Package org.apache.druid.segment.data

Class CompressedVSizeColumnarIntsSupplier

java.lang.Object

org.apache.druid.segment.data.CompressedVSizeColumnarIntsSupplier

All Implemented Interfaces:

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

public class CompressedVSizeColumnarIntsSupplier
extends Object
implements WritableSupplier<ColumnarInts>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	CompressedVSizeColumnarIntsSupplier.CompressedVSizeColumnarInts

Field Summary

Fields

Modifier and Type	Field	Description
static final byte	VERSION

Method Summary

Modifier and Type	Method	Description
static CompressedVSizeColumnarIntsSupplier	fromByteBuffer(ByteBuffer buffer, ByteOrder order, SegmentFileMapper mapper)
static CompressedVSizeColumnarIntsSupplier	fromList(it.unimi.dsi.fastutil.ints.IntList list, int maxValue, int chunkFactor, ByteOrder byteOrder, CompressionStrategy compression, Closer closer)
ColumnarInts	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.
static int	maxIntsInBufferForBytes(int numBytes)
static int	maxIntsInBufferForValue(int maxValue)
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

Field Details

VERSION

public static final byte VERSION

See Also:

• Constant Field Values

Method Details

maxIntsInBufferForBytes

public static int maxIntsInBufferForBytes(int numBytes)

maxIntsInBufferForValue

public static int maxIntsInBufferForValue(int maxValue)

get

public ColumnarInts get()

Specified by:

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

Specified by:

get in interface Supplier<ColumnarInts>

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 CompressedVSizeColumnarIntsSupplier fromByteBuffer(ByteBuffer buffer,
 ByteOrder order,
 SegmentFileMapper mapper)

fromList

public static CompressedVSizeColumnarIntsSupplier fromList(it.unimi.dsi.fastutil.ints.IntList list,
 int maxValue,
 int chunkFactor,
 ByteOrder byteOrder,
 CompressionStrategy compression,
 Closer closer)