Class: MapToItem

Defined in: packages/core/src/plan/operators/conversion.ts:12

Converts a named-attribute tuple stream to an item stream by extracting a single column.

Implements

• PlanOperator

Constructors

Constructor

new MapToItem(lang, key, source): MapToItem

Defined in: packages/core/src/plan/operators/conversion.ts:16

Parameters

Parameter	Type	Description
lang	Lowercase<string>	PlanOperator.lang
key	ASTIdentifier	Column to extract as the item value; defaults to the sole column in source.schema, or allAttrs when the schema has more than one column.
source	PlanTupleOperator	Tuple operator providing the input rows.

Returns

MapToItem

Properties

key

key: ASTIdentifier

Defined in: packages/core/src/plan/operators/conversion.ts:23

Column to extract as the item value; defaults to the sole column in source.schema, or allAttrs when the schema has more than one column.

---

lang

lang: Lowercase<string>

Defined in: packages/core/src/plan/operators/conversion.ts:18

PlanOperator.lang

Implementation of

PlanOperator.lang

---

parent

parent: PlanOperator

Defined in: packages/core/src/plan/operators/conversion.ts:14

PlanOperator.parent

Implementation of

PlanOperator.parent

---

source

source: PlanTupleOperator

Defined in: packages/core/src/plan/operators/conversion.ts:25

Tuple operator providing the input rows.

Methods

accept()

accept<Ret, Arg>(visitors, arg?): Ret

Defined in: packages/core/src/plan/operators/conversion.ts:37

PlanOperator.accept

Type Parameters

Type Parameter
Ret
Arg

Parameters

Parameter	Type
visitors	Record<string, PlanVisitor<Ret, Arg>>
arg?	Arg

Returns

Ret

Implementation of

PlanOperator.accept

---

clone()

clone(): MapToItem

Defined in: packages/core/src/plan/operators/conversion.ts:56

PlanOperator.clone

Returns

MapToItem

Implementation of

PlanOperator.clone

---

getChildren()

getChildren(): PlanOperator[]

Defined in: packages/core/src/plan/operators/conversion.ts:52

PlanOperator.getChildren

Returns

PlanOperator[]

Implementation of

PlanOperator.getChildren

---

getDependencies()

getDependencies(): IdSet

Defined in: packages/core/src/plan/operators/conversion.ts:62

PlanOperator.getDependencies

Returns

IdSet

Implementation of

PlanOperator.getDependencies

---

replaceChild()

replaceChild(current, replacement): void

Defined in: packages/core/src/plan/operators/conversion.ts:44

PlanOperator.replaceChild

Parameters

Parameter	Type
current	PlanTupleOperator
replacement	PlanTupleOperator

Returns

void

Implementation of

PlanOperator.replaceChild