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 org.apache.sqoop.connector.hdfs.hdfsWriter; import com.google.common.base.Charsets; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import org.apache.hadoop.fs.Path; import org.apache.hadoop.io.compress.CompressionCodec; import org.apache.sqoop.connector.hdfs.HdfsConstants; import java.io.BufferedWriter; import java.io.DataOutputStream; import java.io.IOException; import java.io.OutputStreamWriter; public class HdfsTextWriter extends GenericHdfsWriter { private BufferedWriter filewriter; @Override public void initialize(Path filepath, Configuration conf, CompressionCodec codec) throws IOException { FileSystem fs = filepath.getFileSystem(conf); DataOutputStream filestream = fs.create(filepath, false); if (codec != null) { filewriter = new BufferedWriter(new OutputStreamWriter( codec.createOutputStream(filestream, codec.createCompressor()), Charsets.UTF_8)); } else { filewriter = new BufferedWriter(new OutputStreamWriter(filestream, Charsets.UTF_8)); } } @Override public void write(String csv) throws IOException { filewriter.write(csv + HdfsConstants.DEFAULT_RECORD_DELIMITER); } @Override public void destroy() throws IOException { filewriter.close(); } }