HSQLDB example source code file (RowOutputTextLog.java)

This example HSQLDB source code file (RowOutputTextLog.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 - HSQLDB tags/keywords

and, bytes_and, bytes_false, bytes_false, bytes_is, bytes_true, bytes_true, is, jdbc, math, mode_delete, mode_delete, mode_insert, rowoutputbase, rowoutputtextlog, sql, true

The HSQLDB RowOutputTextLog.java source code

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


package org.hsqldb.rowio;

import java.math.BigDecimal;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;

import org.hsqldb.CachedRow;
import org.hsqldb.Column;
import org.hsqldb.HsqlDateTime;
import org.hsqldb.lib.StringConverter;
import org.hsqldb.types.Binary;
import org.hsqldb.types.JavaObject;

/**
 * @author fredt@users
 * @since 1.7.2
 * @version 1.7.2
 */
public class RowOutputTextLog extends RowOutputBase {

    static final byte[]     BYTES_NULL  = "NULL".getBytes();
    static final byte[]     BYTES_TRUE  = "TRUE".getBytes();
    static final byte[]     BYTES_FALSE = "FALSE".getBytes();
    static final byte[]     BYTES_AND   = " AND ".getBytes();
    static final byte[]     BYTES_IS    = " IS ".getBytes();
    public static final int MODE_DELETE = 1;
    public static final int MODE_INSERT = 0;
    private boolean         isWritten;
    private int             logMode;

    public void setMode(int mode) {
        logMode = mode;
    }

    protected void writeFieldPrefix() {

        if (logMode == MODE_DELETE && isWritten) {
            write(BYTES_AND);
        }
    }

    protected void writeChar(String s, int t) {

        write('\'');
        StringConverter.unicodeToAscii(this, s, true);
        write('\'');
    }

    protected void writeReal(Double o, int type) {
        writeBytes(Column.createSQLString(((Number) o).doubleValue()));
    }

    protected void writeSmallint(Number o) {
        this.writeBytes(o.toString());
    }

    public void writeEnd() {}

    protected void writeTime(Time o) {

        write('\'');
        writeBytes(o.toString());
        write('\'');
    }

    protected void writeBinary(Binary o, int t) {

        ensureRoom(o.getBytesLength() * 2 + 2);
        write('\'');
        StringConverter.writeHex(getBuffer(), count, o.getBytes());

        count += o.getBytesLength() * 2;

        write('\'');
    }

    public void writeType(int type) {}

    public void writeSize(int size) {}

    protected void writeDate(Date o) {

        write('\'');
        this.writeBytes(o.toString());
        write('\'');
    }

    public int getSize(CachedRow row) {
        return 0;
    }

    protected void writeInteger(Number o) {
        this.writeBytes(o.toString());
    }

    protected void writeBigint(Number o) {
        this.writeBytes(o.toString());
    }

//fredt@users - patch 1108647 by nkowalcz@users (NataliaK) fix for IS NULL
    protected void writeNull(int type) {

        if (logMode == MODE_DELETE) {
            write(BYTES_IS);
        } else if (isWritten) {
            write(',');
        }

        isWritten = true;

        write(BYTES_NULL);
    }

    protected void writeOther(JavaObject o) {

        ensureRoom(o.getBytesLength() * 2 + 2);
        write('\'');
        StringConverter.writeHex(getBuffer(), count, o.getBytes());

        count += o.getBytesLength() * 2;

        write('\'');
    }

    public void writeString(String value) {
        StringConverter.unicodeToAscii(this, value, false);
    }

    protected void writeBit(Boolean o) {
        write(o.booleanValue() ? BYTES_TRUE
                               : BYTES_FALSE);
    }

    protected void writeDecimal(BigDecimal o) {
        this.writeBytes(o.toString());
    }

    protected void writeFieldType(int type) {

        if (logMode == MODE_DELETE) {
            write('=');
        } else if (isWritten) {
            write(',');
        }

        isWritten = true;
    }

    public void writeLongData(long value) {
        this.writeBytes(Long.toString(value));
    }

    public void writeIntData(int i, int position) {}

    protected void writeTimestamp(Timestamp o) {

        write('\'');
        this.writeBytes(HsqlDateTime.getTimestampString(o));
        write('\'');
    }

    public void writeShortData(short i) {
        writeBytes(Integer.toString(i));
    }

    public void writeIntData(int i) {
        writeBytes(Integer.toString(i));
    }

    public void reset() {

        super.reset();

        isWritten = false;
    }
}