water.rapids.ast.params

Class AstNumList

java.lang.Object

water.Iced<AstRoot>

water.rapids.ast.AstRoot

water.rapids.ast.AstParameter

water.rapids.ast.params.AstNumList

All Implemented Interfaces:

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

public class AstNumList
extends AstParameter

A collection of base/stride/cnts. Syntax: { {num | num:cnt | num:cnt:stride},* }

The bases can be unordered with dups (often used for column selection where repeated columns are allowed, and order matters). The _isList flag tracks that all cnts are 1 (and hence all strides are ignored and 1); these lists may or may not be sorted. Note that some column selection is dense (typical all-columns is: {0:MAX_INT}), and this has cnt>1.

When cnts are > 1, bases must be sorted, with base+stride*cnt always less than the next base. Typical use-case might be a list of probabilities for computing quantiles, or grid-search parameters.

Asking for a sorted integer expansion will sort the bases internally, and also demand no overlap between bases. The has(), min() and max() calls require a sorted list.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double[]	_bases
boolean	_isList
boolean	_isSort

Fields inherited from class water.rapids.ast.AstParameter

_v

Fields inherited from class water.rapids.ast.AstRoot

CONSTS, PRIMS

Constructor Summary

Constructors

Constructor and Description
AstNumList()
AstNumList(double d)
AstNumList(double[] list)
AstNumList(int[] list)
AstNumList(long lo, long hi_exclusive)
AstNumList(Rapids e)

Method Summary

Methods

Modifier and Type	Method and Description
long	cnt()
int[]	columns(java.lang.String[] names)
Val	exec(Env env)
double[]	expand()
int[]	expand4()
long[]	expand8()
long[]	expand8Sort()
boolean	has(long v)
boolean	isDense()
boolean	isEmpty()
double	max()
double	min()
int	nargs()
AstNumList	sort()
java.lang.String	str()
java.lang.String	toJavaString()

Methods inherited from class water.rapids.ast.AstParameter

description, example, makeNum, setNum

Methods inherited from class water.rapids.ast.AstRoot

apply, newAstFrame, newAstStr, toString

Methods inherited from class water.Iced

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

Methods inherited from class java.lang.Object

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

Field Detail

_bases

public final double[] _bases

_isList

public final boolean _isList

_isSort

public boolean _isSort

Constructor Detail

AstNumList

public AstNumList(Rapids e)

AstNumList

public AstNumList(double d)

AstNumList

public AstNumList(long lo,
          long hi_exclusive)

AstNumList

public AstNumList()

AstNumList

public AstNumList(double[] list)

AstNumList

public AstNumList(int[] list)

Method Detail

exec

public Val exec(Env env)

Overrides:

exec in class AstParameter

str

public java.lang.String str()

Overrides:

str in class AstParameter

nargs

public int nargs()

Overrides:

nargs in class AstParameter

toJavaString

public java.lang.String toJavaString()

Overrides:

toJavaString in class AstParameter

expand

public double[] expand()

sort

public AstNumList sort()

expand4

public int[] expand4()

expand8

public long[] expand8()

expand8Sort

public long[] expand8Sort()

max

public double max()

min

public double min()

cnt

public long cnt()

isDense

public boolean isDense()

isEmpty

public boolean isEmpty()

has

public boolean has(long v)

columns

public int[] columns(java.lang.String[] names)

Overrides:

columns in class AstRoot