/* | |
* 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.uima.cas.impl; | |
import java.util.ArrayList; | |
import org.apache.uima.cas.FSBooleanConstraint; | |
import org.apache.uima.cas.FSMatchConstraint; | |
import org.apache.uima.cas.Feature; | |
import org.apache.uima.cas.FeatureStructure; | |
/** | |
* Implementation of boolean match constraint. See interface for documentation. | |
*/ | |
public class BooleanConstraint extends PathConstraint implements FSMatchConstraint { | |
private final FSBooleanConstraint cons; | |
BooleanConstraint(ArrayList<String> path, FSBooleanConstraint constraint) { | |
super(path); | |
this.cons = constraint; | |
} | |
public boolean match(FeatureStructure fs) { | |
final int max = this.featNames.size() - 1; // The last position in the | |
// path! | |
if (max < 0) { | |
// If the path is empty, we can't get a boolean, and therefore the | |
// constraint is not satisfied. | |
return false; | |
} | |
Feature feat; | |
for (int i = 0; i < max; i++) { | |
feat = fs.getType().getFeatureByBaseName((String) this.featNames.get(i)); | |
if (feat == null) { | |
return false; | |
} | |
fs = fs.getFeatureValue(feat); | |
} | |
feat = fs.getType().getFeatureByBaseName((String) this.featNames.get(max)); | |
if (feat == null) { | |
return false; | |
} | |
return this.cons.match(fs.getBooleanValue(feat)); | |
} | |
} |