org.apache.sysds.hops.codegen.template

Class TemplateBase

java.lang.Object

org.apache.sysds.hops.codegen.template.TemplateBase

Direct Known Subclasses:

TemplateCell, TemplateOuterProduct, TemplateRow

public abstract class TemplateBase
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TemplateBase.CloseType
static class	TemplateBase.TemplateType

Method Summary

Modifier and Type	Method and Description
abstract TemplateBase.CloseType	close(Hop hop) Indicates if the template must be closed at the current hop; either due to final operations (e.g., aggregate) or unsupported operations.
abstract Pair<Hop[],CNodeTpl>	constructCplan(Hop hop, CPlanMemoTable memo, boolean compileLiterals) Constructs a single cplan rooted at the given hop, according to the plan given in the memo structure for this particular hop and its recursive inputs.
boolean	equals(Object obj)
abstract boolean	fuse(Hop hop, Hop input) Indicates if the template can be expanded to the given hop starting from an open template at the input.
TemplateBase.CloseType	getCType()
TemplateBase.TemplateType	getType()
int	hashCode()
boolean	isClosed()
abstract boolean	merge(Hop hop, Hop input) Indicates if the template at the current hop can be expanded by merging another template available for one of its other inputs which is not yet covered by the template of the current hop.
abstract boolean	open(Hop hop) Indicates if this template can be opened at the given hop, where hop represents bottom (first operation on the inputs) of the fused operator.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

getType

public TemplateBase.TemplateType getType()

getCType

public TemplateBase.CloseType getCType()

isClosed

public boolean isClosed()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

open

public abstract boolean open(Hop hop)

Indicates if this template can be opened at the given hop, where hop represents bottom (first operation on the inputs) of the fused operator.

Parameters:

hop - current hop

Returns:

true if template can be opened

fuse

public abstract boolean fuse(Hop hop,
                             Hop input)

Indicates if the template can be expanded to the given hop starting from an open template at the input.

Parameters:

hop - current hop

input - hop with open template of same type

Returns:

true if the current hop can be fused into the operator.

merge

public abstract boolean merge(Hop hop,
                              Hop input)

Indicates if the template at the current hop can be expanded by merging another template available for one of its other inputs which is not yet covered by the template of the current hop.

Parameters:

hop - current hop

input - direct input of current hop with available template

Returns:

true if the the input hop can be fused into the current hop

close

public abstract TemplateBase.CloseType close(Hop hop)

Indicates if the template must be closed at the current hop; either due to final operations (e.g., aggregate) or unsupported operations.

Parameters:

hop - current hop

Returns:

close type (closed invalid, closed valid, open)

constructCplan

public abstract Pair<Hop[],CNodeTpl> constructCplan(Hop hop,
                                                    CPlanMemoTable memo,
                                                    boolean compileLiterals)

Constructs a single cplan rooted at the given hop, according to the plan given in the memo structure for this particular hop and its recursive inputs.

Parameters:

hop - root of cplan

memo - memoization table for partial subplans

compileLiterals - if true compile non-integer literals as constants, otherwise variables. note: integer literals are always compiled as constants.

Returns:

pair containing hops and code template