/*
* 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.ruta.condition;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.ruta.RutaEnvironment;
import org.apache.uima.ruta.RutaStream;
import org.apache.uima.ruta.expression.bool.BooleanExpression;
import org.apache.uima.ruta.expression.bool.SimpleBooleanExpression;
import org.apache.uima.ruta.expression.string.StringExpression;
import org.apache.uima.ruta.rule.EvaluatedCondition;
import org.apache.uima.ruta.rule.RuleElement;
import org.apache.uima.ruta.visitor.InferenceCrowd;
public class RegExpCondition extends TerminalRutaCondition {
private final StringExpression pattern;
private final BooleanExpression ignoreCase;
private String variable;
public RegExpCondition(StringExpression pattern, BooleanExpression ignoreCase) {
super();
this.pattern = pattern;
this.ignoreCase = ignoreCase == null ? new SimpleBooleanExpression(false) : ignoreCase;
}
public RegExpCondition(String variable, StringExpression pattern, BooleanExpression ignoreCase) {
this(pattern, ignoreCase);
this.variable = variable;
}
@Override
public EvaluatedCondition eval(AnnotationFS annotation, RuleElement element,
RutaStream stream, InferenceCrowd crowd) {
Matcher matcher = null;
boolean ignore = ignoreCase == null ? false : ignoreCase.getBooleanValue(element.getParent());
String stringValue = pattern.getStringValue(element.getParent());
if (variable == null) {
String coveredText = annotation.getCoveredText();
Pattern regularExpPattern = null;
if (ignore) {
regularExpPattern = Pattern.compile(stringValue, Pattern.CASE_INSENSITIVE);
} else {
regularExpPattern = Pattern.compile(stringValue);
}
matcher = regularExpPattern.matcher(coveredText);
} else {
RutaEnvironment environment = element.getParent().getEnvironment();
String variableValue = environment.getVariableValue(variable, String.class);
Pattern regularExpPattern = null;
if (ignore) {
regularExpPattern = Pattern.compile(stringValue, Pattern.CASE_INSENSITIVE);
} else {
regularExpPattern = Pattern.compile(stringValue);
}
matcher = regularExpPattern.matcher(variableValue);
}
boolean matches = matcher.matches();
return new EvaluatedCondition(this, matches);
}
public StringExpression getPattern() {
return pattern;
}
public String getVariable() {
return variable;
}
public BooleanExpression getIgnoreCase() {
return ignoreCase;
}
}