com.antsdb.saltedfish.server.mysql.packet.LongDataPacket.java Source code

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Here is the source code for com.antsdb.saltedfish.server.mysql.packet.LongDataPacket.java

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/*-------------------------------------------------------------------------------------------------
 _______ __   _ _______ _______ ______  ______
 |_____| | \  |    |    |______ |     \ |_____]
 |     | |  \_|    |    ______| |_____/ |_____]
    
 Copyright (c) 2016, antsdb.com and/or its affiliates. All rights reserved. *-xguo0<@
    
 This program is free software: you can redistribute it and/or modify it under the terms of the
 GNU Affero General Public License, version 3, as published by the Free Software Foundation.
    
 You should have received a copy of the GNU Affero General Public License along with this program.
 If not, see <https://www.gnu.org/licenses/agpl-3.0.txt>
-------------------------------------------------------------------------------------------------*/
package com.antsdb.saltedfish.server.mysql.packet;

import org.slf4j.Logger;

import com.antsdb.saltedfish.cpp.Bytes;
import com.antsdb.saltedfish.cpp.Unsafe;
import com.antsdb.saltedfish.server.mysql.MysqlPreparedStatement;
import com.antsdb.saltedfish.server.mysql.MysqlServerHandler;
import com.antsdb.saltedfish.server.mysql.util.BufferUtils;
import com.antsdb.saltedfish.sql.OrcaException;
import com.antsdb.saltedfish.util.UberUtil;

import io.netty.buffer.ByteBuf;

public class LongDataPacket extends RecievePacket {
    static Logger _log = UberUtil.getThisLogger();

    private ByteBuf content;

    public LongDataPacket(int command) {
        super(command);
    }

    @Override
    public void read(MysqlServerHandler handler, ByteBuf in) {
        this.content = in.readSlice(this.packetLength);
        content.retain();
    }

    public void read_(MysqlServerHandler handler) {
        try {
            read__(handler);
        } finally {
            this.content.release();
        }
    }

    public void read__(MysqlServerHandler handler) {
        int stmtId = BufferUtils.readLong(this.content);
        MysqlPreparedStatement pstmt = handler.getPrepared().get(stmtId);
        if (pstmt == null) {
            throw new OrcaException("prepared statement %d is not found", stmtId);
        }
        int paramId = BufferUtils.readInt(this.content);
        int dataLen = this.packetLength - 6;
        long pTargetData = Bytes.alloc(pstmt.getHeap(), dataLen);
        long pSourceData = this.content.memoryAddress() + this.content.readerIndex();
        Unsafe.copyMemory(pSourceData, pTargetData + 4, dataLen);
        pstmt.setParam(paramId, pTargetData);
    }
}