com.facebook.presto.parquet.batchreader.decoders.delta

Class BinaryDeltaValuesDecoder

java.lang.Object

com.facebook.presto.parquet.batchreader.decoders.delta.BinaryDeltaValuesDecoder

All Implemented Interfaces:

ValuesDecoder, ValuesDecoder.BinaryValuesDecoder

public class BinaryDeltaValuesDecoder
extends Object
implements ValuesDecoder.BinaryValuesDecoder

Note: this is not an optimized values decoder. It makes use of the existing Parquet decoder. Given that this type encoding is not a common one, just use the existing one provided by Parquet library and add a wrapper around it that satisfies the ValuesDecoder.BinaryValuesDecoder interface.

Nested Class Summary

Nested classes/interfaces inherited from interface com.facebook.presto.parquet.batchreader.decoders.ValuesDecoder.BinaryValuesDecoder

ValuesDecoder.BinaryValuesDecoder.ValueBuffer

Nested classes/interfaces inherited from interface com.facebook.presto.parquet.batchreader.decoders.ValuesDecoder

ValuesDecoder.BinaryValuesDecoder, ValuesDecoder.BooleanValuesDecoder, ValuesDecoder.Int32ValuesDecoder, ValuesDecoder.Int64TimestampMicrosValuesDecoder, ValuesDecoder.Int64ValuesDecoder, ValuesDecoder.TimestampValuesDecoder

Constructor Summary

Constructors

Constructor and Description
BinaryDeltaValuesDecoder(ParquetEncoding encoding, int valueCount, org.apache.parquet.bytes.ByteBufferInputStream bufferInputStream)

Method Summary

Modifier and Type	Method and Description
int	readIntoBuffer(byte[] byteBuffer, int bufferIndex, int[] offsets, int offsetIndex, ValuesDecoder.BinaryValuesDecoder.ValueBuffer valueBuffer)
ValuesDecoder.BinaryValuesDecoder.ValueBuffer	readNext(int length)
void	skip(int length)

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryDeltaValuesDecoder

public BinaryDeltaValuesDecoder(ParquetEncoding encoding,
                                int valueCount,
                                org.apache.parquet.bytes.ByteBufferInputStream bufferInputStream)
                         throws IOException

Throws:

IOException

Method Detail

readNext

public ValuesDecoder.BinaryValuesDecoder.ValueBuffer readNext(int length)
                                                       throws IOException

Specified by:

readNext in interface ValuesDecoder.BinaryValuesDecoder

Throws:

IOException

readIntoBuffer

public int readIntoBuffer(byte[] byteBuffer,
                          int bufferIndex,
                          int[] offsets,
                          int offsetIndex,
                          ValuesDecoder.BinaryValuesDecoder.ValueBuffer valueBuffer)

Specified by:

readIntoBuffer in interface ValuesDecoder.BinaryValuesDecoder

skip

public void skip(int length)
          throws IOException

Specified by:

skip in interface ValuesDecoder.BinaryValuesDecoder

Throws:

IOException