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.cxf.common.header;
018    
019    import java.util.List;
020    
021    import org.apache.camel.spi.HeaderFilterStrategy.Direction;
022    import org.apache.cxf.headers.Header;
023    
024    /**
025     * Filter the wire message headers from one CXF endpoint to another CXF endpoint
026     */
027    public interface MessageHeaderFilter {
028    
029        /**
030         * @return a list of binding name spaces that this relay can service
031         */
032        List<String> getActivationNamespaces();
033    
034        /**
035         *  This method filters (removes) headers from the given header list. 
036         *  <i>Out</i> direction refers to processing headers from a Camel message to an 
037         *  CXF message.  <i>In</i> direction is the reverse direction.
038         *  
039         *  @param direction the direction of the processing
040         *  @param headers the origin list of headers
041         */
042        void filter(Direction direction, List<Header> headers);
043    
044    }