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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.store.berkeleydb.upgrade;
import org.apache.log4j.Logger;
import com.sleepycat.je.Database;
import com.sleepycat.je.DatabaseEntry;
import com.sleepycat.je.Transaction;
public abstract class CursorOperation implements DatabaseRunnable
{
private static final Logger _logger = Logger.getLogger(CursorOperation.class);
private CursorTemplate _template;
private long _rowCount;
private long _processedRowCount;
@Override
public void run(final Database sourceDatabase, final Database targetDatabase, final Transaction transaction)
{
_rowCount = sourceDatabase.count();
_template = new CursorTemplate(sourceDatabase, transaction, new DatabaseEntryCallback()
{
@Override
public void processEntry(final Database database, final Transaction transaction, final DatabaseEntry key,
final DatabaseEntry value)
{
_processedRowCount++;
CursorOperation.this.processEntry(database, targetDatabase, transaction, key, value);
if (getProcessedCount() % 1000 == 0)
{
_logger.info("Processed " + getProcessedCount() + " messages of " + getRowCount() + ".");
}
}
});
_template.processEntries();
}
public void abort()
{
if (_template != null)
{
_template.abort();
}
}
public boolean deleteCurrent()
{
if (_template != null)
{
return _template.deleteCurrent();
}
return false;
}
public long getRowCount()
{
return _rowCount;
}
public long getProcessedCount()
{
return _processedRowCount;
}
public abstract void processEntry(Database sourceDatabase, Database targetDatabase, Transaction transaction,
DatabaseEntry key, DatabaseEntry value);
}
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