/* Copyright (c) 2001-2018, 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;
import java.io.
IOException;
import org.hsqldb.persist.
PersistentStore;
import org.hsqldb.rowio.
RowInputBinary;
import org.hsqldb.rowio.
RowInputInterface;
import org.hsqldb.rowio.
RowOutputBinary;
import org.hsqldb.rowio.
RowOutputInterface;
import org.hsqldb.types.
ArrayType;
import org.hsqldb.types.
Type;
/**
* @author Fred Toussi (fredt@users dot sourceforge dot net)
* @version 2.3.5
* @since 2.2.7
*/
public class
RowDiskDataChange extends
RowAVLDisk {
public static final int
COL_POS_ROW_NUM = 0;
public static final int
COL_POS_ROW_ID = 1;
public static final int
COL_POS_TABLE_ID = 2;
public static final int
COL_POS_SCHEMA_NAME = 3;
public static final int
COL_POS_TABLE_NAME = 4;
public static final int
COL_POS_IS_UPDATE = 5;
//
static final
Type[]
arrayType = new
Type[]{
new
ArrayType(
Type.
SQL_INTEGER,
Integer.
MAX_VALUE) };
Table targetTable;
Object[]
updateData;
int[]
updateColMap;
/**
* Constructor for new Rows. Variable hasDataChanged is set to true in
* order to indicate the data needs saving.
*
* @param t table
* @param data row data
*/
public
RowDiskDataChange(
TableBase t,
Object[]
data,
PersistentStore store,
Table targetTable) {
super(
t,
data,
store);
this.
targetTable =
targetTable;
}
/**
* Constructor when read from the disk into the Cache.
*
* @param t table
* @param in data source
* @throws IOException
*/
public
RowDiskDataChange(
Session session,
PersistentStore store,
RowInputInterface in) throws
IOException {
super(
store,
in);
targetTable =
store.
getTable().
database.
schemaManager.
findTable(
session,
(
String)
rowData[
COL_POS_TABLE_NAME],
(
String)
rowData[
COL_POS_SCHEMA_NAME], null);
if ((
Boolean)
rowData[
COL_POS_IS_UPDATE]) {
updateData =
in.
readData(
targetTable.
colTypes);
RowInputBinary bin = (
RowInputBinary)
in;
if (
bin.
readNull()) {
updateColMap = null;
} else {
updateColMap =
bin.
readIntArray();
}
} else {
updateData = null;
updateColMap = null;
}
}
public void
write(
RowOutputInterface out) {
writeNodes(
out);
if (
hasDataChanged) {
out.
writeData(this,
table.
colTypes);
if (
updateData != null) {
Type[]
targetTypes =
targetTable.
colTypes;
out.
writeData(
targetTypes.length,
targetTypes,
updateData,
null, null);
RowOutputBinary bout = (
RowOutputBinary)
out;
if (
updateColMap == null) {
bout.
writeNull(
Type.
SQL_ARRAY_ALL_TYPES);
} else {
bout.
writeArray(
updateColMap);
}
}
out.
writeEnd();
hasDataChanged = false;
}
}
public
Object[]
getUpdateData() {
return
updateData;
}
public int[]
getUpdateColumnMap() {
return
updateColMap;
}
public void
setTargetTable(
Table table) {
targetTable =
table;
}
public void
setUpdateData(
Object[]
data) {
updateData =
data;
}
public void
setUpdateColumnMap(int[]
colMap) {
updateColMap =
colMap;
}
public int
getRealSize(
RowOutputInterface out) {
RowOutputBinary bout = (
RowOutputBinary)
out;
int
size =
out.
getSize(this);
if (
updateData != null) {
size +=
bout.
getSize(
updateData,
targetTable.
getColumnCount(),
targetTable.
getColumnTypes());
if (
updateColMap != null) {
size +=
bout.
getSize(
updateColMap);
}
}
return
size;
}
}