/*
* 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.example.extensions;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.uima.cas.Type;
import org.apache.uima.cas.text.AnnotationFS;
import org.apache.uima.ruta.BlockApply;
import org.apache.uima.ruta.RutaBlock;
import org.apache.uima.ruta.RutaStatement;
import org.apache.uima.ruta.RutaStream;
import org.apache.uima.ruta.ScriptApply;
import org.apache.uima.ruta.rule.AbstractRule;
import org.apache.uima.ruta.rule.AbstractRuleMatch;
import org.apache.uima.ruta.rule.RuleApply;
import org.apache.uima.ruta.rule.RuleMatch;
import org.apache.uima.ruta.rule.RutaRule;
import org.apache.uima.ruta.rule.RutaRuleElement;
import org.apache.uima.ruta.visitor.InferenceCrowd;
/**
* Exemplary implementation of a block extension, which applied its rules in reverse order.
*
*/
public class ExampleBlock extends RutaBlock {
public ExampleBlock(RutaBlock parent,
String defaultNamespace) {
super(parent, defaultNamespace);
}
@Override
public ScriptApply apply(RutaStream stream, InferenceCrowd crowd) {
BlockApply result = new BlockApply(this);
crowd.beginVisit(this, result);
RuleApply apply = rule.apply(stream, crowd, true);
for (AbstractRuleMatch<? extends AbstractRule> eachMatch : apply.getList()) {
if (eachMatch.matched()) {
List<AnnotationFS> matchedAnnotations = ((RuleMatch) eachMatch).getMatchedAnnotations(null,
null);
if (matchedAnnotations == null || matchedAnnotations.isEmpty()) {
continue;
}
AnnotationFS each = matchedAnnotations.get(0);
if (each == null) {
continue;
}
List<Type> types = ((RutaRuleElement) rule.getRuleElements().get(0)).getMatcher().getTypes(
getParent() == null ? this : getParent(), stream);
for (Type eachType : types) {
RutaStream window = stream.getWindowStream(each, eachType);
List<RutaStatement> elements = new ArrayList<RutaStatement>(getElements());
Collections.reverse(elements);
for (RutaStatement element : elements) {
if (element != null) {
element.apply(window, crowd);
}
}
}
}
}
crowd.endVisit(this, result);
return result;
}
}