</a>                  
<strong class="jxr_keyword">return</strong> nextReference.getValue();
-<a class="jxr_linenumber" name="L354" href="#L354">354</a>             }
-<a class="jxr_linenumber" name="L355" href="#L355">355</a>         };
-<a class="jxr_linenumber" name="L356" href="#L356">356</a>     }
-<a class="jxr_linenumber" name="L357" href="#L357">357</a> 
-<a class="jxr_linenumber" name="L358" href="#L358">358</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L359" href="#L359">359</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
-<a class="jxr_linenumber" name="L360" href="#L360">360</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L361" href="#L361">361</a>     @Override
-<a class="jxr_linenumber" name="L362" href="#L362">362</a>     <strong 
class="jxr_keyword">public</strong> Set keySet() {
-<a class="jxr_linenumber" name="L363" href="#L363">363</a>         purge();
-<a class="jxr_linenumber" name="L364" href="#L364">364</a>         <strong 
class="jxr_keyword">final</strong> Set referencedKeys = <strong 
class="jxr_keyword">super</strong>.keySet();
-<a class="jxr_linenumber" name="L365" href="#L365">365</a>         <strong 
class="jxr_keyword">final</strong> Set unreferencedKeys = <strong 
class="jxr_keyword">new</strong> HashSet();
-<a class="jxr_linenumber" name="L366" href="#L366">366</a>         <strong 
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> 
Object referencedKey : referencedKeys) {
-<a class="jxr_linenumber" name="L367" href="#L367">367</a>             <strong 
class="jxr_keyword">final</strong> Referenced referenceKey = (Referenced) 
referencedKey;
-<a class="jxr_linenumber" name="L368" href="#L368">368</a>             <strong 
class="jxr_keyword">final</strong> Object keyValue = referenceKey.getValue();
-<a class="jxr_linenumber" name="L369" href="#L369">369</a>             <strong 
class="jxr_keyword">if</strong> (keyValue != <strong 
class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="L370" href="#L370">370</a>                 
unreferencedKeys.add(keyValue);
-<a class="jxr_linenumber" name="L371" href="#L371">371</a>             }
-<a class="jxr_linenumber" name="L372" href="#L372">372</a>         }
-<a class="jxr_linenumber" name="L373" href="#L373">373</a>         <strong 
class="jxr_keyword">return</strong> unreferencedKeys;
-<a class="jxr_linenumber" name="L374" href="#L374">374</a>     }
-<a class="jxr_linenumber" name="L375" href="#L375">375</a> 
-<a class="jxr_linenumber" name="L376" href="#L376">376</a>     <em 
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L377" href="#L377">377</a> <em 
class="jxr_javadoccomment">     * Purges all entries whose wrapped keys</em>
-<a class="jxr_linenumber" name="L378" href="#L378">378</a> <em 
class="jxr_javadoccomment">     * have been garbage collected.</em>
-<a class="jxr_linenumber" name="L379" href="#L379">379</a> <em 
class="jxr_javadoccomment">     */</em>
-<a class="jxr_linenumber" name="L380" href="#L380">380</a>     <strong 
class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> 
purge() {
-<a class="jxr_linenumber" name="L381" href="#L381">381</a>         <strong 
class="jxr_keyword">final</strong> List toRemove = <strong 
class="jxr_keyword">new</strong> ArrayList();
-<a class="jxr_linenumber" name="L382" href="#L382">382</a>         <strong 
class="jxr_keyword">synchronized</strong> (queue) {
-<a class="jxr_linenumber" name="L383" href="#L383">383</a>             WeakKey 
key;
-<a class="jxr_linenumber" name="L384" href="#L384">384</a>             <strong 
class="jxr_keyword">while</strong> ((key = (WeakKey) queue.poll()) != <strong 
class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="L385" href="#L385">385</a>                 
toRemove.add(key.getReferenced());
-<a class="jxr_linenumber" name="L386" href="#L386">386</a>             }
-<a class="jxr_linenumber" name="L387" href="#L387">387</a>         }
-<a class="jxr_linenumber" name="L388" href="#L388">388</a> 
-<a class="jxr_linenumber" name="L389" href="#L389">389</a>         <em 
class="jxr_comment">// LOGGING-119: do the actual removal of the keys outside 
the sync block</em>
-<a class="jxr_linenumber" name="L390" href="#L390">390</a>         <em 
class="jxr_comment">// to prevent deadlock scenarios as purge() may be called 
from</em>
-<a class="jxr_linenumber" name="L391" href="#L391">391</a>         <em 
class="jxr_comment">// non-synchronized methods too</em>
-<a class="jxr_linenumber" name="L392" href="#L392">392</a>         <strong 
class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> 
size = toRemove.size();
-<a class="jxr_linenumber" name="L393" href="#L393">393</a>         <strong 
class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 
0; i &lt; size; i++) {
-<a class="jxr_linenumber" name="L394" href="#L394">394</a>             <strong 
class="jxr_keyword">super</strong>.remove(toRemove.get(i));
-<a class="jxr_linenumber" name="L395" href="#L395">395</a>         }
-<a class="jxr_linenumber" name="L396" href="#L396">396</a>     }
+<a class="jxr_linenumber" name="L344" href="#L344">344</a>         <strong 
class="jxr_keyword">return</strong> <strong 
class="jxr_keyword">super</strong>.isEmpty();
+<a class="jxr_linenumber" name="L345" href="#L345">345</a>     }
+<a class="jxr_linenumber" name="L346" href="#L346">346</a> 
+<a class="jxr_linenumber" name="L347" href="#L347">347</a>     <em 
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L348" href="#L348">348</a> <em 
class="jxr_javadoccomment">     *@see Hashtable</em>
+<a class="jxr_linenumber" name="L349" href="#L349">349</a> <em 
class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L350" href="#L350">350</a>     @Override
+<a class="jxr_linenumber" name="L351" href="#L351">351</a>     <strong 
class="jxr_keyword">public</strong> Enumeration keys() {
+<a class="jxr_linenumber" name="L352" href="#L352">352</a>         purge();
+<a class="jxr_linenumber" name="L353" href="#L353">353</a>         <strong 
class="jxr_keyword">final</strong> Enumeration enumer = <strong 
class="jxr_keyword">super</strong>.keys();
+<a class="jxr_linenumber" name="L354" href="#L354">354</a>         <strong 
class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> 
Enumeration() {
+<a class="jxr_linenumber" name="L355" href="#L355">355</a>             
@Override
+<a class="jxr_linenumber" name="L356" href="#L356">356</a>             <strong 
class="jxr_keyword">public</strong> <strong 
class="jxr_keyword">boolean</strong> hasMoreElements() {
+<a class="jxr_linenumber" name="L357" href="#L357">357</a>                 
<strong class="jxr_keyword">return</strong> enumer.hasMoreElements();
+<a class="jxr_linenumber" name="L358" href="#L358">358</a>             }
+<a class="jxr_linenumber" name="L359" href="#L359">359</a>             
@Override
+<a class="jxr_linenumber" name="L360" href="#L360">360</a>             <strong 
class="jxr_keyword">public</strong> Object nextElement() {
+<a class="jxr_linenumber" name="L361" href="#L361">361</a>                  
<strong class="jxr_keyword">final</strong> Referenced nextReference = 
(Referenced) enumer.nextElement();
+<a class="jxr_linenumber" name="L362" href="#L362">362</a>                  
<strong class="jxr_keyword">return</strong> nextReference.getValue();
+<a class="jxr_linenumber" name="L363" href="#L363">363</a>             }
+<a class="jxr_linenumber" name="L364" href="#L364">364</a>         };
+<a class="jxr_linenumber" name="L365" href="#L365">365</a>     }
+<a class="jxr_linenumber" name="L366" href="#L366">366</a> 

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