/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.drools.core.phreak;
import org.drools.core.spi.Tuple;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
public class AbstractReactiveObject implements ReactiveObject {
private Collection<Tuple> lts;
public void addLeftTuple(Tuple leftTuple) {
if (lts == null) {
lts = new HashSet<Tuple>();
}
lts.add(leftTuple);
}
public Collection<Tuple> getLeftTuples() {
return lts != null ? lts : Collections.emptyList();
}
protected void notifyModification() {
ReactiveObjectUtil.notifyModification(this);
}
@Override
public void removeLeftTuple(Tuple leftTuple) {
lts.remove(leftTuple);
}
}