trunk/ruta-core/src/main/java/org/apache/uima/ruta/condition/ScoreCondition.java

/*
 * 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.List;

import org.apache.uima.cas.Type;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.jcas.tcas.Annotation;
import org.apache.uima.ruta.RutaStream;
import org.apache.uima.ruta.expression.number.NumberExpression;
import org.apache.uima.ruta.expression.number.SimpleNumberExpression;
import org.apache.uima.ruta.rule.EvaluatedCondition;
import org.apache.uima.ruta.rule.RuleElement;
import org.apache.uima.ruta.type.RutaAnnotation;
import org.apache.uima.ruta.visitor.InferenceCrowd;

public class ScoreCondition extends TerminalRutaCondition {
  private final NumberExpression min;

  private final NumberExpression max;

  private final String var;

  public ScoreCondition(NumberExpression min, NumberExpression max, String var) {
    super();
    this.min = min == null ? new SimpleNumberExpression(Integer.MIN_VALUE) : min;
    this.max = max == null ? new SimpleNumberExpression(Integer.MAX_VALUE) : max;
    this.var = var;
  }

  @Override
  public EvaluatedCondition eval(AnnotationFS annotation, RuleElement element, RutaStream stream,
          InferenceCrowd crowd) {
    Type heuristicType = stream.getJCas().getCasType(RutaAnnotation.type);
    List<AnnotationFS> annotationsInWindow = stream.getAnnotationsInWindow(annotation,
            heuristicType);
    double score = 0;
    if (!annotationsInWindow.isEmpty()) {
      RutaAnnotation heuristicAnnotation = (RutaAnnotation) stream.getCas().createAnnotation(
              heuristicType, annotation.getBegin(), annotation.getEnd());
      heuristicAnnotation.setAnnotation((Annotation) annotation);
      RutaAnnotation tma = stream.getCorrectTMA(annotationsInWindow, heuristicAnnotation);
      score = tma.getScore();
    }
    if (var != null) {
      element.getParent().getEnvironment().setVariableValue(var, score);
    }
    boolean value = score >= min.getDoubleValue(element.getParent(), null, stream)
            && score <= max.getDoubleValue(element.getParent(), null, stream);
    return new EvaluatedCondition(this, value);
  }

  public NumberExpression getMin() {
    return min;
  }

  public NumberExpression getMax() {
    return max;
  }

  public String getVar() {
    return var;
  }

}