org.datacleaner.cluster.FixedDivisionsCountJobDivisionManager Maven / Gradle / Ivy
/**
* DataCleaner (community edition)
* Copyright (C) 2014 Neopost - Customer Information Management
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.datacleaner.cluster;
import org.datacleaner.job.AnalysisJob;
/**
* A simple {@link JobDivisionManager} which builds divisions based on a
* preferred fixed number of divisions. Typically this fixed number will be the
* number of slave nodes in the cluster.
*/
public class FixedDivisionsCountJobDivisionManager implements JobDivisionManager {
private final int _divisionCount;
public FixedDivisionsCountJobDivisionManager(final int divisionCount) {
if (divisionCount <= 0) {
throw new IllegalArgumentException("Division count must be a positive integer");
}
_divisionCount = divisionCount;
}
@Override
public int calculateDivisionCount(final AnalysisJob masterJob, final int expectedRows) {
return _divisionCount;
}
}