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jsync.io is a non-blocking, event-driven networking framework for Java

There is a newer version: 1.10.13

/*
 * Copyright (c) 2011-2013 The original author or authors
 * ------------------------------------------------------
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 *
 *     The Eclipse Public License is available at
 *     http://www.eclipse.org/legal/epl-v10.html
 *
 *     The Apache License v2.0 is available at
 *     http://www.opensource.org/licenses/apache2.0.php
 *
 * You may elect to redistribute this code under either of these licenses.
 */

package io.jsync.eventbus.impl;

import io.jsync.buffer.Buffer;
import io.jsync.eventbus.Message;
import io.jsync.json.JsonArray;
import io.netty.util.CharsetUtil;

/**
 * @author Tim Fox
 */
class JsonArrayMessage extends BaseMessage {

    private byte[] encoded;

    JsonArrayMessage(boolean send, String address, JsonArray body) {
        super(send, address, body);
    }

    private JsonArrayMessage(JsonArrayMessage other) {
        super(other.send, other.address, other.body == null ? null : other.body.copy());
        this.replyAddress = other.replyAddress;
        this.bus = other.bus;
        this.sender = other.sender;
    }

    public JsonArrayMessage(Buffer readBuff) {
        super(readBuff);
    }

    @Override
    protected void readBody(int pos, Buffer readBuff) {
        boolean isNull = readBuff.getByte(pos) == (byte) 0;
        if (!isNull) {
            pos++;
            int strLength = readBuff.getInt(pos);
            pos += 4;
            byte[] bytes = readBuff.getBytes(pos, pos + strLength);
            String str = new String(bytes, CharsetUtil.UTF_8);
            body = new JsonArray(str);
        }
    }

    @Override
    protected void writeBody(Buffer buff) {
        if (body == null) {
            buff.appendByte((byte) 0);
        } else {
            buff.appendByte((byte) 1);
            buff.appendInt(encoded.length);
            buff.appendBytes(encoded);
        }
    }

    @Override
    protected int getBodyLength() {
        if (body == null) {
            return 1;
        } else {
            String strJson = body.encode();
            encoded = strJson.getBytes(CharsetUtil.UTF_8);
            return 1 + 4 + encoded.length;
        }
    }

    @Override
    protected Message copy() {
        return new JsonArrayMessage(this);
    }

    @Override
    protected byte type() {
        return MessageFactory.TYPE_JSON_ARRAY;
    }

}