/**
* 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.lucene.util;
import java.io.File;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.types.Parameter;
import org.apache.tools.ant.types.selectors.BaseExtendSelector;
/** Divides filesets into equal groups */
public class LuceneJUnitDividingSelector extends BaseExtendSelector {
private int counter;
/** Number of total parts to split. */
private int divisor;
/** Current part to accept. */
private int part;
public void setParameters(Parameter[] pParameters) {
super.setParameters(pParameters);
for (int j = 0; j < pParameters.length; j++) {
Parameter p = pParameters[j];
if ("divisor".equalsIgnoreCase(p.getName())) {
divisor = Integer.parseInt(p.getValue());
}
else if ("part".equalsIgnoreCase(p.getName())) {
part = Integer.parseInt(p.getValue());
}
else {
throw new BuildException("unknown " + p.getName());
}
}
}
public void verifySettings() {
super.verifySettings();
if (divisor <= 0 || part <= 0) {
throw new BuildException("part or divisor not set");
}
if (part > divisor) {
throw new BuildException("part must be <= divisor");
}
}
public boolean isSelected(File dir, String name, File path) {
counter = counter % divisor + 1;
return counter == part;
}
}