Java tutorial
/* * 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 com.ricemap.spateDB.mapred; import java.io.IOException; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.io.IntWritable; import org.apache.hadoop.mapred.FileOutputFormat; import org.apache.hadoop.mapred.JobConf; import org.apache.hadoop.mapred.RecordWriter; import org.apache.hadoop.util.Progressable; import com.ricemap.spateDB.core.CellInfo; import com.ricemap.spateDB.core.SpatialSite; import com.ricemap.spateDB.shape.Shape; public class RTreeGridOutputFormat<S extends Shape> extends FileOutputFormat<IntWritable, S> { @Override public RecordWriter<IntWritable, S> getRecordWriter(FileSystem ignored, JobConf job, String name, Progressable progress) throws IOException { // Get grid info CellInfo[] cellsInfo = SpatialSite.getCells(job); boolean pack = job.getBoolean(SpatialSite.PACK_CELLS, false); boolean expand = job.getBoolean(SpatialSite.EXPAND_CELLS, false); RTreeGridRecordWriter<S> writer = new RTreeGridRecordWriter<S>(job, name, cellsInfo, pack, expand); writer.setStockObject((S) SpatialSite.createStockShape(job)); return writer; } }