water.fvec

Class SubsetVec

java.lang.Object

water.Iced<T>

water.Keyed<Vec>

water.fvec.Vec

water.fvec.SubsetVec

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable<Vec>

public class SubsetVec
extends Vec

A simple wrapper for looking at only a subset of rows

See Also:

Serialized Form

Nested Class Summary

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

Vec.ESPC, Vec.Holder, Vec.Reader, Vec.VectorGroup, Vec.Writer

Field Summary

Fields inherited from class water.fvec.Vec

_cids, _rowLayout, DO_HISTOGRAMS, KEY_PREFIX_LEN, PERCENTILES, T_BAD, T_CAT, T_NUM, T_STR, T_TIME, T_UUID, TYPE_STR

Fields inherited from class water.Keyed

_key

Constructor Summary

Constructors

Constructor and Description
SubsetVec(Key key, int rowLayout, Key masterVecKey, Key subsetRowsKey)

Method Summary

Modifier and Type	Method and Description
Chunk	chunkForChunkIdx(int cidx) Map from chunk-index to Chunk.
Vec	masterVec()
protected Keyed	readAll_impl(AutoBuffer ab, Futures fs)
Futures	remove_impl(Futures fs, boolean cascade) Remove associated Keys when this guy removes.
Vec	rows()
protected AutoBuffer	writeAll_impl(AutoBuffer ab) Write out K/V pairs

Methods inherited from class water.fvec.Vec

adaptTo, align, at, at16h, at16l, at8, atStr, base, bins, byteSize, cardinality, checksum_impl, chunkForRow, chunkKey, chunkKey, chunkLen, doCopy, domain, elem2ChunkIdx, equals, espc, factor, get_type_str, get_type, getVecKey, group, hashCode, isBad, isBinary, isBinary, isBinaryOnes, isCategorical, isCompatibleWith, isConst, isConst, isDomainTruncated, isHomedLocally, isInt, isNA, isNumeric, isString, isTime, isUUID, isVolatile, lazy_bins, length, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeCon, makeConN, makeCons, makeCons, makeCopy, makeCopy, makeCopy, makeDoubles, makeOne, makeOne, makeOnes, makeOnes, makeRand, makeRepSeq, makeSeq, makeSeq, makeSeq, makeTimeVec, makeVec, makeVec, makeVec, makeVec, makeVec, makeVec, makeVolatileDoubles, makeVolatileInts, makeZero, makeZero, makeZero, makeZero, makeZero, makeZeros, makeZeros, max, maxs, mean, min, mins, mode, naCnt, nChunks, nChunksFor, newKey, ninfs, nonEmptyChunks, nzCnt, open, pctiles, pinfs, postWrite, preWriting, remove_self_key_impl, rollupStatsKey, set, set, set, set, set, setBad, setChunkIdx, setDomain, setNA, sigma, sparseRatio, startRollupStats, startRollupStats, stride, stringAt, toCategoricalVec, toNumericVec, toString, toStringVec, toTwoDimTable, toTwoDimTable

Methods inherited from class water.Keyed

checksum_impl, checksum, checksum, getKey, makeSchema, readAll, remove_impl, remove, remove, remove, remove, remove, remove, removeQuietly, writeAll

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

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

Constructor Detail

SubsetVec

public SubsetVec(Key key,
                 int rowLayout,
                 Key masterVecKey,
                 Key subsetRowsKey)

Method Detail

rows

public Vec rows()

chunkForChunkIdx

public Chunk chunkForChunkIdx(int cidx)

Map from chunk-index to Chunk. These wrappers are making custom Chunks

Returns:

Chunk for a chunk#

remove_impl

public Futures remove_impl(Futures fs,
                           boolean cascade)

Description copied from class: Vec

Remove associated Keys when this guy removes. For Vecs, remove all associated Chunks.

Overrides:

remove_impl in class Vec

Returns:

Passed in Futures for flow-coding

writeAll_impl

protected AutoBuffer writeAll_impl(AutoBuffer ab)

Write out K/V pairs

Overrides:

writeAll_impl in class Vec

readAll_impl

protected Keyed readAll_impl(AutoBuffer ab,
                             Futures fs)

Overrides:

readAll_impl in class Vec

masterVec

public Vec masterVec()