Class: Difference

Defined in: packages/core/src/plan/operators/tuple/set.ts:84

Emits rows from left that do not appear in right.

Extends

• SetOperator

Constructors

Constructor

new Difference(lang, left, right): Difference

Defined in: packages/core/src/plan/operators/tuple/set.ts:11

Parameters

Parameter	Type	Description
lang	Lowercase<string>	-
left	PlanOperator	Left input stream.
right	PlanOperator	Right input stream.

Returns

Difference

Inherited from

SetOperator.constructor

Properties

lang

lang: Lowercase<string>

Defined in: packages/core/src/plan/visitor.ts:42

PlanOperator.lang

Inherited from

SetOperator.lang

---

left

left: PlanOperator

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

Left input stream.

Inherited from

SetOperator.left

---

parent?

optional parent?: PlanOperator

Defined in: packages/core/src/plan/visitor.ts:44

PlanOperator.parent

Inherited from

SetOperator.parent

---

right

right: PlanOperator

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

Right input stream.

Inherited from

SetOperator.right

---

schema

schema: ASTIdentifier[]

Defined in: packages/core/src/plan/visitor.ts:38

Ordered list of attribute identifiers produced by this operator.

Inherited from

SetOperator.schema

---

schemaSet

schemaSet: IdSet

Defined in: packages/core/src/plan/visitor.ts:40

Trie-backed set of the same paths as schema; used for O(k) membership tests.

Inherited from

SetOperator.schemaSet

Methods

accept()

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

Defined in: packages/core/src/plan/operators/tuple/set.ts:86

PlanOperator.accept

Type Parameters

Type Parameter
Ret
Arg

Parameters

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

Returns

Ret

Overrides

SetOperator.accept

---

addToSchema()

addToSchema(item): void

Defined in: packages/core/src/plan/visitor.ts:57

will preserve object references

Parameters

Parameter	Type
item	IdSet | ASTIdentifier | ASTIdentifier[]

Returns

void

Inherited from

SetOperator.addToSchema

---

clearSchema()

clearSchema(): void

Defined in: packages/core/src/plan/visitor.ts:102

will preserve object references

Returns

void

Inherited from

SetOperator.clearSchema

---

clone()

clone(): Difference

Defined in: packages/core/src/plan/operators/tuple/set.ts:93

PlanOperator.clone

Returns

Difference

Overrides

SetOperator.clone

---

getChildren()

getChildren(): PlanOperator[]

Defined in: packages/core/src/plan/operators/tuple/set.ts:48

PlanOperator.getChildren

Returns

PlanOperator[]

Inherited from

SetOperator.getChildren

---

getDependencies()

getDependencies(): IdSet

Defined in: packages/core/src/plan/visitor.ts:113

PlanOperator.getDependencies

Returns

IdSet

Inherited from

SetOperator.getDependencies

---

removeFromSchema()

removeFromSchema(item): boolean

Defined in: packages/core/src/plan/visitor.ts:80

will preserve object references

Parameters

Parameter	Type
item	IdSet | ASTIdentifier | ASTIdentifier[]

Returns

boolean

Inherited from

SetOperator.removeFromSchema

---

replaceChild()

replaceChild(current, replacement): void

Defined in: packages/core/src/plan/operators/tuple/set.ts:39

PlanOperator.replaceChild

Parameters

Parameter	Type
current	PlanOperator
replacement	PlanOperator

Returns

void

Inherited from

SetOperator.replaceChild