water.fvec

Class CBSChunk

java.lang.Object

water.Iced

water.fvec.Chunk

water.fvec.CBSChunk

All Implemented Interfaces:

java.lang.Cloneable, Freezable

public class CBSChunk
extends Chunk

A simple chunk for boolean values. In fact simple bit vector. Each boolean is represented by 2bits since we need to represent NA.

Field Summary

Fields

Modifier and Type	Field and Description
protected byte	_bpv
protected byte	_gap
protected static byte	_NA

Fields inherited from class water.fvec.Chunk

_chk2, _len, _start, _vec

Constructor Summary

Constructors

Constructor and Description
CBSChunk(byte[] bs, byte gap, byte bpv)

Method Summary

Methods

Modifier and Type	Method and Description
protected long	at8_impl(int idx)
protected byte	atb(int idx)
protected double	atd_impl(int idx) Chunk-specific readers.
static int	clen(int values, int bpv) Returns compressed len of the given array length if the value if represented by bpv-bits.
protected boolean	isNA_impl(int i)
Chunk	read(AutoBuffer bb) Deserialize from the AutoBuffer into a pre-existing 'this' object.
static byte	read1b(byte b, int off) Reads 1bit from given b in given offset.
static byte	read2b(byte b, int off) Reads 1bit from given b in given offset.
AutoBuffer	write(AutoBuffer bb) Chunk-specific implementations of read and write
static byte	write1b(byte b, byte val, int off) Writes 1bit from value into b at given offset and return b
static byte	write2b(byte b, byte val, int off) Writes 2bits from value into b at given offset and return b

Methods inherited from class water.fvec.Chunk

at_slow, at, at0, at8_slow, at8, at80, byteSize, cidx, clone, close, getBytes, isNA_slow, isNA, isNA0, isSparse, nextNZ, nonzeros, nonzeros, pformat_len, pformat_len0, pformat_len0, pformat, pformat0, readable, set, set, set, set0, set0, set0, setNA, setNA0, sparseLen, toString, writable

Methods inherited from class water.Iced

frozenType, init, newInstance, toDocField, writeJSON, writeJSONFields

Methods inherited from class java.lang.Object

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

Field Detail

_NA

protected static final byte _NA

See Also:

Constant Field Values

_bpv

protected byte _bpv

_gap

protected byte _gap

Constructor Detail

CBSChunk

public CBSChunk(byte[] bs,
        byte gap,
        byte bpv)

Method Detail

at8_impl

protected long at8_impl(int idx)

Specified by:

at8_impl in class Chunk

atd_impl

protected double atd_impl(int idx)

Description copied from class: Chunk

Chunk-specific readers.

Specified by:

atd_impl in class Chunk

isNA_impl

protected final boolean isNA_impl(int i)

Specified by:

isNA_impl in class Chunk

atb

protected byte atb(int idx)

write

public AutoBuffer write(AutoBuffer bb)

Description copied from class: Chunk

Chunk-specific implementations of read and write

Specified by:

write in interface Freezable

Specified by:

write in class Chunk

read

public Chunk read(AutoBuffer bb)

Description copied from interface: Freezable

Deserialize from the AutoBuffer into a pre-existing 'this' object.

Specified by:

read in interface Freezable

Specified by:

read in class Chunk

write1b

public static byte write1b(byte b,
           byte val,
           int off)

Writes 1bit from value into b at given offset and return b

write2b

public static byte write2b(byte b,
           byte val,
           int off)

Writes 2bits from value into b at given offset and return b

read1b

public static byte read1b(byte b,
          int off)

Reads 1bit from given b in given offset.

read2b

public static byte read2b(byte b,
          int off)

Reads 1bit from given b in given offset.

clen

public static int clen(int values,
       int bpv)

Returns compressed len of the given array length if the value if represented by bpv-bits.