001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.hivemind.methodmatch;
016    
017    import java.util.Iterator;
018    import java.util.List;
019    
020    import org.apache.hivemind.service.MethodSignature;
021    
022    /**
023     * Runs a suite of {@link org.apache.hivemind.methodmatch.MethodFilter}s, returning
024     * true only if each filter does. The tests short-circuit with the first filter
025     * to return false.
026     *
027     * @author Howard Lewis Ship
028     */
029    public class CompositeFilter extends MethodFilter
030    {
031        private List _filters;
032    
033        /**
034         * Creates a new composite filter; the list passed in is <em>retained not copied</em>
035         * and should not be changed futher by the caller.
036         * 
037         * @param filters {@link List} of {@link MethodFilter}.
038         */
039        public CompositeFilter(List filters)
040        {
041            _filters = filters;
042        }
043    
044        public boolean matchMethod(MethodSignature sig)
045        {
046            Iterator i = _filters.iterator();
047            while (i.hasNext())
048            {
049                MethodFilter mf = (MethodFilter) i.next();
050    
051                if (!mf.matchMethod(sig))
052                    return false;
053            }
054    
055            // All matches!
056    
057            return true;
058        }
059    
060    }