Package org.apache.hadoop.hbase.io.compress

Class BlockDecompressorHelper

java.lang.Object

org.apache.hadoop.hbase.io.compress.BlockDecompressorHelper

@Private
public class BlockDecompressorHelper
extends Object

Helper to decompress a ByteBuff that was created by a BlockCompressorStream, or is at least in the same format. Parses the binary format and delegates actual decompression work to the provided BlockDecompressorHelper.RawDecompressor. Note that the use of the word "block" here does not refer to an HFile block.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	BlockDecompressorHelper.RawDecompressor

Constructor Summary

Constructors

Constructor	Description
BlockDecompressorHelper()

Method Summary

Modifier and Type	Method	Description
static int	decompress(ByteBuff output, ByteBuff input, int inputSize, BlockDecompressorHelper.RawDecompressor rawDecompressor)
private static int	rawReadInt(ByteBuff input)	Read an integer from the buffer in big-endian byte order.

Methods inherited from class java.lang.Object

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

Constructor Details

BlockDecompressorHelper

public BlockDecompressorHelper()

Method Details

decompress

public static int decompress(ByteBuff output,
 ByteBuff input,
 int inputSize,
 BlockDecompressorHelper.RawDecompressor rawDecompressor)
                      throws IOException

Throws:

IOException

rawReadInt

private static int rawReadInt(ByteBuff input)

Read an integer from the buffer in big-endian byte order. Note that ByteBuffer.getInt() reads in system-dependent endian-ness, so we can't use that.