/*
* 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.tinkerpop.gremlin.process.computer.traversal.strategy.finalization;
import org.apache.tinkerpop.gremlin.process.traversal.Step;
import org.apache.tinkerpop.gremlin.process.traversal.Traversal;
import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategy;
import org.apache.tinkerpop.gremlin.process.traversal.step.GraphComputing;
import org.apache.tinkerpop.gremlin.process.traversal.strategy.AbstractTraversalStrategy;
import org.apache.tinkerpop.gremlin.process.traversal.strategy.finalization.ProfileStrategy;
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper;
import java.util.Collections;
import java.util.Set;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
public final class ComputerFinalizationStrategy extends AbstractTraversalStrategy<TraversalStrategy.FinalizationStrategy> {
private static final ComputerFinalizationStrategy INSTANCE = new ComputerFinalizationStrategy();
private ComputerFinalizationStrategy() {
}
@Override
public void apply(Traversal.Admin<?, ?> traversal) {
if (!TraversalHelper.onGraphComputer(traversal) || !TraversalHelper.isGlobalChild(traversal))
return;
for (final Step<?, ?> step : traversal.getSteps()) {
if (step instanceof GraphComputing)
((GraphComputing) step).onGraphComputer();
}
}
public static ComputerFinalizationStrategy instance() {
return INSTANCE;
}
@Override
public Set<Class<? extends FinalizationStrategy>> applyPrior() {
return Collections.singleton(ProfileStrategy.class);
}
}