au.csiro.snorocket.core.util.FeatureSet Maven / Gradle / Ivy
/**
* Copyright (c) 2009 International Health Terminology Standards Development
* Organisation
*
* 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.
*/
/**
* Copyright CSIRO Australian e-Health Research Centre (http://aehrc.com).
* All rights reserved. Use is subject to license terms and conditions.
*/
package au.csiro.snorocket.core.util;
import java.io.Serializable;
import java.util.BitSet;
/**
* Stores a set of Feature indexes in the range 0..127 using the bits of two
* longs.
*
* @author Alejandro Metke
*/
final public class FeatureSet extends BitSet implements Serializable {
/**
* Serialisation version.
*/
private static final long serialVersionUID = 1L;
public FeatureSet() {
}
public FeatureSet(final FeatureSet initial) {
or(initial);
}
public void add(int feature) {
set(feature);
}
public void addAll(FeatureSet set) {
or(set);
}
public boolean contains(int feature) {
return get(feature);
}
public int first() {
return nextSetBit(0);
}
public int next(int feature) {
return nextSetBit(feature);
}
}