| /* |
| * 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.expression; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.uima.cas.FeatureStructure; |
| 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.annotation.IAnnotationExpression; |
| import org.apache.uima.ruta.expression.annotation.IAnnotationListExpression; |
| import org.apache.uima.ruta.expression.feature.FeatureExpression; |
| import org.apache.uima.ruta.expression.feature.FeatureMatchExpression; |
| import org.apache.uima.ruta.expression.type.ITypeExpression; |
| import org.apache.uima.ruta.rule.MatchContext; |
| |
| public class AnnotationTypeExpression extends RutaExpression |
| implements ITypeExpression, IAnnotationExpression, IAnnotationListExpression { |
| |
| private MatchReference reference; |
| |
| private ITypeExpression typeExpression; |
| |
| private IAnnotationExpression annotationExpression; |
| |
| private IAnnotationListExpression annotationListExpression; |
| |
| private FeatureExpression featureExpression; |
| |
| private boolean initialized = false; |
| |
| public AnnotationTypeExpression(MatchReference reference) { |
| super(); |
| this.reference = reference; |
| } |
| |
| private void initialize(MatchContext context, RutaStream stream) { |
| annotationExpression = reference.getAnnotationExpression(context, stream); |
| annotationListExpression = reference.getAnnotationListExpression(context, stream); |
| featureExpression = reference.getFeatureExpression(context, stream); |
| typeExpression = reference.getTypeExpression(context, stream); |
| initialized = true; |
| } |
| |
| @Override |
| public AnnotationFS getAnnotation(MatchContext context, RutaStream stream) { |
| if (!initialized) { |
| initialize(context, stream); |
| } |
| if (annotationExpression != null) { |
| AnnotationFS annotation = annotationExpression.getAnnotation(context, stream); |
| if (featureExpression != null) { |
| List<AnnotationFS> annotations = new ArrayList<>(1); |
| annotations.add(annotation); |
| Collection<? extends AnnotationFS> result = featureExpression.getAnnotations(annotations, |
| true, context, stream); |
| if (result != null && !result.isEmpty()) { |
| return result.iterator().next(); |
| } |
| return null; |
| } else { |
| return annotation; |
| } |
| } else if (annotationListExpression != null) { |
| List<AnnotationFS> annotations = annotationListExpression.getAnnotationList(context, stream); |
| |
| if (annotations != null && !annotations.isEmpty()) { |
| if (featureExpression != null) { |
| Collection<? extends AnnotationFS> result = featureExpression.getAnnotations(annotations, |
| true, context, stream); |
| if (result.isEmpty()) { |
| return null; |
| } |
| annotations = new ArrayList<>(result); |
| } |
| if (context.getDirection()) { |
| return annotations.get(annotations.size() - 1); |
| } else { |
| return annotations.get(0); |
| } |
| } |
| } else { |
| Type type = getType(context, stream); |
| if (type != null) { |
| |
| List<AnnotationFS> bestGuessedAnnotations = null; |
| |
| if (featureExpression instanceof FeatureMatchExpression) { |
| // allow more matches for feature matches |
| bestGuessedAnnotations = stream.getAnnotationsByTypeInContext(type, context); |
| } else if(featureExpression != null) { |
| bestGuessedAnnotations = stream.getBestGuessedAnnotationsAt(context.getAnnotation(), |
| type); |
| } else { |
| bestGuessedAnnotations = stream.getBestGuessedAnnotationsAt(context.getAnnotation(), |
| type); |
| if (bestGuessedAnnotations.isEmpty()) { |
| bestGuessedAnnotations = new ArrayList<>(1); |
| bestGuessedAnnotations.add(stream.getSingleAnnotationByTypeInContext(type, context)); |
| } |
| } |
| |
| if (featureExpression != null) { |
| Collection<AnnotationFS> annotations = new ArrayList<>(); |
| annotations.addAll(bestGuessedAnnotations); |
| Collection<? extends AnnotationFS> featureAnnotations = featureExpression |
| .getAnnotations(annotations, true, context, stream); |
| if (featureAnnotations != null && !featureAnnotations.isEmpty()) { |
| return featureAnnotations.iterator().next(); |
| } |
| } |
| if (bestGuessedAnnotations != null && !bestGuessedAnnotations.isEmpty()) { |
| return bestGuessedAnnotations.get(0); |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public FeatureStructure getFeatureStructure(MatchContext context, RutaStream stream) { |
| if (annotationExpression != null) { |
| return annotationExpression.getFeatureStructure(context, stream); |
| } |
| return getAnnotation(context, stream); |
| } |
| |
| @Override |
| public Type getType(MatchContext context, RutaStream stream) { |
| if (!initialized) { |
| initialize(context, stream); |
| } |
| if (typeExpression != null) { |
| return typeExpression.getType(context, stream); |
| } else { |
| AnnotationFS annotation = getAnnotation(context, stream); |
| if (annotation != null) { |
| return annotation.getType(); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public String getStringValue(MatchContext context, RutaStream stream) { |
| if (!initialized) { |
| initialize(context, stream); |
| } |
| if (annotationListExpression != null) { |
| return annotationListExpression.getStringValue(context, stream); |
| } else if (annotationExpression != null) { |
| return annotationExpression.getStringValue(context, stream); |
| } else if (typeExpression != null) { |
| return typeExpression.getStringValue(context, stream); |
| } |
| return ""; |
| } |
| |
| @Override |
| public List<AnnotationFS> getAnnotationList(MatchContext context, RutaStream stream) { |
| if (!initialized) { |
| initialize(context, stream); |
| } |
| if (annotationListExpression != null) { |
| List<AnnotationFS> result = annotationListExpression.getAnnotationList(context, stream); |
| if (featureExpression != null) { |
| return new ArrayList<>(featureExpression.getAnnotations(result, true, context, stream)); |
| } else { |
| return result; |
| } |
| } else if (annotationExpression != null) { |
| AnnotationFS annotation = annotationExpression.getAnnotation(context, stream); |
| List<AnnotationFS> result = new ArrayList<AnnotationFS>(1); |
| result.add(annotation); |
| if (featureExpression != null) { |
| return new ArrayList<>(featureExpression.getAnnotations(result, true, context, stream)); |
| } else { |
| return result; |
| } |
| } else { |
| Type type = getType(context, stream); |
| if (type != null) { |
| |
| List<AnnotationFS> bestGuessedAnnotations = null; |
| |
| if (featureExpression instanceof FeatureMatchExpression) { |
| // allow more matches for feature matches |
| bestGuessedAnnotations = stream.getAnnotationsByTypeInContext(type, context); |
| } else if(featureExpression != null) { |
| bestGuessedAnnotations = stream.getBestGuessedAnnotationsAt(context.getAnnotation(), |
| type); |
| if (bestGuessedAnnotations.isEmpty()) { |
| bestGuessedAnnotations =stream.getAnnotationsByTypeInContext(type, context); |
| } |
| } else { |
| bestGuessedAnnotations =stream.getAnnotationsByTypeInContext(type, context); |
| } |
| |
| if (featureExpression != null) { |
| Collection<AnnotationFS> annotations = new ArrayList<>(); |
| annotations.addAll(bestGuessedAnnotations); |
| Collection<? extends AnnotationFS> featureAnnotations = featureExpression |
| .getAnnotations(annotations, true, context, stream); |
| if (featureAnnotations != null && !featureAnnotations.isEmpty()) { |
| return new ArrayList<>(featureAnnotations); |
| } |
| } |
| if (bestGuessedAnnotations != null && !bestGuessedAnnotations.isEmpty()) { |
| return bestGuessedAnnotations; |
| } |
| } |
| } |
| return Collections.emptyList(); |
| } |
| |
| public MatchReference getReference() { |
| return reference; |
| } |
| |
| public void setReference(MatchReference reference) { |
| this.reference = reference; |
| } |
| |
| public ITypeExpression getTypeExpression() { |
| return typeExpression; |
| } |
| |
| public IAnnotationExpression getAnnotationExpression() { |
| return annotationExpression; |
| } |
| |
| public IAnnotationListExpression getAnnotationListExpression() { |
| return annotationListExpression; |
| } |
| |
| public FeatureExpression getFeatureExpression() { |
| return featureExpression; |
| } |
| |
| public String toString() { |
| return reference.toString(); |
| } |
| |
| } |