Message.java

/*
 * Copyright 2011 Chad Retz
 * 
 * Licensed 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.gwtnode.dev.debug.message;

import org.gwtnode.core.node.buffer.Buffer;

/**
 * @author Chad Retz
 */
public abstract class Message {

    protected final MessageType type;
    protected int length = 0;
    
    public Message(MessageType type) {
        this.type = type;
        length += 1;
    }
    
    public MessageType getType() {
        return type;
    }
    
    public int getLength() {
        return length;
    }
    
    public abstract String toString();
    
    public abstract Buffer toBuffer();
    
    protected StringBuilder toString(StringBuilder builder) {
        return builder.append(type).append(" - ");
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + length;
        result = prime * result + ((type == null) ? 0 : type.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        Message other = (Message) obj;
        if (length != other.length) {
            return false;
        }
        if (type != other.type) {
            return false;
        }
        return true;
    }
}