/* | |
* 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.Arrays; | |
import java.util.Collections; | |
import java.util.List; | |
import org.apache.uima.ruta.RutaConstants; | |
import org.apache.uima.ruta.RutaEnvironment; | |
import org.apache.uima.ruta.RutaStream; | |
import org.apache.uima.ruta.block.RutaBlock; | |
import org.apache.uima.ruta.expression.annotation.AnnotationListVariableExpression; | |
import org.apache.uima.ruta.expression.annotation.AnnotationListVariableIndexExpression; | |
import org.apache.uima.ruta.expression.annotation.AnnotationVariableExpression; | |
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.feature.SimpleFeatureExpression; | |
import org.apache.uima.ruta.expression.type.ITypeExpression; | |
import org.apache.uima.ruta.expression.type.SimpleTypeExpression; | |
import org.apache.uima.ruta.expression.type.TypeVariableExpression; | |
import org.apache.uima.ruta.rule.MatchContext; | |
import org.apache.uima.ruta.utils.IndexedReference; | |
import org.apache.uima.ruta.utils.ParsingUtils; | |
public class MatchReference extends RutaExpression { | |
private String reference; | |
private String comparator; | |
private IRutaExpression argument; | |
private ITypeExpression typeExpression; | |
private IAnnotationExpression annotationExpression; | |
private IAnnotationListExpression annotationListExpression; | |
private FeatureExpression featureExpression; | |
private List<String> features = Collections.emptyList(); | |
private boolean initialized = false; | |
public MatchReference(String reference) { | |
this(reference, null, null); | |
} | |
public MatchReference(String reference, String comparator, IRutaExpression argument) { | |
super(); | |
this.reference = reference; | |
this.comparator = comparator; | |
this.argument = argument; | |
} | |
public MatchReference(ITypeExpression expression) { | |
super(); | |
this.typeExpression = expression; | |
initialized = true; | |
} | |
public MatchReference(IAnnotationExpression expression) { | |
super(); | |
this.annotationExpression = expression; | |
initialized = true; | |
} | |
public MatchReference(IAnnotationListExpression expression) { | |
super(); | |
this.annotationListExpression = expression; | |
initialized = true; | |
} | |
private void resolve(MatchContext context, RutaStream stream) { | |
if (initialized) { | |
return; | |
} | |
RutaBlock parent = context.getParent(); | |
RutaEnvironment e = parent.getEnvironment(); | |
boolean success = buildTypeOrAnnotationExpression(reference, e, context, stream); | |
if (!success) { | |
String[] elements = reference.split("[.]"); | |
StringBuilder sb = new StringBuilder(); | |
List<String> tail = null; | |
int counter = 0; | |
for (String eachPart : elements) { | |
if (sb.length() != 0) { | |
sb.append('.'); | |
} | |
sb.append(eachPart); | |
String head = sb.toString(); | |
success = buildTypeOrAnnotationExpression(head, e, context, stream); | |
if (success) { | |
tail = Arrays.asList(elements).subList(counter + 1, elements.length); | |
break; | |
} | |
counter++; | |
} | |
if (tail != null) { | |
if (comparator != null && argument != null) { | |
featureExpression = new FeatureMatchExpression(this, comparator, argument); | |
} else { | |
featureExpression = new SimpleFeatureExpression(this); | |
} | |
features = tail; | |
} | |
} | |
initialized = true; | |
if (typeExpression == null && annotationExpression == null | |
&& annotationListExpression == null) { | |
throw new IllegalArgumentException( | |
"Not able to resolve annotation/type expression: " + reference); | |
} | |
} | |
private boolean buildTypeOrAnnotationExpression(String candidate, RutaEnvironment environment, | |
MatchContext context, RutaStream stream) { | |
IndexedReference indexedReference = ParsingUtils.parseIndexedReference(candidate); | |
if (indexedReference.index >= 0) { | |
if (environment.isVariableOfType(candidate, RutaConstants.RUTA_VARIABLE_ANNOTATION_LIST)) { | |
annotationExpression = new AnnotationListVariableIndexExpression(indexedReference.reference, | |
indexedReference.index); | |
return true; | |
} | |
} else { | |
if (environment.isVariableOfType(candidate, RutaConstants.RUTA_VARIABLE_TYPE)) { | |
typeExpression = new TypeVariableExpression(candidate); | |
return true; | |
} else if (environment.isVariableOfType(candidate, RutaConstants.RUTA_VARIABLE_ANNOTATION)) { | |
annotationExpression = new AnnotationVariableExpression(candidate); | |
return true; | |
} else if (environment.isVariableOfType(candidate, | |
RutaConstants.RUTA_VARIABLE_ANNOTATION_LIST)) { | |
annotationListExpression = new AnnotationListVariableExpression(candidate); | |
return true; | |
} else if (environment.getType(candidate) != null) { | |
typeExpression = new SimpleTypeExpression(candidate); | |
return true; | |
} | |
} | |
return false; | |
} | |
public ITypeExpression getTypeExpression(MatchContext context, RutaStream stream) { | |
resolve(context, stream); | |
return typeExpression; | |
} | |
public IAnnotationExpression getAnnotationExpression(MatchContext context, RutaStream stream) { | |
resolve(context, stream); | |
return annotationExpression; | |
} | |
public IAnnotationListExpression getAnnotationListExpression(MatchContext context, | |
RutaStream stream) { | |
resolve(context, stream); | |
return annotationListExpression; | |
} | |
public FeatureExpression getFeatureExpression(MatchContext context, RutaStream stream) { | |
resolve(context, stream); | |
return featureExpression; | |
} | |
@Override | |
public String toString() { | |
if (reference != null) { | |
if (comparator != null && argument != null) { | |
return reference + comparator + argument.toString(); | |
} | |
return reference; | |
} | |
if (typeExpression != null) { | |
return typeExpression.toString(); | |
} | |
if (annotationExpression != null) { | |
return annotationExpression.toString(); | |
} | |
if (annotationListExpression != null) { | |
return annotationListExpression.toString(); | |
} | |
return super.toString(); | |
} | |
public String getMatch() { | |
return reference; | |
} | |
public List<String> getFeatureList() { | |
return features; | |
} | |
} |