| /* |
| * 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.commons.collections.IteratorUtils; |
| import org.apache.tinkerpop.gremlin.structure.Property; |
| 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.structure.VertexProperty; |
| import org.apache.tinkerpop.gremlin.structure.io.Buffer; |
| import org.apache.tinkerpop.gremlin.structure.util.detached.DetachedVertexProperty; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public class VertexPropertySerializer extends SimpleTypeSerializer<VertexProperty> { |
| |
| public VertexPropertySerializer() { |
| super(DataType.VERTEXPROPERTY); |
| } |
| |
| @Override |
| protected VertexProperty readValue(final Buffer buffer, final GraphBinaryReader context) throws IOException { |
| final DetachedVertexProperty.Builder builder = DetachedVertexProperty.build() |
| .setId(context.read(buffer)) |
| .setLabel(context.readValue(buffer, String.class, false)) |
| .setValue(context.read(buffer)); |
| |
| // discard the parent vertex - we only send "references" |
| context.read(buffer); |
| |
| final List<Property> properties = context.read(buffer); |
| if (properties != null && !properties.isEmpty()) { |
| for (Property p : properties) builder.addProperty(p); |
| } |
| |
| return builder.create(); |
| } |
| |
| @Override |
| protected void writeValue(final VertexProperty value, final Buffer buffer, final GraphBinaryWriter context) throws IOException { |
| context.write(value.id(), buffer); |
| context.writeValue(value.label(), buffer, false); |
| context.write(value.value(), buffer); |
| |
| // we don't serialize the parent vertex, let's hold a place for it |
| context.write(null, buffer); |
| |
| final List<?> asList = value.graph().features().vertex().supportsMetaProperties() ? |
| IteratorUtils.toList(value.properties()) : |
| Collections.emptyList(); |
| context.write(asList, buffer); |
| } |
| } |