| /* |
| * 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.annotation; |
| |
| import org.apache.uima.cas.CAS; |
| import org.apache.uima.cas.FeatureStructure; |
| import org.apache.uima.cas.impl.CASImpl; |
| import org.apache.uima.cas.impl.LowLevelCAS; |
| import org.apache.uima.cas.text.AnnotationFS; |
| import org.apache.uima.ruta.RutaStream; |
| import org.apache.uima.ruta.rule.MatchContext; |
| |
| |
| /** |
| * An expression referring to an annotation identified by its address. |
| * |
| */ |
| public class AnnotationAddressExpression extends AbstractAnnotationExpression { |
| |
| private String address; |
| |
| public AnnotationAddressExpression(String address) { |
| super(); |
| this.address = address; |
| } |
| |
| |
| @Override |
| public AnnotationFS getAnnotation(MatchContext context, RutaStream stream) { |
| Integer ref = Integer.valueOf(address); |
| CAS cas = stream.getCas(); |
| if(cas instanceof CASImpl) { |
| CASImpl casImpl = (CASImpl) cas; |
| LowLevelCAS lowLevelCAS = casImpl.getLowLevelCAS(); |
| FeatureStructure fs = lowLevelCAS.ll_getFSForRef(ref); |
| if(fs instanceof AnnotationFS) { |
| return (AnnotationFS) fs; |
| } |
| } |
| return null; |
| } |
| |
| |
| public String getAddress() { |
| return address; |
| } |
| |
| |
| } |