| /* |
| * 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.structure.io.binary.types; |
| |
| import org.apache.tinkerpop.gremlin.structure.io.binary.DataType; |
| import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryReader; |
| import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryWriter; |
| import org.apache.tinkerpop.gremlin.process.traversal.Path; |
| import org.apache.tinkerpop.gremlin.process.traversal.step.util.MutablePath; |
| import org.apache.tinkerpop.gremlin.structure.io.Buffer; |
| import org.apache.tinkerpop.gremlin.structure.util.reference.ReferenceFactory; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public class PathSerializer extends SimpleTypeSerializer<Path> { |
| |
| public PathSerializer() { |
| super(DataType.PATH); |
| } |
| |
| @Override |
| protected Path readValue(final Buffer buffer, final GraphBinaryReader context) throws IOException { |
| final MutablePath path = (MutablePath) MutablePath.make(); |
| final List<Set<String>> labels = context.read(buffer); |
| final List<Object> objects = context.read(buffer); |
| |
| if (labels.size() != objects.size()) |
| throw new IllegalStateException("Format for Path object requires that the labels and objects fields be of the same length"); |
| |
| for (int ix = 0; ix < labels.size(); ix++) { |
| path.extend(objects.get(ix), labels.get(ix)); |
| } |
| |
| return ReferenceFactory.detach(path); |
| } |
| |
| @Override |
| protected void writeValue(final Path value, final Buffer buffer, final GraphBinaryWriter context) throws IOException { |
| context.write(value.labels(), buffer); |
| context.write(value.objects(), buffer); |
| } |
| } |