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Diffstat (limited to 'src/org/jivesoftware/smack/util/collections/EmptyIterator.java')
-rw-r--r-- | src/org/jivesoftware/smack/util/collections/EmptyIterator.java | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smack/util/collections/EmptyIterator.java b/src/org/jivesoftware/smack/util/collections/EmptyIterator.java new file mode 100644 index 0000000..6a8707f --- /dev/null +++ b/src/org/jivesoftware/smack/util/collections/EmptyIterator.java @@ -0,0 +1,58 @@ +// GenericsNote: Converted. +/* + * Copyright 2004 The Apache Software Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.jivesoftware.smack.util.collections; + +import java.util.Iterator; + +/** + * Provides an implementation of an empty iterator. + * <p/> + * This class provides an implementation of an empty iterator. + * This class provides for binary compatability between Commons Collections + * 2.1.1 and 3.1 due to issues with <code>IteratorUtils</code>. + * + * @author Matt Hall, John Watkinson, Stephen Colebourne + * @version $Revision: 1.1 $ $Date: 2005/10/11 17:05:24 $ + * @since Commons Collections 2.1.1 and 3.1 + */ +public class EmptyIterator <E> extends AbstractEmptyIterator<E> implements ResettableIterator<E> { + + /** + * Singleton instance of the iterator. + * + * @since Commons Collections 3.1 + */ + public static final ResettableIterator RESETTABLE_INSTANCE = new EmptyIterator(); + /** + * Singleton instance of the iterator. + * + * @since Commons Collections 2.1.1 and 3.1 + */ + public static final Iterator INSTANCE = RESETTABLE_INSTANCE; + + public static <T> Iterator<T> getInstance() { + return INSTANCE; + } + + /** + * Constructor. + */ + protected EmptyIterator() { + super(); + } + +} |