/* Copyright (c) 2001-2009, 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.
*
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* 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"
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package org.hsqldb_voltpatches.persist;
import java.io.IOException;
import org.hsqldb_voltpatches.Error;
import org.hsqldb_voltpatches.ErrorCode;
import org.hsqldb_voltpatches.HsqlException;
import org.hsqldb_voltpatches.Row;
import org.hsqldb_voltpatches.RowAVL;
import org.hsqldb_voltpatches.RowAVLDisk;
import org.hsqldb_voltpatches.RowAction;
import org.hsqldb_voltpatches.Session;
import org.hsqldb_voltpatches.Table;
import org.hsqldb_voltpatches.index.Index;
import org.hsqldb_voltpatches.index.NodeAVL;
import org.hsqldb_voltpatches.lib.ArrayUtil;
import org.hsqldb_voltpatches.lib.IntKeyHashMapConcurrent;
import org.hsqldb_voltpatches.rowio.RowInputInterface;
/*
* Implementation of PersistentStore for CACHED tables.
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 1.9.0
* @since 1.9.0
*/
public class RowStoreAVLDisk extends RowStoreAVL {
DataFileCache cache;
Table table;
IntKeyHashMapConcurrent rowActionMap;
public RowStoreAVLDisk(PersistentStoreCollection manager,
DataFileCache cache, Table table) {
this.manager = manager;
this.table = table;
this.indexList = table.getIndexList();
this.accessorList = new CachedObject[indexList.length];
this.cache = cache;
manager.setStore(table, this);
rowActionMap = table.database.txManager.rowActionMap;
}
public boolean isMemory() {
return false;
}
public int getAccessCount() {
return cache.getAccessCount();
}
public void set(CachedObject object) {
Row row = ((Row) object);
row.rowAction = (RowAction) rowActionMap.get(row.getPos());
}
public CachedObject get(int key) {
CachedObject object = cache.get(key, this, false);
return object;
}
public CachedObject getKeep(int key) {
CachedObject object = cache.get(key, this, true);
return object;
}
public CachedObject get(int 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 int getStorageSize(int i) {
return cache.get(i, this, false).getStorageSize();
}
public void add(CachedObject object) {
int size = object.getRealSize(cache.rowOut);
size = cache.rowOut.getStorageSize(size);
object.setStorageSize(size);
cache.add(object);
}
public CachedObject get(RowInputInterface in) {
try {
return new RowAVLDisk(table, in);
} catch (IOException e) {
throw Error.error(ErrorCode.DATA_FILE_ERROR, e);
}
}
public CachedObject getNewCachedObject(Session session, Object object) {
Row row = new RowAVLDisk(table, (Object[]) object);
add(row);
if (session != null) {
RowAction.addAction(session, RowAction.ACTION_INSERT, table, row);
}
return row;
}
public void removeAll() {
ArrayUtil.fillArray(accessorList, null);
}
public void remove(int i) {
cache.remove(i, this);
}
public void removePersistence(int i) {}
public void release(int i) {
cache.release(i);
}
public void commitPersistence(CachedObject row) {}
public DataFileCache getCache() {
return cache;
}
public void setCache(DataFileCache cache) {
this.cache = cache;
}
public void release() {
ArrayUtil.fillArray(accessorList, null);
cache = null;
}
public void setAccessor(Index key, CachedObject accessor) {
Index index = (Index) key;
accessorList[index.getPosition()] = accessor;
}
public CachedObject getAccessor(Index key) {
NodeAVL node = (NodeAVL) accessorList[key.getPosition()];
if (node == null) {
return null;
}
if (!node.isInMemory()) {
RowAVL row = (RowAVL) get(node.getPos(), false);
node = row.getNode(key.getPosition());
accessorList[key.getPosition()] = node;
}
return node;
}
public void setAccessor(Index key, int accessor) {
CachedObject object = get(accessor, false);
if (object != null) {
NodeAVL node = ((RowAVL) object).getNode(key.getPosition());
object = node;
}
setAccessor(key, object);
}
public void resetAccessorKeys(Index[] keys) {
if (indexList.length == 0 || indexList[0] == null
|| accessorList[0] == null) {
indexList = keys;
accessorList = new CachedObject[indexList.length];
return;
}
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreCached");
}
public CachedObject getNewInstance(int size) {
return null;
}
}