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
015package org.apache.hivemind.methodmatch;
016
017import java.util.Iterator;
018import java.util.List;
019
020import 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 */
029public 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}