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ConcurrentMap (OpenJPA Parent POM 2.2.2 API)
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org.apache.openjpa.lib.util.concurrent</FONT>
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Interface ConcurrentMap</H2>
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<DT><B>All Superinterfaces:</B> <DD><A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</A></DD>
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<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../../../org/apache/openjpa/lib/util/concurrent/ConcurrentHashMap.html" title="class in org.apache.openjpa.lib.util.concurrent">ConcurrentHashMap</A>, <A HREF="../../../../../../org/apache/openjpa/lib/util/concurrent/ConcurrentReferenceHashMap.html" title="class in org.apache.openjpa.lib.util.concurrent">ConcurrentReferenceHashMap</A></DD>
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<DT><PRE>public interface <B>ConcurrentMap</B><DT>extends <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</A></DL>
</PRE>
<P>
A highly concurrent map.
<P>
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<DL>
<DT><B>Author:</B></DT>
<DD>Abe White</DD>
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<TD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">K</A>,<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">V</A>&gt;</CODE></TD>
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<CODE>&nbsp;<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/openjpa/lib/util/concurrent/ConcurrentMap.html#randomEntryIterator()">randomEntryIterator</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Iterate over map entries, beginning at an arbitrary
(not strictly random) entry.</TD>
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<CODE>&nbsp;<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../org/apache/openjpa/lib/util/concurrent/ConcurrentMap.html#removeRandom()">removeRandom</A></B>()</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove an arbitrary(not strictly random) entry from the map.</TD>
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<TD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#clear()" title="class or interface in java.util">clear</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#containsKey(java.lang.Object)" title="class or interface in java.util">containsKey</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#containsValue(java.lang.Object)" title="class or interface in java.util">containsValue</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#entrySet()" title="class or interface in java.util">entrySet</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.util">equals</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#get(java.lang.Object)" title="class or interface in java.util">get</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#hashCode()" title="class or interface in java.util">hashCode</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#isEmpty()" title="class or interface in java.util">isEmpty</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#keySet()" title="class or interface in java.util">keySet</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#put(K, V)" title="class or interface in java.util">put</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#putAll(java.util.Map)" title="class or interface in java.util">putAll</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#remove(java.lang.Object)" title="class or interface in java.util">remove</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#size()" title="class or interface in java.util">size</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true#values()" title="class or interface in java.util">values</A></CODE></TD>
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<A NAME="removeRandom()"><!-- --></A><H3>
removeRandom</H3>
<PRE>
<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</A> <B>removeRandom</B>()</PRE>
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<DD>Remove an arbitrary(not strictly random) entry from the map. This
allows implementation of concurrent caches with size ceilings.
<P>
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<DT><B>Returns:</B><DD>the removed entry, or null if map is empty</DL>
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randomEntryIterator</H3>
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<A HREF="http://download.oracle.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</A> <B>randomEntryIterator</B>()</PRE>
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<DD>Iterate over map entries, beginning at an arbitrary
(not strictly random) entry.
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