Package org.apache.pinot.segment.local.segment.index.readers.forward

Class FixedBytePower2ChunkSVForwardIndexReader

java.lang.Object

org.apache.pinot.segment.local.segment.index.readers.forward.BaseChunkForwardIndexReader

org.apache.pinot.segment.local.segment.index.readers.forward.FixedBytePower2ChunkSVForwardIndexReader

All Implemented Interfaces:

Closeable, AutoCloseable, IndexReader, ForwardIndexReader<ChunkReaderContext>

public final class FixedBytePower2ChunkSVForwardIndexReader
extends BaseChunkForwardIndexReader

Chunk-based single-value raw (non-dictionary-encoded) forward index reader for values of fixed length data type (INT, LONG, FLOAT, DOUBLE).

For data layout, please refer to the documentation for FixedByteChunkSVForwardIndexWriter

Field Summary

Fields

Modifier and Type	Field	Description
static int	VERSION

Fields inherited from class org.apache.pinot.segment.local.segment.index.readers.forward.BaseChunkForwardIndexReader

_chunkDecompressor, _compressionType, _dataBuffer, _dataHeader, _headerEntryChunkOffsetSize, _isCompressed, _isSingleValue, _lengthOfLongestEntry, _numChunks, _numDocsPerChunk, _rawData, _storedType

Constructor Summary

Constructors

Constructor	Description
FixedBytePower2ChunkSVForwardIndexReader(PinotDataBuffer dataBuffer, FieldSpec.DataType valueType)

Method Summary

Modifier and Type	Method	Description
ChunkReaderContext	createContext()
protected ByteBuffer	getChunkBuffer(int docId, ChunkReaderContext context)	Helper method to return the chunk buffer that contains the value at the given document id.
double	getDouble(int docId, ChunkReaderContext context)
float	getFloat(int docId, ChunkReaderContext context)
int	getInt(int docId, ChunkReaderContext context)
long	getLong(int docId, ChunkReaderContext context)

Methods inherited from class org.apache.pinot.segment.local.segment.index.readers.forward.BaseChunkForwardIndexReader

close, decompressChunk, getChunkPosition, getCompressionType, getLengthOfLongestEntry, getStoredType, isDictionaryEncoded, isSingleValue, readValuesSV, readValuesSV, readValuesSV, readValuesSV

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pinot.segment.spi.index.reader.ForwardIndexReader

getBigDecimal, getBytes, getBytesMV, getBytesMV, getDictId, getDictIdMV, getDictIdMV, getDoubleMV, getDoubleMV, getFloatMV, getFloatMV, getIntMV, getIntMV, getLongMV, getLongMV, getNumValuesMV, getString, getStringMV, getStringMV, readDictIds, readValuesMV, readValuesMV, readValuesMV, readValuesMV, readValuesMV, readValuesMV, readValuesSV

Field Detail

VERSION

public static final int VERSION

See Also:

Constant Field Values

Constructor Detail

FixedBytePower2ChunkSVForwardIndexReader

public FixedBytePower2ChunkSVForwardIndexReader(PinotDataBuffer dataBuffer,
                                                FieldSpec.DataType valueType)

Method Detail

createContext

@Nullable
public ChunkReaderContext createContext()

getInt

public int getInt(int docId,
                  ChunkReaderContext context)

getLong

public long getLong(int docId,
                    ChunkReaderContext context)

getFloat

public float getFloat(int docId,
                      ChunkReaderContext context)

getDouble

public double getDouble(int docId,
                        ChunkReaderContext context)

getChunkBuffer

protected ByteBuffer getChunkBuffer(int docId,
                                    ChunkReaderContext context)

Helper method to return the chunk buffer that contains the value at the given document id.

• If the chunk already exists in the reader context, returns the same.
• Otherwise, loads the chunk for the row, and sets it in the reader context.

Overrides:

getChunkBuffer in class BaseChunkForwardIndexReader

Parameters:

docId - Document id

context - Reader context

Returns:

Chunk for the row