| /** |
| * 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.mapreduce; |
| |
| import org.apache.avro.Conversions; |
| import org.apache.avro.generic.GenericData; |
| import org.apache.sqoop.config.ConfigurationConstants; |
| import org.apache.sqoop.lib.LargeObjectLoader; |
| import org.apache.sqoop.lib.SqoopRecord; |
| import org.apache.avro.Schema; |
| import org.apache.avro.generic.GenericRecord; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.sqoop.avro.AvroUtil; |
| |
| import java.io.IOException; |
| import java.sql.SQLException; |
| |
| /** |
| * Imports records by writing them to a Parquet File. |
| */ |
| public abstract class ParquetImportMapper<KEYOUT, VALOUT> |
| extends AutoProgressMapper<LongWritable, SqoopRecord, |
| KEYOUT, VALOUT> { |
| |
| private Schema schema = null; |
| private boolean bigDecimalFormatString = true; |
| private LargeObjectLoader lobLoader = null; |
| private boolean bigDecimalPadding; |
| |
| @Override |
| protected void setup(Context context) |
| throws IOException, InterruptedException { |
| Configuration conf = context.getConfiguration(); |
| schema = getAvroSchema(conf); |
| bigDecimalFormatString = conf.getBoolean( |
| ImportJobBase.PROPERTY_BIGDECIMAL_FORMAT, |
| ImportJobBase.PROPERTY_BIGDECIMAL_FORMAT_DEFAULT); |
| lobLoader = createLobLoader(context); |
| GenericData.get().addLogicalTypeConversion(new Conversions.DecimalConversion()); |
| bigDecimalPadding = conf.getBoolean(ConfigurationConstants.PROP_ENABLE_AVRO_DECIMAL_PADDING, false); |
| } |
| |
| @Override |
| protected void map(LongWritable key, SqoopRecord val, Context context) |
| throws IOException, InterruptedException { |
| try { |
| // Loading of LOBs was delayed until we have a Context. |
| val.loadLargeObjects(lobLoader); |
| } catch (SQLException sqlE) { |
| throw new IOException(sqlE); |
| } |
| |
| GenericRecord record = AvroUtil.toGenericRecord(val.getFieldMap(), schema, |
| bigDecimalFormatString, bigDecimalPadding); |
| write(context, record); |
| } |
| |
| @Override |
| protected void cleanup(Context context) throws IOException { |
| if (null != lobLoader) { |
| lobLoader.close(); |
| } |
| } |
| |
| protected abstract LargeObjectLoader createLobLoader(Context context) throws IOException, InterruptedException; |
| |
| protected abstract Schema getAvroSchema(Configuration configuration); |
| |
| protected abstract void write(Context context, GenericRecord record) throws IOException, InterruptedException; |
| } |