Initial commit from SVN.

Common/src/com/common/util/EmptyIterator.java

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+/*
+ * Copyright (c) 2005,2008 Declarative Engineering LLC.
+ * All rights reserved.  This program and the accompanying materials
+ * are made available under the terms of the Declarative Engineering LLC
+ * verson 1 which accompanies this distribution, and is available at
+ * http://declarativeengineering.com/legal/DE_Developer_License_v1.txt
+ */
+package com.common.util;
+
+/*
+ * A simple empty iterator singleton.
+ */
+public final class EmptyIterator implements IIterator {
+	/** The one and only empty iterator object. */
+	private static EmptyIterator singleton = new EmptyIterator();
+/**
+ * Gets the single instance of this iterator.
+ * @return The one and only empty iterator object.
+ */
+public static IIterator getSingleton() {
+	return singleton;
+}//getSingleton()//
+/**
+ * EmptyIterator constructor.
+ */
+private EmptyIterator() {
+}//EmptyIterator()//
+/* (non-Javadoc)
+ * @see com.common.util.IIterator#hasNext()
+ */
+public boolean hasNext() {
+	return false;
+}//hasNext()//
+/* (non-Javadoc)
+ * @see com.common.util.IIterator#next()
+ */
+public Object next() {
+	throw new IndexOutOfBoundsException("Empty iterator.");
+}//next()//
+/* (non-Javadoc)
+ * @see com.common.util.IIterator#remove()
+ */
+public boolean remove() {
+	return false;
+}//remove()//
+/* (non-Javadoc)
+ * @see com.common.util.IIterator#resetToFront()
+ */
+public void resetToFront() {
+}//resetToFront()//
+}//EmptyIterator//