| /* |
| * 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.hadoop.structure.io.script; |
| |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.mapreduce.RecordWriter; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.CommonFileOutputFormat; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.HadoopPoolsConfigurable; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.VertexWritable; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| /** |
| * {@link org.apache.tinkerpop.gremlin.hadoop.structure.io.script.ScriptInputFormat} |
| * and ScriptOutputFormat take an arbitrary script and use that script to either |
| * read or write Vertex objects, respectively. This can be considered the most |
| * general InputFormat/OutputFormat possible in that Hadoop-Gremlin uses the user |
| * provided script for all reading/writing. |
| * @see <a href="http://tinkerpop.apache.org/docs/current/reference/#script-io-format">Script I/O Format Reference Documentation</a> |
| * @author Daniel Kuppitz (http://gremlin.guru) |
| */ |
| public final class ScriptOutputFormat extends CommonFileOutputFormat implements HadoopPoolsConfigurable { |
| |
| @Override |
| public RecordWriter<NullWritable, VertexWritable> getRecordWriter(final TaskAttemptContext job) throws IOException, InterruptedException { |
| return getRecordWriter(job, getDataOuputStream(job)); |
| } |
| |
| public RecordWriter<NullWritable, VertexWritable> getRecordWriter(final TaskAttemptContext job, final DataOutputStream outputStream) throws IOException, InterruptedException { |
| return new ScriptRecordWriter(outputStream, job); |
| } |
| } |