RowStoreDataChange.java

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package org.hsqldb.persist;

import java.io.IOException;

import org.hsqldb.HsqlException;
import org.hsqldb.Row;
import org.hsqldb.RowDiskDataChange;
import org.hsqldb.Session;
import org.hsqldb.TableBase;
import org.hsqldb.rowio.RowInputInterface;

/*
 * Implementation of PersistentStore for data change lists.
 *
 * @author Fred Toussi (fredt@users dot sourceforge.net)
 * @version 2.3.0
 * @since 2.2.7
 */
public class RowStoreDataChange extends RowStoreAVLHybrid {

    Session session;

    public RowStoreDataChange(Session session,
                              PersistentStoreCollection manager,
                              TableBase table) {

        super(session, manager, table, true);

        this.session = session;

        super.changeToDiskTable(session);
    }

    public CachedObject getNewCachedObject(Session session, Object object,
                                           boolean tx) {

        Row row = new RowDiskDataChange(table, (Object[]) object, this, null);

        add(session, row, tx);

        return row;
    }

    public CachedObject get(RowInputInterface in) {

        try {
            return new RowDiskDataChange(session, table, in);
        } catch (HsqlException e) {
            return null;
        } catch (IOException e1) {
            return null;
        }
    }
}