| /* |
| * 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); |
| } |
| } |
| } |