/*
 * Copyright (c) 2000, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

/*
 * @(#)TextMessageImpl.java	1.14 06/27/07
 */

package com.sun.messaging.jmq.jmsclient;

import java.io.*;
import javax.jms.*;

import com.sun.messaging.AdministeredObject;
import com.sun.messaging.jmq.io.PacketType;

/**
 * A TextMessage is used to send a message containing a <CODE>java.lang.String</CODE>. It inherits from
 * <CODE>Message</CODE> and adds a text message body.
 *
 * <P>
 * The inclusion of this message type is based on our presumption that XML will likely become a popular mechanism for
 * representing content of all kinds including the content of JMS messages.
 *
 * <P>
 * When a client receives a TextMessage, it is in read-only mode. If a client attempts to write to the message at this
 * point, a MessageNotWriteableException is thrown. If <CODE>clearBody</CODE> is called, the message can now be both
 * read from and written to.
 *
 * @see javax.jms.Session#createTextMessage()
 * @see javax.jms.Session#createTextMessage(String)
 * @see javax.jms.BytesMessage
 * @see javax.jms.MapMessage
 * @see javax.jms.Message
 * @see javax.jms.ObjectMessage
 * @see javax.jms.StreamMessage
 * @see java.lang.String
 */

public class TextMessageImpl extends MessageImpl implements TextMessage {

    private String text = null;

    // serialize message body
    // This is called when producing messages.
    @Override
    protected void setMessageBodyToPacket() throws JMSException {

        // ObjectOutputStream oos;
        if (text == null) {
            return;
        }
        try {
            setMessageBody(text.getBytes(UTF8));
        } catch (Exception e) {
            ExceptionHandler.handleException(e, AdministeredObject.cr.X_MESSAGE_SERIALIZE);
        }

    }

    // deserialize message body
    // This is called after message is received
    @Override
    protected void getMessageBodyFromPacket() throws JMSException {

        // InputStream is = getMessageBodyStream();
        // ObjectInputStream ois = new ObjectInputStream (is);
        // text = (String) ois.readObject();

        try {
            byte[] body = getMessageBody();
            if (body != null) {
                text = new String(body, UTF8);
            }
        } catch (Exception e) {
            ExceptionHandler.handleException(e, AdministeredObject.cr.X_MESSAGE_DESERIALIZE);
        }
    }

    /**
     * Constructor.
     */
    protected TextMessageImpl() throws JMSException {
        super();
        setPacketType(PacketType.TEXT_MESSAGE);
    }

    /**
     * clear body
     */
    @Override
    public void clearBody() throws JMSException {
        text = null;
        setMessageReadMode(false);
    }

    /**
     * Set the string containing this message's data.
     *
     * @param string the String containing the message's data
     *
     * @exception JMSException if JMS fails to set text due to some internal JMS error.
     * @exception MessageNotWriteableException if message in read-only mode.
     */

    @Override
    public void setText(String string) throws JMSException {
        checkMessageAccess();
        text = string;
    }

    /**
     * Get the string containing this message's data. The default value is null.
     *
     * @return the String containing the message's data
     *
     * @exception JMSException if JMS fails to get text due to some internal JMS error.
     */

    @Override
    public String getText() throws JMSException {
        return text;
    }

    @Override
    public String toString() {
        return new StringBuffer().append("\nText:\t").append(text).append(super.toString()).toString();
    }

    @Override
    public void dump(PrintStream ps) {
        ps.println("------ TextMessageImpl dump ------");
        super.dump(ps);
    }
}
