water.fvec

Class TransfVec

java.lang.Object

water.Iced

water.Keyed

water.fvec.Vec

water.fvec.TransfVec

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

public class TransfVec
extends Vec

Dummy vector transforming values of given vector according to given domain mapping.

The mapping is defined by a simple hash map composed of two arrays. The first array contains values. Index of values is index into the second array _indexes which contains final value (i.e., index to domain array).

If _indexes array is null, then index of found value is used directly.

To avoid virtual calls or additional null check for _indexes the vector returns two different implementations of the underlying chunk depending if _indexes is null or not.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class water.fvec.Vec

Vec.CollectDomain, Vec.VectorGroup

Field Summary

Fields inherited from class water.fvec.Vec

CHUNK_SZ, KEY_PREFIX_LEN, PERCENTILES, T_BAD, T_ENUM, T_NUM, T_STR, T_TIME, T_TIMELAST, T_UUID

Fields inherited from class water.Keyed

_key

Constructor Summary

Constructors

Constructor and Description
TransfVec(int[][] mapping, Key masterVecKey, Key key, long[] espc)
TransfVec(int[][] mapping, java.lang.String[] domain, Key masterVecKey, Key key, long[] espc)
TransfVec(int[] values, int[] indexes, java.lang.String[] domain, Key masterVecKey, Key key, long[] espc)

Method Summary

Methods

Modifier and Type	Method and Description
Chunk	chunkForChunkIdx(int cidx) The Chunk for a chunk#.
Vec	compose(int[][] transfMap, java.lang.String[] domain) Compose this vector with given transformation.
static Vec	compose(TransfVec origVec, int[][] transfMap, java.lang.String[] domain, boolean keepOrig) Compose given origVector with given transformation.
protected Vec	masterVec() This Vec does not have dependent hidden Vec it uses.
static int[][]	pack(int[] values, boolean[] usemap)
static void	sortAccording2(int[] ary, java.lang.Integer[] sortOrder) Sort given array according given sort order.
static void	sortWith(int[] ary, int[] ary2) Sort two arrays - the second one is sorted according the first one.

Methods inherited from class water.fvec.Vec

align, at, at16h, at16l, at8, atStr, base, bins, cardinality, checksum, chunkForRow, chunkKey, chunkKey, domain, equals, factor, getVecKey, group, hashCode, isBad, isConst, isEnum, isInt, isNA, isNumeric, isString, isTime, isUUID, lazy_bins, length, makeCon, makeCon, makeCopy, makeRepSeq, makeSeq, makeSimpleTransf, makeTransf, makeTransf, makeVec, makeVec, makeVec, makeZero, makeZero, makeZero, makeZeros, max, maxs, mean, min, mins, naCnt, nChunks, newKey, ninfs, nzCnt, open, pctiles, pinfs, postWrite, preWriting, remove_impl, set, set, set, set, setDomain, sigma, startRollupStats, startRollupStats, stride, timeParse, toEnum, toString

Methods inherited from class water.Keyed

remove, remove, remove, remove

Methods inherited from class water.Iced

clone, frozenType, read_impl, read, readExternal, readJSON_impl, readJSON, write_impl, write, writeExternal, writeHTML_impl, writeHTML, writeJSON_impl, writeJSON

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TransfVec

public TransfVec(int[][] mapping,
         Key masterVecKey,
         Key key,
         long[] espc)

TransfVec

public TransfVec(int[][] mapping,
         java.lang.String[] domain,
         Key masterVecKey,
         Key key,
         long[] espc)

TransfVec

public TransfVec(int[] values,
         int[] indexes,
         java.lang.String[] domain,
         Key masterVecKey,
         Key key,
         long[] espc)

Method Detail

chunkForChunkIdx

public Chunk chunkForChunkIdx(int cidx)

Description copied from class: Vec

The Chunk for a chunk#. Warning: this pulls the data locally; using this call on every Chunk index on the same node will probably trigger an OOM!

Returns:

Chunk for a chunk#

compose

public Vec compose(int[][] transfMap,
          java.lang.String[] domain)

Compose this vector with given transformation. Always return a new vector

compose

public static Vec compose(TransfVec origVec,
          int[][] transfMap,
          java.lang.String[] domain,
          boolean keepOrig)

Compose given origVector with given transformation. Always returns a new vector. Original vector is kept if keepOrig is true.

Parameters:

origVec -

transfMap -

keepOrig -

Returns:

a new instance of TransfVec composing transformation of origVector and tranfsMap

pack

public static int[][] pack(int[] values,
           boolean[] usemap)

sortWith

public static void sortWith(int[] ary,
            int[] ary2)

Sort two arrays - the second one is sorted according the first one.

sortAccording2

public static void sortAccording2(int[] ary,
                  java.lang.Integer[] sortOrder)

Sort given array according given sort order. Sort is implemented in-place.

masterVec

protected Vec masterVec()

Description copied from class: Vec

This Vec does not have dependent hidden Vec it uses.

Returns:

dependent hidden vector or null

See Also:

TransfVec