ActiveMQ example source code file (TextWireFormat.java)

This example ActiveMQ source code file (TextWireFormat.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

bytearrayinputstream, bytearrayoutputstream, bytesequence, datainputstream, dataoutputstream, io, ioexception, ioexception, object, object, string, string, textwireformat, utf-8, utf-8

The ActiveMQ TextWireFormat.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.activemq.transport.util;

import java.io.DataInput;
import java.io.DataInputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.Reader;
import org.apache.activemq.util.ByteArrayInputStream;
import org.apache.activemq.util.ByteArrayOutputStream;
import org.apache.activemq.util.ByteSequence;
import org.apache.activemq.wireformat.WireFormat;

/**
 * Adds the extra methods available to text based wire format implementations
 * 
 * 
 */
public abstract class TextWireFormat implements WireFormat {

    public abstract Object unmarshalText(String text);

    public abstract Object unmarshalText(Reader reader);

    public abstract String marshalText(Object command);

    public void marshal(Object command, DataOutput out) throws IOException {
        String text = marshalText(command);
        byte[] utf8 = text.getBytes("UTF-8");
        out.writeInt(utf8.length);
        out.write(utf8);
    }

    public Object unmarshal(DataInput in) throws IOException {
        int length = in.readInt();
        byte[] utf8 = new byte[length];
        in.readFully(utf8);
        String text = new String(utf8, "UTF-8");
        return unmarshalText(text);
    }

    public ByteSequence marshal(Object command) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(baos);
        marshal(command, dos);
        dos.close();
        return baos.toByteSequence();
    }

    public Object unmarshal(ByteSequence packet) throws IOException {
        ByteArrayInputStream stream = new ByteArrayInputStream(packet);
        DataInputStream dis = new DataInputStream(stream);
        return unmarshal(dis);
    }

    public boolean inReceive() {
        // TODO Implement for inactivity monitor
        return false;
    }

}