/*
* 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.uima.ruta.RutaBlock;
import org.apache.uima.ruta.RutaStream;
import org.apache.uima.ruta.expression.RutaExpression;
import org.apache.uima.ruta.expression.bool.BooleanExpression;
import org.apache.uima.ruta.expression.list.ListExpression;
import org.apache.uima.ruta.expression.number.NumberExpression;
import org.apache.uima.ruta.expression.string.StringExpression;
import org.apache.uima.ruta.expression.type.TypeExpression;
import org.apache.uima.ruta.rule.RuleElement;
import org.apache.uima.ruta.rule.RuleMatch;
import org.apache.uima.ruta.visitor.InferenceCrowd;
public class RemoveAction extends AbstractRutaAction {
private String var;
private List<RutaExpression> elements;
public RemoveAction(String var, List<RutaExpression> list) {
super();
this.var = var;
this.elements = list;
}
public String getListExpr() {
return var;
}
public List<RutaExpression> getElements() {
return elements;
}
@SuppressWarnings({ "rawtypes" })
@Override
public void execute(RuleMatch match, RuleElement element, RutaStream stream, InferenceCrowd crowd) {
RutaBlock parent = element.getParent();
List list = parent.getEnvironment().getVariableValue(var, List.class);
List<Object> toRemove = new ArrayList<Object>();
for (Object entry : list) {
Object value1 = getValue(entry, parent, stream);
for (RutaExpression arg : elements) {
if (arg instanceof ListExpression) {
ListExpression l = (ListExpression) arg;
List list2 = l.getList(parent, stream);
for (Object object : list2) {
Object value2 = getValue(object, parent, stream);
if (value1.equals(value2)) {
toRemove.add(entry);
}
}
} else {
Object value2 = getValue(arg, parent, stream);
if (value1.equals(value2)) {
toRemove.add(entry);
}
}
}
}
for (Object object : toRemove) {
list.remove(object);
}
parent.getEnvironment().setVariableValue(var, list);
}
private Object getValue(Object obj, RutaBlock parent, RutaStream stream) {
if (obj instanceof NumberExpression) {
return ((NumberExpression) obj).getDoubleValue(parent, null, stream);
} else if (obj instanceof BooleanExpression) {
return ((BooleanExpression) obj).getBooleanValue(parent, null, stream);
} else if (obj instanceof TypeExpression) {
return ((TypeExpression) obj).getType(parent);
} else if (obj instanceof StringExpression) {
return ((StringExpression) obj).getStringValue(parent, null, stream);
}
return null;
}
}