001: /*
002: * $Header: /home/cvs/jakarta-commons/primitives/src/java/org/apache/commons/collections/primitives/adapters/CollectionIntCollection.java,v 1.3 2003/10/16 20:49:38 scolebourne Exp $
003: * ====================================================================
004: * The Apache Software License, Version 1.1
005: *
006: * Copyright (c) 2003 The Apache Software Foundation. All rights
007: * reserved.
008: *
009: * Redistribution and use in source and binary forms, with or without
010: * modification, are permitted provided that the following conditions
011: * are met:
012: *
013: * 1. Redistributions of source code must retain the above copyright
014: * notice, this list of conditions and the following disclaimer.
015: *
016: * 2. Redistributions in binary form must reproduce the above copyright
017: * notice, this list of conditions and the following disclaimer in
018: * the documentation and/or other materials provided with the
019: * distribution.
020: *
021: * 3. The end-user documentation included with the redistribution, if
022: * any, must include the following acknowledgement:
023: * "This product includes software developed by the
024: * Apache Software Foundation (http://www.apache.org/)."
025: * Alternately, this acknowledgement may appear in the software itself,
026: * if and wherever such third-party acknowledgements normally appear.
027: *
028: * 4. The names "The Jakarta Project", "Commons", and "Apache Software
029: * Foundation" must not be used to endorse or promote products derived
030: * from this software without prior written permission. For written
031: * permission, please contact apache@apache.org.
032: *
033: * 5. Products derived from this software may not be called "Apache"
034: * nor may "Apache" appear in their names without prior written
035: * permission of the Apache Software Foundation.
036: *
037: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
038: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
039: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
040: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
041: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
042: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
043: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
044: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
045: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
046: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
047: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
048: * SUCH DAMAGE.
049: * ====================================================================
050: *
051: * This software consists of voluntary contributions made by many
052: * individuals on behalf of the Apache Software Foundation. For more
053: * information on the Apache Software Foundation, please see
054: * <http://www.apache.org/>.
055: *
056: */
057:
058: package org.apache.commons.collections.primitives.adapters;
059:
060: import java.io.Serializable;
061: import java.util.Collection;
062:
063: import org.apache.commons.collections.primitives.IntCollection;
064:
065: /**
066: * Adapts a {@link java.lang.Number Number}-valued
067: * {@link java.util.Collection Collection} to the
068: * {@link IntCollection IntCollection} interface.
069: * <p />
070: * This implementation delegates most methods
071: * to the provided {@link Collection Collection}
072: * implementation in the "obvious" way.
073: *
074: * @since Commons Primitives 1.0
075: * @version $Revision: 1.3 $ $Date: 2003/10/16 20:49:38 $
076: * @author Rodney Waldhoff
077: */
078: final public class CollectionIntCollection extends
079: AbstractCollectionIntCollection implements Serializable {
080: /**
081: * Create an {@link IntCollection IntCollection} wrapping
082: * the specified {@link Collection Collection}. When
083: * the given <i>collection</i> is <code>null</code>,
084: * returns <code>null</code>.
085: *
086: * @param collection the (possibly <code>null</code>) {@link Collection} to wrap
087: * @return an {@link IntCollection IntCollection} wrapping the given
088: * <i>collection</i>, or <code>null</code> when <i>collection</i> is
089: * <code>null</code>.
090: */
091: public static IntCollection wrap(Collection collection) {
092: if (null == collection) {
093: return null;
094: } else if (collection instanceof Serializable) {
095: return new CollectionIntCollection(collection);
096: } else {
097: return new NonSerializableCollectionIntCollection(
098: collection);
099: }
100: }
101:
102: /**
103: * Creates an {@link IntCollection IntCollection} wrapping
104: * the specified {@link Collection Collection}.
105: * @see #wrap
106: */
107: public CollectionIntCollection(Collection collection) {
108: _collection = collection;
109: }
110:
111: protected Collection getCollection() {
112: return _collection;
113: }
114:
115: private Collection _collection = null;
116: }
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