Package org.apache.druid.segment.data

Class CompressedBlockSerializer

java.lang.Object

org.apache.druid.segment.data.CompressedBlockSerializer

All Implemented Interfaces:

Serializer

public class CompressedBlockSerializer
extends Object
implements Serializer

Constructor Summary

Constructors

Constructor	Description
CompressedBlockSerializer(SegmentWriteOutMedium segmentWriteOutMedium, CompressionStrategy compression, int blockSize, Closer closer)

Method Summary

Modifier and Type	Method	Description
void	addValue(byte[] bytes)
void	addValue(ByteBuffer bytes)
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.java.util.common.io.smoosh.FileSmoosher) call.
void	open()
void	writeTo(WritableByteChannel channel, FileSmoosher smoosher)	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

Constructor Detail

CompressedBlockSerializer

public CompressedBlockSerializer(SegmentWriteOutMedium segmentWriteOutMedium,
                                 CompressionStrategy compression,
                                 int blockSize,
                                 Closer closer)

Method Detail

open

public void open()
          throws IOException

Throws:

IOException

addValue

public void addValue(byte[] bytes)
              throws IOException

Throws:

IOException

addValue

public void addValue(ByteBuffer bytes)
              throws IOException

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.java.util.common.io.smoosh.FileSmoosher) call.

Specified by:

getSerializedSize in interface Serializer

Throws:

IOException

writeTo

public void writeTo(WritableByteChannel channel,
                    FileSmoosher smoosher)
             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 FileSmoosher], where additional channels can be created via FileSmoosher.addWithSmooshedWriter(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