Package org.apache.druid.segment.data

Class V3CompressedVSizeColumnarMultiIntsSerializer

java.lang.Object

org.apache.druid.segment.data.ColumnarMultiIntsSerializer

org.apache.druid.segment.data.V3CompressedVSizeColumnarMultiIntsSerializer

All Implemented Interfaces:

ColumnarIntsSerializer, Serializer

public class V3CompressedVSizeColumnarMultiIntsSerializer
extends ColumnarMultiIntsSerializer

Streams array of integers out in the binary format described by V3CompressedVSizeColumnarMultiIntsSupplier

Method Summary

Modifier and Type	Method	Description
void	addValues(IndexedInts ints)
static V3CompressedVSizeColumnarMultiIntsSerializer	create(String columnName, SegmentWriteOutMedium segmentWriteOutMedium, String filenameBase, int maxValue, CompressionStrategy compression, int fileSizeLimit)	Creates a new serializer.
long	getSerializedSize()	Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.segment.file.SegmentFileBuilder) call.
void	open()
void	writeTo(WritableByteChannel channel, SegmentFileBuilder fileBuilder)	Writes the serialized form of this object.

Methods inherited from class java.lang.Object

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

Method Details

create

public static V3CompressedVSizeColumnarMultiIntsSerializer create(String columnName,
 SegmentWriteOutMedium segmentWriteOutMedium,
 String filenameBase,
 int maxValue,
 CompressionStrategy compression,
 int fileSizeLimit)

Creates a new serializer.

Parameters:

columnName - name of the column to write

segmentWriteOutMedium - supplier of temporary files

filenameBase - base filename to be used for secondary files, if multiple files are needed

maxValue - maximum integer value that will be written to the column

compression - compression strategy to apply

fileSizeLimit - limit for files created by the writer. In production code, this should always be GenericIndexedWriter.MAX_FILE_SIZE. The parameter is exposed only for testing.

open

public void open()
          throws IOException

Throws:

IOException

addValues

public void addValues(IndexedInts ints)
               throws IOException

Specified by:

addValues in class ColumnarMultiIntsSerializer

Throws:

IOException

getSerializedSize

public long getSerializedSize()
                       throws IOException

Description copied from interface: Serializer

Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a Serializer.writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.segment.file.SegmentFileBuilder) call.

Throws:

IOException

writeTo

public void writeTo(WritableByteChannel channel,
 SegmentFileBuilder fileBuilder)
             throws IOException

Description copied from interface: Serializer

Writes the serialized form of this object. The entire object may be written to the provided channel, or the object may be split over the provided channel and files added to the {@link SegmentFileBuilder], where additional channels can be created via SegmentFileBuilder.addWithChannel(String, long). The latter approach is useful when the serialized form of the object is too large for a single smoosh container. At the time this javadoc was written, the max smoosh container size is limit to the max ByteBuffer size.

Throws:

IOException