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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed 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.databene.commons.version;
import java.text.ParsePosition;
import org.databene.commons.ComparableComparator;
import org.databene.commons.StringUtil;
import org.databene.commons.math.Interval;
import org.databene.commons.math.Intervals;
import org.databene.commons.math.IntervalsParser;
/**
* {@link Intervals} implementation for {@link VersionNumber}s.
* Created: 11.03.2011 10:09:15
* @since 0.5.8
* @author Volker Bergmann
*/
public class Versions extends Intervals {
private static final long serialVersionUID = 6258577730893701943L;
private static final ComparableComparator VERSION_COMPARATOR = new ComparableComparator();
public static Versions valueOf(String spec) {
if (StringUtil.isEmpty(spec) || "*".equals(spec.trim()))
return createUnlimited();
IntervalsParser parser = new IntervalsParser(
new VersionNumberParser(), VERSION_COMPARATOR);
return (Versions) parser.parseObject(spec, new ParsePosition(0), new Versions());
}
public static Versions createUnlimited() {
Versions result = new Versions();
result.add(Interval.createInfiniteInterval());
return result;
}
public static Versions createSingleVersion(VersionNumber version) {
Versions result = new Versions();
result.add(new Interval(version, true, version, true, VERSION_COMPARATOR));
return result;
}
}