Package io.deephaven.extensions.barrage.chunk

Class VectorChunkReader

java.lang.Object

io.deephaven.extensions.barrage.chunk.VectorChunkReader

All Implemented Interfaces:

ChunkReader

public class VectorChunkReader
extends Object
implements ChunkReader

Nested Class Summary

Nested classes/interfaces inherited from interface io.deephaven.extensions.barrage.chunk.ChunkReader

ChunkReader.Factory, ChunkReader.TypeInfo

Constructor Summary

Constructors

Constructor	Description
VectorChunkReader(StreamReaderOptions options, ChunkReader.TypeInfo typeInfo, ChunkReader.Factory chunkReaderFactory)

Method Summary

Modifier and Type	Method	Description
WritableObjectChunk<Vector<?>,Values>	readChunk(Iterator<ChunkInputStreamGenerator.FieldNodeInfo> fieldNodeIter, PrimitiveIterator.OfLong bufferInfoIter, DataInput is, WritableChunk<Values> outChunk, int outOffset, int totalRows)	Reads the given DataInput to extract the next Arrow buffer as a Deephaven Chunk.

Methods inherited from class java.lang.Object

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

Constructor Details

VectorChunkReader

public VectorChunkReader(StreamReaderOptions options,
 ChunkReader.TypeInfo typeInfo,
 ChunkReader.Factory chunkReaderFactory)

Method Details

readChunk

public WritableObjectChunk<Vector<?>,Values> readChunk(Iterator<ChunkInputStreamGenerator.FieldNodeInfo> fieldNodeIter,
 PrimitiveIterator.OfLong bufferInfoIter,
 DataInput is,
 WritableChunk<Values> outChunk,
 int outOffset,
 int totalRows)
                                                throws IOException

Description copied from interface: ChunkReader

Reads the given DataInput to extract the next Arrow buffer as a Deephaven Chunk.

Specified by:

readChunk in interface ChunkReader

Parameters:

fieldNodeIter - iterator to read fields from the stream

bufferInfoIter - iterator to read buffers from the stream

is - input stream containing buffers to be read

outChunk - chunk to write to

outOffset - offset within the outChunk to begin writing

totalRows - total rows to write to the outChunk

Returns:

a Chunk containing the data from the stream

Throws:

IOException - if an error occurred while reading the stream