/* | |
* 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.Collection; | |
import java.util.HashSet; | |
import java.util.List; | |
import org.apache.uima.ruta.RutaStream; | |
import org.apache.uima.ruta.expression.bool.IBooleanExpression; | |
import org.apache.uima.ruta.expression.number.INumberExpression; | |
import org.apache.uima.ruta.expression.string.IStringExpression; | |
import org.apache.uima.ruta.expression.type.ITypeExpression; | |
import org.apache.uima.ruta.rule.MatchContext; | |
import org.apache.uima.ruta.rule.RuleElement; | |
import org.apache.uima.ruta.visitor.InferenceCrowd; | |
public class RemoveDuplicateAction extends AbstractRutaAction { | |
private String var; | |
public RemoveDuplicateAction(String var) { | |
super(); | |
this.var = var; | |
} | |
public String getListExpr() { | |
return var; | |
} | |
@SuppressWarnings({ "rawtypes" }) | |
@Override | |
public void execute(MatchContext context, RutaStream stream, InferenceCrowd crowd) { | |
RuleElement element = context.getElement(); | |
List list = element.getParent().getEnvironment().getVariableValue(var, List.class, stream); | |
Collection<Object> values = new HashSet<Object>(); | |
List<Object> result = new ArrayList<Object>(); | |
for (Object each : list) { | |
Object obj = getValue(each, context, stream); | |
if (!values.contains(obj)) { | |
result.add(each); | |
values.add(obj); | |
} | |
} | |
element.getParent().getEnvironment().setVariableValue(var, result); | |
} | |
private Object getValue(Object obj, MatchContext context, RutaStream stream) { | |
if (obj instanceof INumberExpression) { | |
return ((INumberExpression) obj).getDoubleValue(context, stream); | |
} else if (obj instanceof IBooleanExpression) { | |
return ((IBooleanExpression) obj).getBooleanValue(context, stream); | |
} else if (obj instanceof ITypeExpression) { | |
return ((ITypeExpression) obj).getType(context, stream); | |
} else if (obj instanceof IStringExpression) { | |
return ((IStringExpression) obj).getStringValue(context, stream); | |
} | |
return obj; | |
} | |
} |