protected RecordReader<LongWritable, T> createDBRecordReader(DBInputSplit split,
Configuration conf) throws IOException {
DBConfiguration dbConf = getDBConf();
@SuppressWarnings("unchecked")
Class<T> inputClass = (Class<T>) (dbConf.getInputClass());
String dbProductName = getDBProductName();
LOG.debug("Creating db record reader for db product: " + dbProductName);
try {
if (dbProductName.startsWith("MYSQL")) {
return new MySQLDataDrivenDBRecordReader<T>(split, inputClass,
conf, getConnection(), dbConf, dbConf.getInputConditions(),
dbConf.getInputFieldNames(), dbConf.getInputTableName());
} else {
return new DataDrivenDBRecordReader<T>(split, inputClass,
conf, getConnection(), dbConf, dbConf.getInputConditions(),
dbConf.getInputFieldNames(), dbConf.getInputTableName(),
dbProductName);
}
} catch (SQLException ex) {
throw new IOException(ex.getMessage());
}
}