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.camel.component.directvm;
018    
019    import java.util.ArrayList;
020    import java.util.Collection;
021    
022    import org.apache.camel.Endpoint;
023    import org.apache.camel.Exchange;
024    import org.apache.camel.support.ExpressionAdapter;
025    import org.apache.camel.util.AntPathMatcher;
026    
027    /**
028     * The expression to select direct-vm consumers based on ant-like path pattern matching.
029     */
030    public class DirectVmConsumerExpression extends ExpressionAdapter {
031    
032        private final AntPathMatcher matcher;
033        private final String pattern;
034    
035        public DirectVmConsumerExpression(String pattern) {
036            this.matcher = new AntPathMatcher();
037            this.pattern = pattern;
038        }
039    
040        @Override
041        public Object evaluate(Exchange exchange) {
042            Collection<Endpoint> endpoints = new ArrayList<Endpoint>();
043            for (Endpoint endpoint : DirectVmComponent.getConsumerEndpoints()) {
044                if (matcher.match(pattern, endpoint.getEndpointKey())) {
045                    endpoints.add(endpoint);
046                }
047            }
048            return endpoints;
049        }
050    
051        @Override
052        public String toString() {
053            return "DirectVmConsumerExpression[" + pattern + "]";
054        }
055    }