/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed 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 eu.stratosphere.compiler.dag;
import eu.stratosphere.util.Visitor;
final class InterestingPropertiesClearer implements Visitor<OptimizerNode> {
static final InterestingPropertiesClearer INSTANCE = new InterestingPropertiesClearer();
@Override
public boolean preVisit(OptimizerNode visitable) {
if (visitable.getInterestingProperties() != null) {
visitable.clearInterestingProperties();
return true;
} else {
return false;
}
}
@Override
public void postVisit(OptimizerNode visitable) {}
}