Package org.apache.druid.segment.data

Class CompressedVSizeColumnarMultiIntsSupplier

java.lang.Object

org.apache.druid.segment.data.CompressedVSizeColumnarMultiIntsSupplier

All Implemented Interfaces:

com.google.common.base.Supplier<ColumnarMultiInts>, Supplier<ColumnarMultiInts>, WritableSupplier<ColumnarMultiInts>, Serializer

public class CompressedVSizeColumnarMultiIntsSupplier
extends Object
implements WritableSupplier<ColumnarMultiInts>

Format - byte 1 - version offsets - ColumnarInts of length num of rows + 1 representing offsets of starting index of first element of each row in values index and last element equal to length of values column, the last element in the offsets represents the total length of values column. values - ColumnarInts representing concatenated values of all rows

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CompressedVSizeColumnarMultiIntsSupplier.CompressedVSizeColumnarMultiInts

Method Summary

Modifier and Type	Method	Description
static CompressedVSizeColumnarMultiIntsSupplier	fromByteBuffer(ByteBuffer buffer, ByteOrder order, SegmentFileMapper fileMapper)
static CompressedVSizeColumnarMultiIntsSupplier	fromIterable(Iterable<IndexedInts> objectsIterable, int maxValue, ByteOrder byteOrder, CompressionStrategy compression, Closer closer)
ColumnarMultiInts	get()
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	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

getSerializedSize

public long getSerializedSize()

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.

Specified by:

getSerializedSize in interface Serializer

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.

Specified by:

writeTo in interface Serializer

Throws:

IOException

fromByteBuffer

public static CompressedVSizeColumnarMultiIntsSupplier fromByteBuffer(ByteBuffer buffer,
 ByteOrder order,
 SegmentFileMapper fileMapper)

fromIterable

public static CompressedVSizeColumnarMultiIntsSupplier fromIterable(Iterable<IndexedInts> objectsIterable,
 int maxValue,
 ByteOrder byteOrder,
 CompressionStrategy compression,
 Closer closer)

get

public ColumnarMultiInts get()

Specified by:

get in interface com.google.common.base.Supplier<ColumnarMultiInts>

Specified by:

get in interface Supplier<ColumnarMultiInts>