water
Class ValueArray

java.lang.Object
  water.Iced
      water.ValueArray

All Implemented Interfaces:

java.lang.Cloneable, Freezable

public class ValueArray
extends Iced
implements java.lang.Cloneable

Large Arrays & Arraylets Large arrays are broken into 4Meg chunks (except the last chunk which may be from 4 to 8Megs). Large arrays have a metadata section in this ValueArray.

Nested Class Summary

static class	ValueArray.Column
static class	ValueArray.CsvVAStream
static class	ValueArray.VAStream

Field Summary

ValueArray.Column[]	_cols
Key	_key
long	_numrows
int	_rowsize
long[]	_rpc
static long	CHUNK_SZ
static int	LOG_CHK

Constructor Summary

ValueArray(Key key, int[] rows, int rowsize, ValueArray.Column[] cols)

ValueArray(Key key, long len)

ValueArray(Key key, long numrows, int rowsize, ValueArray.Column[] cols)

Method Summary

Frame	asFrame()
Frame	asFrame(java.lang.String input)
static Frame	asFrame(Value value)
long	chknum(long rownum) Chunk number containing a row
static long	chknum(long rownum, long numrows, int rowsize)
long	chunks() Number of chunks
ValueArray	clone()
java.lang.String[]	colNames() An array of column names
long	data(AutoBuffer ab, int row_in_chunk, int colnum)
long	data(AutoBuffer ab, int row_in_chunk, ValueArray.Column col)
long	data(long rownum, int colnum)
double	datad(AutoBuffer ab, int row_in_chunk, int colnum)
double	datad(AutoBuffer ab, int row_in_chunk, ValueArray.Column col)
double	datad(long rownum, int colnum)
static Key	getArrayKey(Key k) Get the root array Key from a random arraylet sub-key
static byte[]	getArrayKeyBytes(Key k)
AutoBuffer	getChunk(Key key)
AutoBuffer	getChunk(long chknum)
static long	getChunkIndex(Key k) Get the chunk-index from a random arraylet sub-key
Key	getChunkKey(long chknum)
static Key	getChunkKey(long chknum, Key arrayKey)
static long	getChunkOffset(Key k)
int[]	getColumnIds(java.lang.String[] colNames)
Key	getKey() Return the key that denotes this entire ValueArray in the K/V store.
boolean	hasInvalidRows(int colnum)
ValueArray	init(Key key)
boolean	isNA(AutoBuffer ab, int row_in_chunk, int colnum)
boolean	isNA(AutoBuffer ab, int row_in_chunk, ValueArray.Column col)
boolean	isNA(long rownum, int colnum)
long	length()
int	numCols()
long	numRows()
java.io.InputStream	openStream()
java.io.InputStream	openStream(Job.ProgressMonitor p)
static Key	readPut(Key k, java.io.InputStream is)
static Key	readPut(Key k, java.io.InputStream is, Job job)
static Key	readPut(java.lang.String keyname, java.io.InputStream is)
int	rowInChunk(long chknum, long rownum)
int	rowSize() Returns the width of a row.
int	rpc(long chunknum) Rows in this chunk
static int	rpc(long chunknum, int rpc, long numrows)
void	setColumnNames(java.lang.String[] names) An array of column names
long	startRow(long chunknum) Row number at the start of this chunk
java.lang.String	toString() Pretty print!
java.lang.String	toString(long idx)

Methods inherited from class water.Iced

frozenType, newInstance, read, toDocField, write, writeJSON, writeJSONFields

Methods inherited from class java.lang.Object

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

Field Detail

LOG_CHK

public static final int LOG_CHK

See Also:

Constant Field Values

CHUNK_SZ

public static final long CHUNK_SZ

See Also:

Constant Field Values

_key

public transient Key _key

_cols

public final ValueArray.Column[] _cols

_rpc

public long[] _rpc

_numrows

public long _numrows

_rowsize

public final int _rowsize

Constructor Detail

ValueArray

public ValueArray(Key key,
                  long numrows,
                  int rowsize,
                  ValueArray.Column[] cols)

ValueArray

public ValueArray(Key key,
                  long len)

ValueArray

public ValueArray(Key key,
                  int[] rows,
                  int rowsize,
                  ValueArray.Column[] cols)

Method Detail

getColumnIds

public int[] getColumnIds(java.lang.String[] colNames)

getKey

public final Key getKey()

Return the key that denotes this entire ValueArray in the K/V store.

clone

public ValueArray clone()

Overrides:

clone in class Iced

init

public final ValueArray init(Key key)

Overrides:

init in class Iced

toString

public java.lang.String toString()

Pretty print!

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(long idx)

colNames

public final java.lang.String[] colNames()

An array of column names

setColumnNames

public final void setColumnNames(java.lang.String[] names)

An array of column names

rowSize

public int rowSize()

Returns the width of a row.

numRows

public long numRows()

numCols

public int numCols()

length

public long length()

hasInvalidRows

public boolean hasInvalidRows(int colnum)

rpc

public int rpc(long chunknum)

Rows in this chunk

rpc

public static int rpc(long chunknum,
                      int rpc,
                      long numrows)

startRow

public long startRow(long chunknum)

Row number at the start of this chunk

rowInChunk

public int rowInChunk(long chknum,
                      long rownum)

chunks

public long chunks()

Number of chunks

chknum

public long chknum(long rownum)

Chunk number containing a row

chknum

public static long chknum(long rownum,
                          long numrows,
                          int rowsize)

getChunk

public AutoBuffer getChunk(long chknum)

getChunk

public AutoBuffer getChunk(Key key)

datad

public double datad(long rownum,
                    int colnum)

datad

public double datad(AutoBuffer ab,
                    int row_in_chunk,
                    int colnum)

datad

public double datad(AutoBuffer ab,
                    int row_in_chunk,
                    ValueArray.Column col)

data

public long data(long rownum,
                 int colnum)

data

public long data(AutoBuffer ab,
                 int row_in_chunk,
                 int colnum)

data

public long data(AutoBuffer ab,
                 int row_in_chunk,
                 ValueArray.Column col)

isNA

public boolean isNA(long rownum,
                    int colnum)

isNA

public boolean isNA(AutoBuffer ab,
                    int row_in_chunk,
                    int colnum)

isNA

public boolean isNA(AutoBuffer ab,
                    int row_in_chunk,
                    ValueArray.Column col)

getChunkKey

public Key getChunkKey(long chknum)

getChunkKey

public static Key getChunkKey(long chknum,
                              Key arrayKey)

getArrayKey

public static Key getArrayKey(Key k)

Get the root array Key from a random arraylet sub-key

getArrayKeyBytes

public static byte[] getArrayKeyBytes(Key k)

getChunkIndex

public static long getChunkIndex(Key k)

Get the chunk-index from a random arraylet sub-key

getChunkOffset

public static long getChunkOffset(Key k)

readPut

public static Key readPut(java.lang.String keyname,
                          java.io.InputStream is)
                   throws java.io.IOException

Throws:

java.io.IOException

readPut

public static Key readPut(Key k,
                          java.io.InputStream is)
                   throws java.io.IOException

Throws:

java.io.IOException

readPut

public static Key readPut(Key k,
                          java.io.InputStream is,
                          Job job)
                   throws java.io.IOException

Throws:

java.io.IOException

openStream

public java.io.InputStream openStream()

openStream

public java.io.InputStream openStream(Job.ProgressMonitor p)

asFrame

public static Frame asFrame(Value value)

asFrame

public Frame asFrame()

asFrame

public Frame asFrame(java.lang.String input)