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HSQLDB example source code file (RowInputBinary.java)
The HSQLDB RowInputBinary.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.io.IOException; import java.math.BigDecimal; import java.math.BigInteger; import java.sql.Date; import java.sql.Time; import java.sql.Timestamp; import org.hsqldb.HsqlDateTime; import org.hsqldb.HsqlException; import org.hsqldb.lib.StringConverter; import org.hsqldb.store.ValuePool; import org.hsqldb.types.Binary; import org.hsqldb.types.JavaObject; /** * Provides methods for reading the data for a row from a * byte array. The format of data is that used for storage of cached * tables by v.1.6.x databases, apart from strings. * * @author sqlbob@users (RMP) * @author fredt@users * @version 1.7.2 * @since 1.7.0 */ public class RowInputBinary extends RowInputBase implements org.hsqldb.rowio.RowInputInterface { private RowOutputBinary out; public RowInputBinary() { super(); } public RowInputBinary(byte[] buf) { super(buf); } /** * uses the byte[] buffer from out. At each reset, the buffer is set * to the current one for out. */ public RowInputBinary(RowOutputBinary out) { super(out.getBuffer()); this.out = out; } protected byte[] readByteArray() throws IOException { byte[] b = new byte[readInt()]; readFully(b); return b; } public int readType() throws IOException { return readShort(); } public short readShortData() throws IOException { return readShort(); } public int readIntData() throws IOException { return readInt(); } public long readLongData() throws IOException { return readLong(); } public String readString() throws IOException { int length = readInt(); String s = StringConverter.readUTF(buffer, pos, length); s = ValuePool.getString(s); pos += length; return s; } protected boolean checkNull() throws IOException { int b = readByte(); return b == 0 ? true : false; } protected String readChar(int type) throws IOException { return readString(); } protected Integer readSmallint() throws IOException, HsqlException { return ValuePool.getInt(readShort()); } protected Integer readInteger() throws IOException, HsqlException { return ValuePool.getInt(readInt()); } protected Long readBigint() throws IOException, HsqlException { return ValuePool.getLong(readLong()); } protected Double readReal(int type) throws IOException, HsqlException { return ValuePool.getDouble(readLong()); } protected BigDecimal readDecimal() throws IOException, HsqlException { byte[] bytes = readByteArray(); int scale = readInt(); BigInteger bigint = new BigInteger(bytes); return ValuePool.getBigDecimal(new BigDecimal(bigint, scale)); } protected Boolean readBit() throws IOException, HsqlException { return readBoolean() ? Boolean.TRUE : Boolean.FALSE; } protected Time readTime() throws IOException, HsqlException { return new Time(HsqlDateTime.getNormalisedTime(readLong())); } protected Date readDate() throws IOException, HsqlException { long date = HsqlDateTime.getNormalisedDate(readLong()); return ValuePool.getDate(date); } protected Timestamp readTimestamp() throws IOException, HsqlException { return HsqlDateTime.timestampValue(readLong(), readInt()); } protected Object readOther() throws IOException, HsqlException { return new JavaObject(readByteArray()); } protected Binary readBinary(int type) throws IOException, HsqlException { return new Binary(readByteArray(), false); } /** * Used to reset the row, ready for Result data to be written into the * byte[] buffer by an external routine. * */ public void resetRow(int rowsize) { if (out != null) { out.reset(rowsize); buffer = out.getBuffer(); } super.reset(); } /** * Used to reset the row, ready for a new db row to be written into the * byte[] buffer by an external routine. * */ public void resetRow(int filepos, int rowsize) throws IOException { if (out != null) { out.reset(rowsize); buffer = out.getBuffer(); } super.resetRow(filepos, rowsize); } } Other HSQLDB examples (source code examples)Here is a short list of links related to this HSQLDB RowInputBinary.java source code file: |
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