/* Copyright (c) 2001-2009, The HSQL Development Group
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* and/or other materials provided with the distribution.
*
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*
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package org.hsqldb_voltpatches.persist;
import org.hsqldb_voltpatches.Error;
import org.hsqldb_voltpatches.ErrorCode;
import org.hsqldb_voltpatches.Session;
import org.hsqldb_voltpatches.TableBase;
import org.hsqldb_voltpatches.lib.Iterator;
import org.hsqldb_voltpatches.lib.LongKeyHashMap;
import org.hsqldb_voltpatches.HsqlException;
/**
* Collection of PersistenceStore itmes currently used by a session.
* An item is retrieved based on key returned by
* TableBase.getPersistenceId().
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 1.9.0
* @since 1.9.0
*/
public class PersistentStoreCollectionSession
implements PersistentStoreCollection {
private final Session session;
private final LongKeyHashMap rowStoreMapSession = new LongKeyHashMap();
private LongKeyHashMap rowStoreMapTransaction = new LongKeyHashMap();
private LongKeyHashMap rowStoreMapStatement = new LongKeyHashMap();
public PersistentStoreCollectionSession(Session session) {
this.session = session;
}
public void setStore(Object key, PersistentStore store) {
TableBase table = (TableBase) key;
switch (table.persistenceScope) {
case TableBase.SCOPE_STATEMENT :
if (store == null) {
rowStoreMapStatement.remove(table.getPersistenceId());
} else {
rowStoreMapStatement.put(table.getPersistenceId(), store);
}
break;
case TableBase.SCOPE_TRANSACTION :
if (store == null) {
rowStoreMapTransaction.remove(table.getPersistenceId());
} else {
rowStoreMapTransaction.put(table.getPersistenceId(),
store);
}
break;
case TableBase.SCOPE_SESSION :
if (store == null) {
rowStoreMapSession.remove(table.getPersistenceId());
} else {
rowStoreMapSession.put(table.getPersistenceId(), store);
}
break;
default :
throw Error.runtimeError(ErrorCode.U_S0500,
"PersistentStoreCollection");
}
}
public PersistentStore getStore(Object key) {
try {
TableBase table = (TableBase) key;
PersistentStore store;
switch (table.persistenceScope) {
case TableBase.SCOPE_STATEMENT :
store = (PersistentStore) rowStoreMapStatement.get(
table.getPersistenceId());
if (store == null) {
store = session.database.logger.newStore(session,
this, table, true);
}
return store;
case TableBase.SCOPE_TRANSACTION :
store = (PersistentStore) rowStoreMapTransaction.get(
table.getPersistenceId());
if (store == null) {
store = session.database.logger.newStore(session,
this, table, true);
}
return store;
case TableBase.SCOPE_SESSION :
store = (PersistentStore) rowStoreMapSession.get(
table.getPersistenceId());
if (store == null) {
store = session.database.logger.newStore(session,
this, table, true);
}
return store;
}
} catch (HsqlException e) {}
throw Error.runtimeError(ErrorCode.U_S0500, "PSCS");
}
public void clearAllTables() {
clearSessionTables();
clearTransactionTables();
clearStatementTables();
}
public void clearResultTables(long actionTimestamp) {
if (rowStoreMapSession.isEmpty()) {
return;
}
Iterator it = rowStoreMapSession.values().iterator();
while (it.hasNext()) {
RowStoreAVL store = (RowStoreAVL) it.next();
if (store.timestamp == actionTimestamp) {
store.release();
}
}
}
public void clearSessionTables() {
if (rowStoreMapSession.isEmpty()) {
return;
}
Iterator it = rowStoreMapSession.values().iterator();
while (it.hasNext()) {
PersistentStore store = (PersistentStore) it.next();
store.release();
}
}
public void clearTransactionTables() {
if (rowStoreMapTransaction.isEmpty()) {
return;
}
Iterator it = rowStoreMapTransaction.values().iterator();
while (it.hasNext()) {
PersistentStore store = (PersistentStore) it.next();
store.release();
}
}
public void clearStatementTables() {
if (rowStoreMapStatement.isEmpty()) {
return;
}
Iterator it = rowStoreMapStatement.values().iterator();
while (it.hasNext()) {
PersistentStore store = (PersistentStore) it.next();
store.release();
}
}
}