org.apache.hadoop.hbase.io.encoding

Class AbstractDataBlockEncoder

java.lang.Object

org.apache.hadoop.hbase.io.encoding.AbstractDataBlockEncoder

All Implemented Interfaces:

DataBlockEncoder

Direct Known Subclasses:

BufferedDataBlockEncoder, RowIndexCodecV1

@InterfaceAudience.Private
public abstract class AbstractDataBlockEncoder
extends Object
implements DataBlockEncoder

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	AbstractDataBlockEncoder.AbstractEncodedSeeker Decorates EncodedSeeker with a HFileBlockDecodingContext

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.io.encoding.DataBlockEncoder

DataBlockEncoder.EncodedSeeker

Constructor Summary

Constructors

Constructor and Description
AbstractDataBlockEncoder()

Method Summary

Modifier and Type	Method and Description
protected Cell	createFirstKeyCell(ByteBuffer key, int keyLength)
HFileBlockDecodingContext	newDataBlockDecodingContext(HFileContext meta) Creates an encoder specific decoding context, which will prepare the data before actual decoding
HFileBlockEncodingContext	newDataBlockEncodingContext(DataBlockEncoding encoding, byte[] header, HFileContext meta) Creates a encoder specific encoding context
protected void	postEncoding(HFileBlockEncodingContext encodingCtx)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.io.encoding.DataBlockEncoder

createSeeker, decodeKeyValues, encode, endBlockEncoding, getFirstKeyCellInBlock, startBlockEncoding

Constructor Detail

AbstractDataBlockEncoder

public AbstractDataBlockEncoder()

Method Detail

newDataBlockEncodingContext

public HFileBlockEncodingContext newDataBlockEncodingContext(DataBlockEncoding encoding,
                                                             byte[] header,
                                                             HFileContext meta)

Description copied from interface: DataBlockEncoder

Creates a encoder specific encoding context

Specified by:

newDataBlockEncodingContext in interface DataBlockEncoder

Parameters:

encoding - encoding strategy used

header - header bytes to be written, put a dummy header here if the header is unknown

meta - HFile meta data

Returns:

a newly created encoding context

newDataBlockDecodingContext

public HFileBlockDecodingContext newDataBlockDecodingContext(HFileContext meta)

Description copied from interface: DataBlockEncoder

Creates an encoder specific decoding context, which will prepare the data before actual decoding

Specified by:

newDataBlockDecodingContext in interface DataBlockEncoder

Parameters:

meta - HFile meta data

Returns:

a newly created decoding context

postEncoding

protected void postEncoding(HFileBlockEncodingContext encodingCtx)
                     throws IOException

Throws:

IOException

createFirstKeyCell

protected Cell createFirstKeyCell(ByteBuffer key,
                                  int keyLength)