[jboss-svn-commits] JBoss Common SVN: r4028 - in common-core/trunk/src: test/java/org/jboss/test/util/test/collection and 1 other directory.

[jboss-svn-commits at lists.jboss.org]

Author: alesj
Date: 2010-02-10 06:17:23 -0500 (Wed, 10 Feb 2010)
New Revision: 4028

Added:
   common-core/trunk/src/main/java/org/jboss/util/collection/FastCopyHashSet.java
   common-core/trunk/src/test/java/org/jboss/test/util/test/collection/FastCopyHashSetUnitTestCase.java
Log:
[JBCOMMON-105]; add FastCopyHashSet.

Copied: common-core/trunk/src/main/java/org/jboss/util/collection/FastCopyHashSet.java (from rev 4027, common-core/trunk/src/main/java/org/jboss/util/collection/ConcurrentSet.java)
===================================================================
--- common-core/trunk/src/main/java/org/jboss/util/collection/FastCopyHashSet.java	                        (rev 0)
+++ common-core/trunk/src/main/java/org/jboss/util/collection/FastCopyHashSet.java	2010-02-10 11:17:23 UTC (rev 4028)
@@ -0,0 +1,93 @@
+/*
+* JBoss, Home of Professional Open Source
+* Copyright 2006, JBoss Inc., and individual contributors as indicated
+* by the @authors tag. See the copyright.txt in the distribution for a
+* full listing of individual contributors.
+*
+* This is free software; you can redistribute it and/or modify it
+* under the terms of the GNU Lesser General Public License as
+* published by the Free Software Foundation; either version 2.1 of
+* the License, or (at your option) any later version.
+*
+* This software is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this software; if not, write to the Free
+* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+*/
+package org.jboss.util.collection;
+
+import java.io.Serializable;
+import java.util.Collection;
+
+/**
+ * Concurrent Set based on top of FastCopyHashMap.
+ * It's serializable if the elements are serializable.
+ *
+ * @param <E> the element type
+ * @author <a href="ales.justin at jboss.org">Ales Justin</a>
+ */
+public class FastCopyHashSet<E> extends MapDelegateSet<E> implements Serializable
+{
+   /** The serialVersionUID */
+   private static final long serialVersionUID = 1L;
+
+   /**
+    * Constructs a new, empty set; the backing <tt>FastCopyHashMap</tt> instance has
+    * default initial capacity (16) and load factor (0.75).
+    */
+   public FastCopyHashSet()
+   {
+      super(new FastCopyHashMap<E, Object>());
+   }
+
+   /**
+    * Constructs a new set containing the elements in the specified
+    * collection.  The <tt>FastCopyHashMap</tt> is created with default load factor
+    * (0.75) and an initial capacity sufficient to contain the elements in
+    * the specified collection.
+    *
+    * @param c the collection whose elements are to be placed into this set.
+    * @throws NullPointerException if the specified collection is null.
+    */
+   public FastCopyHashSet(Collection<? extends E> c)
+   {
+      super(new FastCopyHashMap<E, Object>(Math.max((int)(c.size() / .75f) + 1, 16)));
+      addAll(c);
+   }
+
+   /**
+    * Constructs a new, empty set; the backing <tt>FastCopyHashMap</tt> instance has
+    * the specified initial capacity and the specified load factor.
+    *
+    * @param initialCapacity  the initial capacity. The implementation
+    *                         performs internal sizing to accommodate this many elements.
+    * @param loadFactor       the load factor threshold, used to control resizing.
+    *                         Resizing may be performed when the average number of elements per
+    *                         bin exceeds this threshold.
+    * @throws IllegalArgumentException if the initial capacity is less
+    *                                  than zero, or if the load factor is nonpositive.
+    */
+   public FastCopyHashSet(int initialCapacity, float loadFactor)
+   {
+      super(new FastCopyHashMap<E, Object>(initialCapacity, loadFactor));
+   }
+
+   /**
+    * Constructs a new, empty set; the backing <tt>FastCopyHashMap</tt> instance has
+    * the specified initial capacity and default load factor, which is
+    * <tt>0.75</tt>.
+    *
+    * @param initialCapacity the initial capacity of the hash table.
+    * @throws IllegalArgumentException if the initial capacity is less
+    *                                  than zero.
+    */
+   public FastCopyHashSet(int initialCapacity)
+   {
+      super(new FastCopyHashMap<E, Object>(initialCapacity));
+   }
+}
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Property changes on: common-core/trunk/src/main/java/org/jboss/util/collection/FastCopyHashSet.java
___________________________________________________________________
Name: svn:keywords
   + Author Date Id Revision
Name: svn:eol-style
   + native

Copied: common-core/trunk/src/test/java/org/jboss/test/util/test/collection/FastCopyHashSetUnitTestCase.java (from rev 4027, common-core/trunk/src/test/java/org/jboss/test/util/test/collection/ConcurrentSetUnitTestCase.java)
===================================================================
--- common-core/trunk/src/test/java/org/jboss/test/util/test/collection/FastCopyHashSetUnitTestCase.java	                        (rev 0)
+++ common-core/trunk/src/test/java/org/jboss/test/util/test/collection/FastCopyHashSetUnitTestCase.java	2010-02-10 11:17:23 UTC (rev 4028)
@@ -0,0 +1,20 @@
+package org.jboss.test.util.test.collection;
+
+import org.jboss.util.collection.ConcurrentSet;
+import org.jboss.util.collection.FastCopyHashSet;
+
+import java.util.Set;
+
+/**
+ * Unit tests for FastCopyHashSet
+ *
+ * @author <a href="mailto:ales.justin at jboss.org">Ales Justin</a>
+ */
+ at SuppressWarnings("unchecked")
+public class FastCopyHashSetUnitTestCase extends AbstractSetUnitTest
+{
+   protected Set createSet()
+   {
+      return new FastCopyHashSet();
+   }
+}
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