Package org.apache.sysds.hops.codegen.template

Class TemplateCell

java.lang.Object

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

org.apache.sysds.hops.codegen.template.TemplateCell

Direct Known Subclasses:

TemplateMultiAgg

public class TemplateCell
extends TemplateBase

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TemplateCell.HopInputComparator	Comparator to order input hops of the cell template.

Nested classes/interfaces inherited from class org.apache.sysds.hops.codegen.template.TemplateBase

TemplateBase.CloseType, TemplateBase.TemplateType

Constructor Summary

Constructors

Constructor	Description
TemplateCell()
TemplateCell(TemplateBase.CloseType ctype)
TemplateCell(TemplateBase.TemplateType type, TemplateBase.CloseType ctype)

Method Summary

Modifier and Type	Method	Description
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.
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	fuse(Hop hop, Hop input)	Indicates if the template can be expanded to the given hop starting from an open template at the input.
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.
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 org.apache.sysds.hops.codegen.template.TemplateBase

equals, getCType, getType, hashCode, isClosed

Methods inherited from class java.lang.Object

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

Constructor Detail

TemplateCell

public TemplateCell()

TemplateCell

public TemplateCell(TemplateBase.CloseType ctype)

TemplateCell

public TemplateCell(TemplateBase.TemplateType type,
                    TemplateBase.CloseType ctype)

Method Detail

open

public boolean open(Hop hop)

Description copied from class: TemplateBase

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

Specified by:

open in class TemplateBase

Parameters:

hop - current hop

Returns:

true if template can be opened

fuse

public boolean fuse(Hop hop,
                    Hop input)

Description copied from class: TemplateBase

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

Specified by:

fuse in class TemplateBase

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 boolean merge(Hop hop,
                     Hop input)

Description copied from class: TemplateBase

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.

Specified by:

merge in class TemplateBase

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 TemplateBase.CloseType close(Hop hop)

Description copied from class: TemplateBase

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

Specified by:

close in class TemplateBase

Parameters:

hop - current hop

Returns:

close type (closed invalid, closed valid, open)

constructCplan

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

Description copied from class: TemplateBase

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.

Specified by:

constructCplan in class TemplateBase

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