org.apache.drill.exec.store.parquet.columnreaders

Class VarLenBinaryReader

java.lang.Object

org.apache.drill.exec.store.parquet.columnreaders.VarLenBinaryReader

public class VarLenBinaryReader
extends Object

Class which handles reading a batch of rows from a set of variable columns

Constructor Summary

Constructors

Constructor and Description
VarLenBinaryReader(ParquetRecordReader parentReader, List<VarLengthColumn<? extends ValueVector>> columns)

Method Summary

Modifier and Type	Method and Description
protected void	handleAndRaise(String s, Exception e)
long	readFields(long recordsToReadInThisPass) Reads as many variable length values as possible.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VarLenBinaryReader

public VarLenBinaryReader(ParquetRecordReader parentReader,
                          List<VarLengthColumn<? extends ValueVector>> columns)

Method Detail

readFields

public long readFields(long recordsToReadInThisPass)
                throws IOException

Reads as many variable length values as possible.

Parameters:

recordsToReadInThisPass - - the number of records recommended for reading form the reader

Returns:

- the number of fixed length fields that will fit in the batch

Throws:

IOException

handleAndRaise

protected void handleAndRaise(String s,
                              Exception e)