/* 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.
*
* 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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*/
package org.hsqldb_voltpatches.persist;
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.Session;
import org.hsqldb_voltpatches.index.Index;
import org.hsqldb_voltpatches.navigator.RowIterator;
import org.hsqldb_voltpatches.rowio.RowInputInterface;
public abstract class RowStoreAVL implements PersistentStore {
PersistentStoreCollection manager;
Index[] indexList = Index.emptyArray;
CachedObject[] accessorList = CachedObject.emptyArray;
// for result tables
long timestamp;
public boolean isMemory() {
return false;
}
public abstract int getAccessCount();
public abstract void set(CachedObject object);
public abstract CachedObject get(int key, boolean keep);
public abstract CachedObject get(CachedObject object, boolean keep);
public abstract int getStorageSize(int key);
public abstract void add(CachedObject object);
public abstract CachedObject get(RowInputInterface in)
;
public abstract CachedObject getNewInstance(int size);
public abstract CachedObject getNewCachedObject(Session session,
Object object);
public abstract void removePersistence(int i);
public abstract void removeAll();
public abstract void remove(int i);
public abstract void release(int i);
public abstract void commitPersistence(CachedObject object);
public abstract DataFileCache getCache();
public abstract void setCache(DataFileCache cache);
public abstract void release();
public PersistentStore getAccessorStore(Index index) {
return null;
}
public CachedObject getAccessor(Index key) {
int position = key.getPosition();
if (position >= accessorList.length) {
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreAV");
}
return accessorList[position];
}
public abstract void setAccessor(Index key, CachedObject accessor);
public abstract void setAccessor(Index key, int accessor);
public abstract void resetAccessorKeys(Index[] keys);
/**
* Basic delete with no logging or referential checks.
*/
public final void delete(Row row) {
for (int i = indexList.length - 1; i >= 0; i--) {
indexList[i].delete(this, row);
}
remove(row.getPos());
}
public final void indexRow(Session session, Row row) {
int i = 0;
try {
for (; i < indexList.length; i++) {
indexList[i].insert(session, this, row);
}
} catch (HsqlException e) {
// unique index violation - rollback insert
for (--i; i >= 0; i--) {
indexList[i].delete(this, row);
}
remove(row.getPos());
throw e;
}
}
public final void indexRows() {
RowIterator it = rowIterator();
for (int i = 1; i < indexList.length; i++) {
setAccessor(indexList[i], null);
}
while (it.hasNext()) {
Row row = it.getNextRow();
if (row instanceof RowAVL) {
((RowAVL) row).clearNonPrimaryNodes();
}
for (int i = 1; i < indexList.length; i++) {
indexList[i].insert(null, this, row);
}
}
}
public final RowIterator rowIterator() {
if (indexList.length == 0 || indexList[0] == null) {
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreAV");
}
return indexList[0].firstRow(this);
}
}