/*
* 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.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.uima.cas.Type;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.ruta.RutaStream;
import org.apache.uima.ruta.expression.number.INumberExpression;
import org.apache.uima.ruta.expression.number.SimpleNumberExpression;
import org.apache.uima.ruta.expression.type.TypeExpression;
import org.apache.uima.ruta.rule.EvaluatedCondition;
import org.apache.uima.ruta.rule.RuleElement;
import org.apache.uima.ruta.type.RutaBasic;
import org.apache.uima.ruta.visitor.InferenceCrowd;
public class ContextCountCondition extends TypeSentiveCondition {
private final INumberExpression min;
private final INumberExpression max;
private final String var;
public ContextCountCondition(TypeExpression type, INumberExpression min, INumberExpression max,
String var) {
super(type);
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 contextType = type.getType(element.getParent());
stream.moveToFirst();
List<AnnotationFS> visibleContexts = new ArrayList<AnnotationFS>();
while (stream.isValid()) {
RutaBasic each = (RutaBasic) stream.get();
if (each.beginsWith(contextType)) {
visibleContexts.addAll(each.getBeginAnchors(contextType));
}
stream.moveToNext();
}
List<AnnotationFS> overlappingContexts = new ArrayList<AnnotationFS>();
for (AnnotationFS eachContext : visibleContexts) {
if (eachContext.getBegin() <= annotation.getBegin()
&& eachContext.getEnd() >= annotation.getEnd()) {
overlappingContexts.add(eachContext);
}
}
boolean result = false;
for (AnnotationFS eachContext : overlappingContexts) {
int index = 0;
int counter = 0;
List<RutaBasic> basicsInWindow = stream.getBasicsInWindow(eachContext);
for (RutaBasic eachBasic : basicsInWindow) {
Collection<AnnotationFS> beginAnchors = eachBasic.getBeginAnchors(annotation.getType());
if (beginAnchors != null) {
for (AnnotationFS each : beginAnchors) {
counter++;
if (each.getBegin() == annotation.getBegin()
&& each.getEnd() == annotation.getEnd()
&& (each.getType().equals(annotation.getType()) || stream.getCas()
.getTypeSystem().subsumes(annotation.getType(), each.getType()))) {
index = counter;
}
}
}
}
if (var != null) {
element.getParent().getEnvironment().setVariableValue(var, index);
}
boolean value = index >= min.getIntegerValue(element.getParent(), annotation, stream)
&& index <= max.getIntegerValue(element.getParent(), annotation, stream);
result |= value;
if (result) {
break;
}
}
return new EvaluatedCondition(this, result);
}
public INumberExpression getMin() {
return min;
}
public INumberExpression getMax() {
return max;
}
public String getVar() {
return var;
}
}