Java tutorial
/******************************************************************************* * * Pentaho Big Data * * Copyright (C) 2002-2017 by Hitachi Vantara : http://www.pentaho.com * ******************************************************************************* * * Licensed 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.pentaho.hadoop.mapreduce.converter.converters; import org.apache.hadoop.io.LongWritable; import org.apache.hadoop.io.Text; import org.pentaho.di.core.row.ValueMetaInterface; import org.pentaho.hadoop.mapreduce.converter.TypeConversionException; import org.pentaho.hadoop.mapreduce.converter.spi.ITypeConverter; /** * Converts {@link LongWritable} objects to {@link Text} objects */ public class LongWritableToTextConverter implements ITypeConverter<LongWritable, Text> { @Override public boolean canConvert(Class from, Class to) { return LongWritable.class.equals(from) && Text.class.equals(to); } @Override public Text convert(ValueMetaInterface meta, LongWritable obj) throws TypeConversionException { Text result = new Text(); result.set(String.valueOf(obj.get())); return result; } }