| /* |
| * 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; |
| |
| import org.apache.tinkerpop.gremlin.process.traversal.Step; |
| import org.apache.tinkerpop.gremlin.process.traversal.Traverser; |
| import org.apache.tinkerpop.gremlin.process.traversal.traverser.util.AbstractTraverser; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public class O_Traverser<T> extends AbstractTraverser<T> { |
| |
| protected Set<String> tags = null; |
| |
| protected O_Traverser() { |
| } |
| |
| public O_Traverser(final T t) { |
| super(t); |
| } |
| |
| |
| public Set<String> getTags() { |
| if (null == this.tags) this.tags = new HashSet<>(); |
| return this.tags; |
| } |
| |
| @Override |
| public <R> Admin<R> split(final R r, final Step<T, R> step) { |
| final O_Traverser<R> clone = (O_Traverser<R>) super.split(r, step); |
| if (null != this.tags) |
| clone.tags = new HashSet<>(this.tags); |
| return clone; |
| } |
| |
| @Override |
| public Admin<T> split() { |
| final O_Traverser<T> clone = (O_Traverser<T>) super.split(); |
| if (null != this.tags) |
| clone.tags = new HashSet<>(this.tags); |
| return clone; |
| } |
| |
| @Override |
| public void merge(final Traverser.Admin<?> other) { |
| super.merge(other); |
| if (!other.getTags().isEmpty()) { |
| if (this.tags == null) this.tags = new HashSet<>(); |
| this.tags.addAll(other.getTags()); |
| } |
| } |
| } |