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.activemq.transport.util; 018 019 import java.io.DataInput; 020 import java.io.DataInputStream; 021 import java.io.DataOutput; 022 import java.io.DataOutputStream; 023 import java.io.IOException; 024 import java.io.Reader; 025 import org.apache.activemq.util.ByteArrayInputStream; 026 import org.apache.activemq.util.ByteArrayOutputStream; 027 import org.apache.activemq.util.ByteSequence; 028 import org.apache.activemq.wireformat.WireFormat; 029 030 /** 031 * Adds the extra methods available to text based wire format implementations 032 * 033 * @version $Revision: 1.1 $ 034 */ 035 public abstract class TextWireFormat implements WireFormat { 036 037 public abstract Object unmarshalText(String text); 038 039 public abstract Object unmarshalText(Reader reader); 040 041 public abstract String marshalText(Object command); 042 043 public void marshal(Object command, DataOutput out) throws IOException { 044 out.writeUTF(marshalText(command)); 045 } 046 047 public Object unmarshal(DataInput in) throws IOException { 048 String text = in.readUTF(); 049 return unmarshalText(text); 050 } 051 052 public ByteSequence marshal(Object command) throws IOException { 053 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 054 DataOutputStream dos = new DataOutputStream(baos); 055 marshal(command, dos); 056 dos.close(); 057 return baos.toByteSequence(); 058 } 059 060 public Object unmarshal(ByteSequence packet) throws IOException { 061 ByteArrayInputStream stream = new ByteArrayInputStream(packet); 062 DataInputStream dis = new DataInputStream(stream); 063 return unmarshal(dis); 064 } 065 066 public boolean inReceive() { 067 // TODO Implement for inactivity monitor 068 return false; 069 } 070 071 }