/* Copyright (c) 2001-2016, 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
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* 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;
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* 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.persist;
import java.io.
IOException;
import java.util.concurrent.locks.
ReentrantReadWriteLock;
import org.hsqldb.
HsqlException;
import org.hsqldb.
Row;
import org.hsqldb.
RowAVL;
import org.hsqldb.
RowAVLDiskData;
import org.hsqldb.
RowAction;
import org.hsqldb.
Session;
import org.hsqldb.
Table;
import org.hsqldb.
TransactionManager;
import org.hsqldb.error.
Error;
import org.hsqldb.error.
ErrorCode;
import org.hsqldb.index.
Index;
import org.hsqldb.lib.
ArrayUtil;
import org.hsqldb.rowio.
RowInputInterface;
import org.hsqldb.rowio.
RowOutputInterface;
/*
* Implementation of PersistentStore for TEXT tables.
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.3.4
* @since 1.9.0
*/
public class
RowStoreAVLDiskData extends
RowStoreAVL {
DataFileCache cache;
RowOutputInterface rowOut;
public
RowStoreAVLDiskData(
Table table) {
this.
database =
table.
database;
this.
table =
table;
this.
indexList =
table.
getIndexList();
this.
accessorList = new
CachedObject[
indexList.length];
lock = new
ReentrantReadWriteLock();
readLock =
lock.
readLock();
writeLock =
lock.
writeLock();
}
public
Object[]
getData(
RowAVLDiskData row) {
cache.
writeLock.
lock();
try {
cache.
get(
row, this, false);
return
row.
getData();
} finally {
cache.
writeLock.
unlock();
}
}
public
CachedObject get(long
key, boolean
keep) {
CachedObject object =
cache.
get(
key, this,
keep);
return
object;
}
public
CachedObject get(
CachedObject object, boolean
keep) {
object =
cache.
get(
object, this,
keep);
return
object;
}
public void
add(
Session session,
CachedObject object, boolean
tx) {
cache.
writeLock.
lock();
try {
int
size =
object.
getRealSize(
cache.
rowOut);
object.
setStorageSize(
size);
long
pos =
tableSpace.
getFilePosition(
size, false);
object.
setPos(
pos);
if (
tx) {
RowAction.
addInsertAction(
session,
table, (
Row)
object);
}
cache.
add(
object, false);
} finally {
cache.
writeLock.
unlock();
}
}
public
CachedObject get(
RowInputInterface in) {
try {
RowAVLDiskData row = new
RowAVLDiskData(this,
table,
in);
row.
setPos(
in.
getFilePosition());
row.
setStorageSize(
in.
getSize());
row.
setChanged(false);
((
TextCache)
cache).
addInit(
row);
return
row;
} catch (
IOException e) {
throw
Error.
error(
ErrorCode.
TEXT_FILE_IO,
e);
}
}
public
CachedObject get(
CachedObject object,
RowInputInterface in) {
Object[]
rowData =
in.
readData(
table.
getColumnTypes());
((
RowAVLDiskData)
object).
setData(
rowData);
return
object;
}
public
CachedObject getNewCachedObject(
Session session,
Object object,
boolean
tx) {
Row row = new
RowAVLDiskData(this,
table, (
Object[])
object);
add(
session,
row,
tx);
return
row;
}
public void
indexRow(
Session session,
Row row) {
super.indexRow(
session,
row);
}
public boolean
isMemory() {
return false;
}
public void
set(
CachedObject object) {}
public
CachedObject get(long
key) {
CachedObject object =
cache.
get(
key, this, false);
return
object;
}
public void
removeAll() {
destroy();
elementCount.
set(0);
ArrayUtil.
fillArray(
accessorList, null);
}
public void
remove(
CachedObject object) {
cache.
remove(
object);
}
public
CachedObject getAccessor(
Index key) {
int
position =
key.
getPosition();
if (
position >=
accessorList.length) {
throw
Error.
runtimeError(
ErrorCode.
U_S0500, "RowStoreAVL");
}
return
accessorList[
position];
}
public void
commitPersistence(
CachedObject row) {
try {
cache.
saveRow(
row);
} catch (
HsqlException e1) {}
}
public void
postCommitAction(
Session session,
RowAction action) {
if (
action.
getType() ==
RowAction.
ACTION_DELETE_FINAL
&& !
action.
isDeleteComplete()) {
action.
setDeleteComplete();
Row row =
action.
getRow();
if (
row == null) {
row = (
Row)
get(
action.
getPos(), false);
}
delete(
session,
row);
remove(
row);
}
}
public void
commitRow(
Session session,
Row row, int
changeAction,
int
txModel) {
switch (
changeAction) {
case
RowAction.
ACTION_DELETE :
cache.
removePersistence(
row);
break;
case
RowAction.
ACTION_INSERT :
commitPersistence(
row);
break;
case
RowAction.
ACTION_INSERT_DELETE :
// INSERT + DELETE
if (
txModel ==
TransactionManager.
LOCKS) {
remove(
row);
} else {
delete(
session,
row);
remove(
row);
}
break;
case
RowAction.
ACTION_DELETE_FINAL :
throw
Error.
runtimeError(
ErrorCode.
U_S0500, "RowStore");
}
}
public void
rollbackRow(
Session session,
Row row, int
changeAction,
int
txModel) {
switch (
changeAction) {
case
RowAction.
ACTION_DELETE :
if (
txModel ==
TransactionManager.
LOCKS) {
((
RowAVL)
row).
setNewNodes(this);
indexRow(
session,
row);
}
break;
case
RowAction.
ACTION_INSERT :
if (
txModel ==
TransactionManager.
LOCKS) {
delete(
session,
row);
remove(
row);
}
break;
case
RowAction.
ACTION_INSERT_DELETE :
// INSERT + DELETE
if (
txModel ==
TransactionManager.
LOCKS) {
remove(
row);
} else {
delete(
session,
row);
remove(
row);
}
break;
}
}
public
DataFileCache getCache() {
return
cache;
}
public void
setCache(
DataFileCache cache) {
this.
cache =
cache;
this.
tableSpace =
cache.
spaceManager.
getTableSpace(
DataSpaceManager.
tableIdDefault);
}
/**
* Does not adjust usage count
*/
public void
release() {
destroy();
table.
database.
logger.
textTableManager.
closeTextCache((
Table)
table);
cache = null;
ArrayUtil.
fillArray(
accessorList, null);
}
public void
readLock() {
readLock.
lock();
}
public void
readUnlock() {
readLock.
unlock();
}
public void
writeLock() {
writeLock.
lock();
}
public void
writeUnlock() {
writeLock.
unlock();
}
}