/* | |
* 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.action; | |
import java.util.ArrayList; | |
import java.util.List; | |
import org.apache.commons.collections.ListUtils; | |
import org.apache.uima.ruta.RutaStream; | |
import org.apache.uima.ruta.expression.bool.IBooleanExpression; | |
import org.apache.uima.ruta.expression.list.ListExpression; | |
import org.apache.uima.ruta.rule.MatchContext; | |
import org.apache.uima.ruta.rule.RuleElement; | |
import org.apache.uima.ruta.visitor.InferenceCrowd; | |
public class MergeAction extends AbstractRutaAction { | |
@SuppressWarnings("rawtypes") | |
private List<ListExpression> lists; | |
private IBooleanExpression unionExpr; | |
private String target; | |
@SuppressWarnings("rawtypes") | |
public MergeAction(IBooleanExpression union, String target, List<ListExpression> list) { | |
super(); | |
this.unionExpr = union; | |
this.target = target; | |
this.lists = list; | |
} | |
@SuppressWarnings({ "unchecked", "rawtypes" }) | |
@Override | |
public void execute(MatchContext context, RutaStream stream, InferenceCrowd crowd) { | |
context.getRuleMatch(); | |
RuleElement element = context.getElement(); | |
boolean union = unionExpr.getBooleanValue(context, stream); | |
List<Object> list = new ArrayList<Object>(); | |
if (union) { | |
for (ListExpression<Object> each : lists) { | |
list.addAll(each.getList(context, stream)); | |
} | |
} else { | |
List<Object> lastList = null; | |
for (int i = 1; i < lists.size(); i++) { | |
List l2 = lists.get(i).getList(context, stream); | |
if (lastList != null) { | |
lastList = ListUtils.intersection(lastList, l2); | |
} else { | |
List l1 = lists.get(i - 1).getList(context, stream); | |
lastList = ListUtils.intersection(l1, l2); | |
} | |
} | |
list = lastList; | |
} | |
if (list != null) { | |
element.getParent().getEnvironment().setVariableValue(target, list); | |
} | |
} | |
public IBooleanExpression getUnion() { | |
return unionExpr; | |
} | |
@SuppressWarnings("rawtypes") | |
public List<ListExpression> getLists() { | |
return lists; | |
} | |
public String getTarget() { | |
return target; | |
} | |
} |