| /* |
| * 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.remote.traversal; |
| |
| import org.apache.tinkerpop.gremlin.process.remote.traversal.step.map.RemoteStep; |
| import org.apache.tinkerpop.gremlin.process.traversal.Bytecode; |
| import org.apache.tinkerpop.gremlin.process.traversal.Step; |
| import org.apache.tinkerpop.gremlin.process.traversal.Traversal; |
| import org.apache.tinkerpop.gremlin.process.traversal.TraversalSideEffects; |
| import org.apache.tinkerpop.gremlin.process.traversal.TraversalStrategies; |
| import org.apache.tinkerpop.gremlin.process.traversal.Traverser; |
| import org.apache.tinkerpop.gremlin.process.traversal.TraverserGenerator; |
| import org.apache.tinkerpop.gremlin.process.traversal.step.TraversalParent; |
| import org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.TraverserRequirement; |
| import org.apache.tinkerpop.gremlin.structure.Graph; |
| |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| /** |
| * This is a stub implementation for {@link RemoteTraversal} and requires that the {@link #nextTraverser()} method |
| * is implemented from {@link Traversal.Admin}. It is this method that gets called from {@link RemoteStep} when |
| * the {@link Traversal} is iterated. |
| * |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public abstract class AbstractRemoteTraversal<S,E> implements RemoteTraversal<S,E> { |
| |
| /** |
| * Note that internally {@code #nextTraverser()} is called from within a loop (specifically in |
| * {@link AbstractStep#next()} that breaks properly when a {@code NoSuchElementException} is thrown. In |
| * other words the "results" should be iterated to force that failure. |
| */ |
| @Override |
| public abstract Traverser.Admin<E> nextTraverser(); |
| |
| @Override |
| public TraversalSideEffects getSideEffects() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public Bytecode getBytecode() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public List<Step> getSteps() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public <S2, E2> Admin<S2, E2> addStep(final int index, final Step<?, ?> step) throws IllegalStateException { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public <S2, E2> Admin<S2, E2> removeStep(final int index) throws IllegalStateException { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public void applyStrategies() throws IllegalStateException { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public TraverserGenerator getTraverserGenerator() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public Set<TraverserRequirement> getTraverserRequirements() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public void setSideEffects(final TraversalSideEffects sideEffects) { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public void setStrategies(final TraversalStrategies strategies) { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public TraversalStrategies getStrategies() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public void setParent(final TraversalParent step) { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public TraversalParent getParent() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public Admin<S, E> clone() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public boolean isLocked() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public Optional<Graph> getGraph() { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| |
| @Override |
| public void setGraph(final Graph graph) { |
| throw new UnsupportedOperationException("Remote traversals do not support this method"); |
| } |
| } |