KettleTypeToBooleanWritableConverter.java

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 * Pentaho Big Data
 *
 * Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
 *
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 * 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
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 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.pentaho.hadoop.mapreduce.converter.converters;

import org.apache.hadoop.io.BooleanWritable;
import org.pentaho.di.core.row.ValueMetaInterface;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.hadoop.mapreduce.converter.TypeConversionException;
import org.pentaho.hadoop.mapreduce.converter.TypeConverterFactory;
import org.pentaho.hadoop.mapreduce.converter.spi.ITypeConverter;

/**
 * Converts any Kettle object to an {@link BooleanWritable} object
 */
public class KettleTypeToBooleanWritableConverter implements ITypeConverter<Object, BooleanWritable> {
  @Override
  public boolean canConvert( Class from, Class to ) {
    return TypeConverterFactory.isKettleType( from ) && BooleanWritable.class.equals( to );
  }

  @Override
  public BooleanWritable convert( ValueMetaInterface meta, Object obj ) throws TypeConversionException {
    try {
      BooleanWritable result = new BooleanWritable();
      result.set( meta.getBoolean( obj ) );
      return result;
    } catch ( Exception ex ) {
      throw new TypeConversionException( BaseMessages
        .getString( TypeConverterFactory.class, "ErrorConverting", BooleanWritable.class.getSimpleName(), obj ), ex );
    }
  }
}