| /* |
| * 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.traverser.util; |
| |
| import org.apache.tinkerpop.gremlin.process.traversal.Traversal; |
| import org.apache.tinkerpop.gremlin.process.traversal.TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_LP_O_P_S_SE_SL_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_LP_O_S_SE_SL_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_O_S_SE_SL_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.B_O_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.LP_O_OB_P_S_SE_SL_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.LP_O_OB_S_SE_SL_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.O_OB_S_SE_SL_TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.TraverserGeneratorFactory; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.TraverserRequirement; |
| import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; |
| |
| import java.util.Set; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public class DefaultTraverserGeneratorFactory implements TraverserGeneratorFactory { |
| |
| private static DefaultTraverserGeneratorFactory INSTANCE = new DefaultTraverserGeneratorFactory(); |
| |
| public static DefaultTraverserGeneratorFactory instance() { |
| return INSTANCE; |
| } |
| |
| private DefaultTraverserGeneratorFactory() { |
| } |
| |
| @Override |
| public TraverserGenerator getTraverserGenerator(final Set<TraverserRequirement> requirements) { |
| if (requirements.contains(TraverserRequirement.ONE_BULK)) { |
| if (O_OB_S_SE_SL_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return O_OB_S_SE_SL_TraverserGenerator.instance(); |
| |
| if (LP_O_OB_S_SE_SL_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return LP_O_OB_S_SE_SL_TraverserGenerator.instance(); |
| |
| if (LP_O_OB_P_S_SE_SL_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return LP_O_OB_P_S_SE_SL_TraverserGenerator.instance(); |
| } else { |
| if (B_O_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return B_O_TraverserGenerator.instance(); |
| |
| if (B_O_S_SE_SL_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return B_O_S_SE_SL_TraverserGenerator.instance(); |
| |
| if (B_LP_O_S_SE_SL_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return B_LP_O_S_SE_SL_TraverserGenerator.instance(); |
| |
| if (B_LP_O_P_S_SE_SL_TraverserGenerator.instance().getProvidedRequirements().containsAll(requirements)) |
| return B_LP_O_P_S_SE_SL_TraverserGenerator.instance(); |
| } |
| |
| throw new IllegalStateException("The provided traverser generator factory does not support the requirements of the traversal: " + this.getClass().getCanonicalName() + requirements); |
| } |
| } |