com.xxdb.compression

Class DeltaOfDeltaDecoder

java.lang.Object

com.xxdb.compression.AbstractDecoder

com.xxdb.compression.DeltaOfDeltaDecoder

All Implemented Interfaces:

Decoder

public class DeltaOfDeltaDecoder
extends AbstractDecoder

Constructor Summary

Constructors

Constructor and Description
DeltaOfDeltaDecoder()

Method Summary

Modifier and Type	Method and Description
ExtendedDataInput	decompress(DataInput in, int length, int unitLength, int elementCount, boolean isLittleEndian, int extra, int type, short scale) This method takes in an input stream with many blocks and decompresses them all into a byte array

Methods inherited from class com.xxdb.compression.AbstractDecoder

createColumnVector, createLZ4ColumnVector

Methods inherited from class java.lang.Object

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

Constructor Detail

DeltaOfDeltaDecoder

public DeltaOfDeltaDecoder()

Method Detail

decompress

public ExtendedDataInput decompress(DataInput in,
                                    int length,
                                    int unitLength,
                                    int elementCount,
                                    boolean isLittleEndian,
                                    int extra,
                                    int type,
                                    short scale)
                             throws IOException

Description copied from interface: Decoder

This method takes in an input stream with many blocks and decompresses them all into a byte array

Form of input: 1. 4 bytes - block size 2. contents 3. 4 bytes - block size 4. contents ...

Parameters:

in - input stream

length - input length, continue from current position of input stream

unitLength - The length of an element in bytes. It is zero if the element is a string object.

Returns:

Throws:

IOException