/*
* 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.traversal.util;
import org.apache.tinkerpop.gremlin.process.traversal.TraversalSource;
import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategies;
import org.apache.tinkerpop.gremlin.structure.Graph;
import java.io.Serializable;
/**
* {@link TraversalSource} is not {@link Serializable}.
* {@code TraversalSourceFactory} can be used to create a serializable representation of a traversal source.
* This is is primarily an internal utility class for use and should not be used by standard users.
*
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
public final class TraversalSourceFactory<T extends TraversalSource> implements Serializable {
private final TraversalStrategies traversalStrategies;
private final Class<T> traversalSourceClass;
public TraversalSourceFactory(final T traversalSource) {
this.traversalSourceClass = (Class<T>) traversalSource.getClass();
this.traversalStrategies = traversalSource.getStrategies();
}
public T createTraversalSource(final Graph graph) {
try {
return this.traversalSourceClass.getConstructor(Graph.class, TraversalStrategies.class).newInstance(graph, this.traversalStrategies);
} catch (final Exception e) {
throw new IllegalStateException(e.getMessage(), e);
}
}
}