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    
018    package org.apache.camel.component.netty;
019    
020    import java.io.IOException;
021    import java.io.InputStream;
022    import java.io.ObjectInput;
023    import java.io.ObjectInputStream;
024    
025    import org.apache.camel.Converter;
026    import org.apache.camel.Exchange;
027    import org.jboss.netty.buffer.ChannelBuffer;
028    import org.jboss.netty.buffer.ChannelBufferInputStream;
029    import org.jboss.netty.buffer.DynamicChannelBuffer;
030    
031    /**
032     * A set of converter methods for working with Netty types
033     *
034     * @version 
035     */
036    @Converter
037    public final class NettyConverter {
038    
039        private NettyConverter() {
040            //Utility Class
041        }
042    
043        @Converter
044        public static byte[] toByteArray(ChannelBuffer buffer) {
045            return buffer.array();
046        }
047    
048        @Converter
049        public static String toString(ChannelBuffer buffer, Exchange exchange) {
050            byte[] bytes = toByteArray(buffer);
051            // use type converter as it can handle encoding set on the Exchange
052            return exchange.getContext().getTypeConverter().convertTo(String.class, exchange, bytes);
053        }
054    
055        @Converter
056        public static InputStream toInputStream(ChannelBuffer buffer) {
057            return new ChannelBufferInputStream(buffer);
058        }
059    
060        @Converter
061        public static ObjectInput toObjectInput(ChannelBuffer buffer) throws IOException {
062            InputStream is = toInputStream(buffer);
063            return new ObjectInputStream(is);
064        }
065    
066        @Converter
067        public static ChannelBuffer toByteBuffer(byte[] bytes) {
068            ChannelBuffer buf = new DynamicChannelBuffer(bytes.length);
069    
070            buf.writeBytes(bytes);
071            return buf;
072        }
073    }