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

protected byte	_bpv
protected byte	_gap
protected static byte	_NA

Fields inherited from class water.fvec.Chunk

_chk, _len, _start, _vec

Constructor Summary

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

Method Summary

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 & 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, pformat_len, pformat_len0, pformat_len0, pformat, pformat0, readable, set, set, set, set0, set0, set0, setNA, setNA0, 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 & 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.