| /* |
| * 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; |
| |
| import org.apache.tinkerpop.gremlin.structure.Vertex; |
| import org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONTokens; |
| import org.apache.tinkerpop.gremlin.structure.io.gryo.GryoIo; |
| import org.apache.tinkerpop.gremlin.structure.util.detached.DetachedVertex; |
| import org.apache.tinkerpop.shaded.kryo.Kryo; |
| import org.apache.tinkerpop.shaded.kryo.Serializer; |
| import org.apache.tinkerpop.shaded.kryo.io.Input; |
| import org.apache.tinkerpop.shaded.kryo.io.Output; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.OutputStream; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public class IoXIoRegistry { |
| public static class ConstructorBased extends AbstractIoRegistry { |
| public ConstructorBased() { |
| register(GryoIo.class, IoX.class, null); |
| } |
| } |
| |
| public static class InstanceBased extends AbstractIoRegistry { |
| private static InstanceBased INSTANCE = new InstanceBased(); |
| |
| private InstanceBased() { |
| register(GryoIo.class, IoX.class, null); |
| } |
| |
| public static InstanceBased instance() { |
| return INSTANCE; |
| } |
| } |
| |
| /** |
| * Converts an {@link IoX} to a {@link DetachedVertex}. |
| */ |
| public final static class IoXToVertexSerializer extends Serializer<IoX> { |
| public IoXToVertexSerializer() { |
| } |
| |
| @Override |
| public void write(final Kryo kryo, final Output output, final IoX iox) { |
| final Map<String,Object> props = new HashMap<>(); |
| addSingleProperty("x", iox.toString(), props); |
| final DetachedVertex vertex = new DetachedVertex(100, Vertex.DEFAULT_LABEL, props); |
| try (final OutputStream stream = new ByteArrayOutputStream()) { |
| final Output detachedOutput = new Output(stream); |
| kryo.writeObject(detachedOutput, vertex); |
| |
| // have to remove the first byte because it marks a reference we don't want to have as this |
| // serializer is trying to "act" like a DetachedVertex |
| final byte[] b = detachedOutput.toBytes(); |
| output.write(b, 1, b.length - 1); |
| } catch (Exception ex) { |
| ex.printStackTrace(); |
| } |
| } |
| |
| @Override |
| public IoX read(final Kryo kryo, final Input input, final Class<IoX> ioxClass) { |
| throw new UnsupportedOperationException("IoX writes to DetachedVertex and can't be read back in as IoX"); |
| } |
| |
| private static void addSingleProperty(final String key, final Object value, final Map<String, Object> props) |
| { |
| final List<Map<String, Object>> propertyNames = new ArrayList<>(1); |
| final Map<String,Object> propertyName = new HashMap<>(); |
| propertyName.put(GraphSONTokens.ID, key); |
| propertyName.put(GraphSONTokens.KEY, key); |
| propertyName.put(GraphSONTokens.VALUE, value); |
| propertyNames.add(propertyName); |
| |
| props.put(key, propertyNames); |
| } |
| } |
| } |