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ActiveMQ example source code file (StompFrame.java)

This example ActiveMQ source code file (StompFrame.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

command, endpoint, io, iterator, map, map, no_data, response, stompframe, stompframe, string, string, stringbuffer, utf-8, utf-8, util

The ActiveMQ StompFrame.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.stomp;

import java.io.UnsupportedEncodingException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.activemq.command.Command;
import org.apache.activemq.command.Endpoint;
import org.apache.activemq.command.Response;
import org.apache.activemq.state.CommandVisitor;
import org.apache.activemq.util.MarshallingSupport;

/**
 * Represents all the data in a STOMP frame.
 *
 * @author <a href="http://hiramchirino.com">chirino
 */
public class StompFrame implements Command {

    public static final byte[] NO_DATA = new byte[] {};

    private String action;
    private Map<String, String> headers = new HashMap();
    private byte[] content = NO_DATA;

    public StompFrame(String command) {
        this(command, null, null);
    }

    public StompFrame(String command, Map<String, String> headers) {
        this(command, headers, null);
    }

    public StompFrame(String command, Map<String, String> headers, byte[] data) {
        this.action = command;
        if (headers != null)
            this.headers = headers;
        if (data != null)
            this.content = data;
    }

    public StompFrame() {
    }

    public String getAction() {
        return action;
    }

    public void setAction(String command) {
        this.action = command;
    }

    public byte[] getContent() {
        return content;
    }

    public String getBody() {
        try {
            return new String(content, "UTF-8");
        } catch (UnsupportedEncodingException e) {
            return new String(content);
        }
    }

    public void setContent(byte[] data) {
        this.content = data;
    }

    public Map<String, String> getHeaders() {
        return headers;
    }

    public void setHeaders(Map<String, String> headers) {
        this.headers = headers;
    }

    //
    // Methods in the Command interface
    //
    public int getCommandId() {
        return 0;
    }

    public Endpoint getFrom() {
        return null;
    }

    public Endpoint getTo() {
        return null;
    }

    public boolean isBrokerInfo() {
        return false;
    }

    public boolean isMessage() {
        return false;
    }

    public boolean isMessageAck() {
        return false;
    }

    public boolean isMessageDispatch() {
        return false;
    }

    public boolean isMessageDispatchNotification() {
        return false;
    }

    public boolean isResponse() {
        return false;
    }

    public boolean isResponseRequired() {
        return false;
    }

    public boolean isShutdownInfo() {
        return false;
    }

    public boolean isConnectionControl() {
        return false;
    }

    public boolean isWireFormatInfo() {
        return false;
    }

    public void setCommandId(int value) {
    }

    public void setFrom(Endpoint from) {
    }

    public void setResponseRequired(boolean responseRequired) {
    }

    public void setTo(Endpoint to) {
    }

    public Response visit(CommandVisitor visitor) throws Exception {
        return null;
    }

    public byte getDataStructureType() {
        return 0;
    }

    public boolean isMarshallAware() {
        return false;
    }

    public String toString() {
        return format(true);
    }

    public String format() {
        return format(false);
    }

    public String format(boolean forLogging) {
        StringBuffer buffer = new StringBuffer();
        buffer.append(getAction());
        buffer.append("\n");
        Map headers = getHeaders();
        for (Iterator iter = headers.entrySet().iterator(); iter.hasNext();) {
            Map.Entry entry = (Map.Entry)iter.next();
            buffer.append(entry.getKey());
            buffer.append(":");
            if (forLogging && entry.getKey().toString().toLowerCase().contains(Stomp.Headers.Connect.PASSCODE)) {
                buffer.append("*****");
            } else {
                buffer.append(entry.getValue());
            }
            buffer.append("\n");
        }
        buffer.append("\n");
        if (getContent() != null) {
            try {
                String contentString = new String(getContent(), "UTF-8");
                if (forLogging) {
                    contentString = MarshallingSupport.truncate64(contentString);
                }
                buffer.append(contentString);
            } catch (Throwable e) {
                buffer.append(Arrays.toString(getContent()));
            }
        }
        return buffer.toString();
    }
}

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