001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.commons.collections.primitives.adapters;
018    
019    import java.util.Iterator;
020    
021    import org.apache.commons.collections.primitives.FloatIterator;
022    
023    /**
024     * Adapts a {@link java.lang.Number Number}-valued 
025     * {@link Iterator Iterator} 
026     * to the {@link FloatIterator FloatIterator} 
027     * interface.
028     * <p />
029     * This implementation delegates most methods
030     * to the provided {@link Iterator Iterator} 
031     * implementation in the "obvious" way.
032     *
033     * @since Commons Primitives 1.0
034     * @version $Revision: 480462 $ $Date: 2006-11-29 09:15:00 +0100 (Wed, 29 Nov 2006) $
035     * @author Rodney Waldhoff 
036     */
037    public class IteratorFloatIterator implements FloatIterator {
038        
039        /**
040         * Create an {@link FloatIterator FloatIterator} wrapping
041         * the specified {@link Iterator Iterator}.  When
042         * the given <i>iterator</i> is <code>null</code>,
043         * returns <code>null</code>.
044         * 
045         * @param iterator the (possibly <code>null</code>) 
046         *        {@link Iterator Iterator} to wrap
047         * @return an {@link FloatIterator FloatIterator} wrapping the given 
048         *         <i>iterator</i>, or <code>null</code> when <i>iterator</i> is
049         *         <code>null</code>.
050         */
051        public static FloatIterator wrap(Iterator iterator) {
052            return null == iterator ? null : new IteratorFloatIterator(iterator);
053        }
054       
055        /**
056         * Creates an {@link FloatIterator FloatIterator} wrapping
057         * the specified {@link Iterator Iterator}.
058         * @see #wrap
059         */
060        public IteratorFloatIterator(Iterator iterator) {
061            _iterator = iterator;
062        }
063        
064        public boolean hasNext() {
065            return _iterator.hasNext();
066        }
067        
068        public float next() {
069            return ((Number)(_iterator.next())).floatValue();
070        }
071        
072        public void remove() {
073            _iterator.remove();
074        }
075        
076        private Iterator _iterator = null;
077    
078    }