Class: XQueryExecutor

Defined in: lang-xquery/src/visitors/executor.ts:21

Extends Executor to evaluate XQuery-specific plan operators, implementing the XQuery focus context (item, position, size) for TreeJoin and materializing sequences for ProjectionSize.

Extends

• Executor

Implements

• XQueryPlanVisitor<Iterable<unknown>, ExecutionContext>

Constructors

Constructor

new XQueryExecutor(vmap, db): XQueryExecutor

Defined in: lang-xquery/src/visitors/executor.ts:29

Parameters

Parameter	Type
vmap	Record<string, PlanVisitor<Iterable<unknown>, ExecutionContext>>
db	DortDBAsFriend

Returns

XQueryExecutor

Overrides

Executor.constructor

Properties

adapter

protected adapter: XQueryDataAdapter<any>

Defined in: lang-xquery/src/visitors/executor.ts:26

XQuery data adapter used to materialize and traverse node values during execution.

---

calcBuilders

protected calcBuilders: Record<string, PlanVisitor<CalculationParams, never>>

Defined in: core/dist/visitors/executor.d.ts:58

Per-language CalculationBuilder visitor map.

Inherited from

Executor.calcBuilders

---

db

protected db: DortDBAsFriend

Defined in: core/dist/visitors/executor.d.ts:52

Database instance providing sources, configuration, and the language manager.

Inherited from

Executor.db

---

eqCheckers

protected eqCheckers: Record<string, EqualityChecker>

Defined in: core/dist/visitors/executor.d.ts:60

Per-language EqualityChecker visitor map.

Inherited from

Executor.eqCheckers

---

indexCache

protected indexCache: Map<PlanTupleOperator, [Calculation[], IndexMatchInput[], HashJoinIndexStatic]>

Defined in: core/dist/visitors/executor.d.ts:65

Cache keyed by join operator; stores the chosen index and pre-computed calculation inputs so index selection is not repeated for each execution of the same plan.

Inherited from

Executor.indexCache

---

lang

protected lang: Lowercase<string>

Defined in: core/dist/visitors/executor.d.ts:48

The language identifier this executor handles.

Inherited from

Executor.lang

---

serialize

protected serialize: SerializeFn

Defined in: core/dist/visitors/executor.d.ts:54

Language-specific serialization function, used when converting tuple streams back to items.

Inherited from

Executor.serialize

---

tdeps

protected tdeps: Record<string, TransitiveDependencies>

Defined in: core/dist/visitors/executor.d.ts:56

Per-language TransitiveDependencies visitor map.

Inherited from

Executor.tdeps

---

vmap

protected vmap: Record<string, PlanVisitor<Iterable<unknown>, ExecutionContext>>

Defined in: core/dist/visitors/executor.d.ts:50

Per-language visitor map used for recursive dispatch.

Inherited from

Executor.vmap

Methods

bfsCheck()

protected bfsCheck(queueFwd, queueRev, getNextItemsFwd, getNextItemsRev, ctx, keys, initialKeys, max): Trie<unknown>

Defined in: core/dist/visitors/executor.d.ts:155

Checks if there are any nodes reachable from both frontiers within the remaining path length.

Parameters

Parameter	Type
queueFwd	Queue<LinkedListNode<unknown[]>>
queueRev	Queue<LinkedListNode<unknown[]>>
getNextItemsFwd	(ctx) => Iterable<unknown[]>
getNextItemsRev	(ctx) => Iterable<unknown[]>
ctx	ExecutionContext
keys	number[]
initialKeys	number[]
max	number

Returns

Trie<unknown>

Inherited from

Executor.bfsCheck

---

bfsCheckSide()

protected bfsCheckSide(queue, getNextItems, ctx, keys, initialKeys, max, visitOnly?): Trie<unknown, true>

Defined in: core/dist/visitors/executor.d.ts:151

Performs a pure BFS from the nodes in queue, collecting all reachable join-key values within max hops. When visitOnly is provided, only nodes whose keys appear in that set are explored, acting as a pre-computed reachability filter.

Parameters

Parameter	Type
queue	Queue<LinkedListNode<unknown[]>>
getNextItems	(ctx) => Iterable<unknown[]>
ctx	ExecutionContext
keys	number[]
initialKeys	number[]
max	number
visitOnly?	Trie<unknown>

Returns

Trie<unknown, true>

The set of join-key values visited during this BFS.

Inherited from

Executor.bfsCheckSide

---

distinctCheck()

protected distinctCheck(keys, seen, ctx): boolean

Defined in: core/dist/visitors/executor.d.ts:272

Check if an item loaded in the current context is included in the distinct output for the specified keys. If so, it is added to the seen set.

Parameters

Parameter	Type
keys	(ASTIdentifier | Calculation)[]
seen	Trie<unknown>
ctx	ExecutionContext

Returns

boolean

Inherited from

Executor.distinctCheck

---

distinctStream()

protected distinctStream(stream, keys, seen, ctx): Iterable<unknown[]>

Defined in: core/dist/visitors/executor.d.ts:267

Create a wrapper around a stream of tuples that ensures only distinct combinations of values for the specified keys are produced.

Parameters

Parameter	Type
stream	Iterable<unknown[]>
keys	(ASTIdentifier | Calculation)[]
seen	Trie<unknown>
ctx	ExecutionContext

Returns

Iterable<unknown[]>

Inherited from

Executor.distinctStream

---

execute()

execute(plan, varMapperCtx, boundParams?): object

Defined in: core/dist/visitors/executor.d.ts:84

Executes plan and returns the result iterable together with the populated execution context. If boundParams is provided, each entry is looked up in varMapperCtx and written into the context before evaluation begins.

Parameters

Parameter	Type
plan	PlanOperator
varMapperCtx	VariableMapperCtx
boundParams?	Record<string, unknown>

Returns

ctx

ctx: ExecutionContext

The execution context populated with bound parameters and translation tables.

result

result: Iterable<unknown>

The lazy result iterable produced by evaluating plan.

Throws

When a key in boundParams does not correspond to a known bound parameter.

Inherited from

Executor.execute

---

expandBidiFrontier()

protected expandBidiFrontier(frontier, otherFrontier, visitedItems, pathSize, getNextItems, ctx, min, max, keys, initialKeys, isForward, searchSpace?): Generator<unknown[], void, unknown>

Defined in: core/dist/visitors/executor.d.ts:109

Advances one frontier by one BFS level, yielding joined paths whenever a node is also present in the opposite frontier's visited set.

Parameters

Parameter	Type	Description
frontier	Queue<LinkedListNode<unknown[]>>	The queue to dequeue from this level.
otherFrontier	Trie<unknown, LinkedListNode<unknown[]>[]>	Visited nodes from the opposite direction.
visitedItems	Trie<unknown, LinkedListNode<unknown[]>[]>	Accumulates newly visited nodes from this direction.
pathSize	number	-
getNextItems	(ctx) => Iterable<unknown[]>	-
ctx	ExecutionContext	-
min	number	-
max	number	-
keys	number[]	-
initialKeys	number[]	-
isForward	boolean	true when expanding the forward frontier; affects path-join order.
searchSpace?	Trie<unknown>	When set, only nodes within this set are explored.

Returns

Generator<unknown[], void, unknown>

Inherited from

Executor.expandBidiFrontier

---

findIndexableExpressions()

protected findIndexableExpressions(indexMatchInputs, iterPerRow): readonly [number[], HashJoinIndexStatic][]

Defined in: core/dist/visitors/executor.d.ts:221

From the potentially indexable expressions, find those that can be indexed by an available index. Futhermore, verify that the non-indexable parts of the condition do not depend on the iterPerRow side

Parameters

Parameter	Type
indexMatchInputs	IndexMatchInput & object[]
iterPerRow	PlanTupleOperator

Returns

readonly [number[], HashJoinIndexStatic][]

Inherited from

Executor.findIndexableExpressions

---

generateTuplesFromValues()

protected generateTuplesFromValues(values, operator, ctx): Iterable<unknown[]>

Defined in: core/dist/visitors/executor.d.ts:283

Convert items from a data source into tuples.

Parameters

Parameter	Type
values	Iterable<unknown>
operator	PlanTupleOperator
ctx	ExecutionContext

Returns

Iterable<unknown[]>

Inherited from

Executor.generateTuplesFromValues

---

getBestJoinIndex()

protected getBestJoinIndex(iterOnce, iterPerRow, op, ctx): [Calculation[], IndexMatchInput[], HashJoinIndexStatic]

Defined in: core/dist/visitors/executor.d.ts:228

Returns the best available hash-join index triple for this join, or null when no usable index exists. Results are cached in indexCache per join operator.

Parameters

Parameter	Type
iterOnce	PlanTupleOperator
iterPerRow	PlanTupleOperator
op	Join
ctx	ExecutionContext

Returns

[Calculation[], IndexMatchInput[], HashJoinIndexStatic]

Inherited from

Executor.getBestJoinIndex

---

getBidiGroups()

protected getBidiGroups(operator, ctx, srcRenamer): Queue<LinkedListNode<unknown[]>>[]

Defined in: core/dist/visitors/executor.d.ts:138

The bidirectional recursion target may depend on the source. It is, however, more efficient to process as many target items at once as possible. This method returns groups of source items for which target items can be processed together.

Parameters

Parameter	Type
operator	BidirectionalRecursion
ctx	ExecutionContext
srcRenamer	(row) => unknown[]

Returns

Queue<LinkedListNode<unknown[]>>[]

Inherited from

Executor.getBidiGroups

---

getBidiKeys()

protected getBidiKeys(operator, ctx): object

Defined in: core/dist/visitors/executor.d.ts:119

Extracts the numeric key arrays and renamer functions needed to run the bidirectional BFS for operator, returning them as a plain object.

Parameters

Parameter	Type
operator	BidirectionalRecursion
ctx	ExecutionContext

Returns

fwdRenamer

fwdRenamer: (item) => unknown[]

Renames forward-mapping output into the operator's schema.

Parameters

Parameter	Type
item	unknown[]

Returns

unknown[]

initialKeys

initialKeys: number[]

Indices of variables that exist only in the source / target but not in the mapping.

keys

keys: number[]

Shared path-variable indices (from the mapping schema).

revRenamer

revRenamer: (item) => unknown[]

Renames reverse-mapping output into the operator's schema.

Parameters

Parameter	Type
item	unknown[]

Returns

unknown[]

srcRenamer

srcRenamer: (item) => unknown[]

Renames initial source output into the operator's schema.

Parameters

Parameter	Type
item	unknown[]

Returns

unknown[]

tgtRenamer

tgtRenamer: (item) => unknown[]

Renames target source output into the operator's schema.

Parameters

Parameter	Type
item	unknown[]

Returns

unknown[]

Inherited from

Executor.getBidiKeys

---

getIndexMatchInputs()

protected getIndexMatchInputs(iterOnce, op): IndexMatchInput & object[]

Defined in: core/dist/visitors/executor.d.ts:213

Get all function calls with at least one argument that does not depend on the iterOnce side of the join.

Parameters

Parameter	Type
iterOnce	PlanTupleOperator
op	Join

Returns

Inherited from

Executor.getIndexMatchInputs

---

hashJoinValues()

protected hashJoinValues(iterOnce, iterPerRow, op, ctx, indexInputCalcs, indexMatchInputs, idxCls): [Calculation[], Iterable<[unknown[], unknown[][]], any, any>, Iterable<unknown[], any, any>]

Defined in: core/dist/visitors/executor.d.ts:205

Executes a hash join using idxCls to index the iterPerRow side, then probes it for each row from iterOnce.

Parameters

Parameter	Type
iterOnce	PlanTupleOperator
iterPerRow	PlanTupleOperator
op	Join
ctx	ExecutionContext
indexInputCalcs	Calculation[]
indexMatchInputs	IndexMatchInput[]
idxCls	HashJoinIndexStatic

Returns

[Calculation[], Iterable<[unknown[], unknown[][]], any, any>, Iterable<unknown[], any, any>]

The same three-element tuple as joinValues: remaining conditions, pairs, and all inner items.

Inherited from

Executor.hashJoinValues

---

initBidiFrontiers()

protected initBidiFrontiers(operator, ctx, fwdFrontier, revFrontier, fwdVisited, revVisited, keys, initialKeys, tgtRenamer): Generator<unknown[], void, unknown>

Defined in: core/dist/visitors/executor.d.ts:143

Seeds both BFS frontiers from a group of source items and the corresponding target items, yielding length-1 paths when operator.min <= 1.

Parameters

Parameter	Type
operator	BidirectionalRecursion
ctx	ExecutionContext
fwdFrontier	Queue<LinkedListNode<unknown[]>>
revFrontier	Queue<LinkedListNode<unknown[]>>
fwdVisited	Trie<unknown, LinkedListNode<unknown[]>[]>
revVisited	Trie<unknown, LinkedListNode<unknown[]>[]>
keys	number[]
initialKeys	number[]
tgtRenamer	(row) => unknown[]

Returns

Generator<unknown[], void, unknown>

Inherited from

Executor.initBidiFrontiers

---

joinBidiPaths()

protected joinBidiPaths(fwdPaths, revPaths, ctx, keys, initialKeys): Generator<unknown[], void, unknown>

Defined in: core/dist/visitors/executor.d.ts:114

Yields all result tuples formed by concatenating each forward path with each reverse path that meets at the same join-key values.

Parameters

Parameter	Type
fwdPaths	LinkedListNode<unknown[]>[]
revPaths	LinkedListNode<unknown[]>[]
ctx	ExecutionContext
keys	number[]
initialKeys	number[]

Returns

Generator<unknown[], void, unknown>

Inherited from

Executor.joinBidiPaths

---

joinValues()

protected joinValues(iterOnce, iterPerRow, op, ctx): [Calculation[], Iterable<[unknown[], unknown[][]], any, any>, Iterable<unknown[], any, any>]

Defined in: core/dist/visitors/executor.d.ts:193

Joins can be executed in different ways depending on the join conditions. This method determines the best way to execute the join and returns the remaining conditions to check and values.

Parameters

Parameter	Type	Description
iterOnce	PlanTupleOperator	the branch that is the outer iteration loop
iterPerRow	PlanTupleOperator	the branch that is the inner iteration loop
op	Join	the join operator
ctx	ExecutionContext	-

Returns

[Calculation[], Iterable<[unknown[], unknown[][]], any, any>, Iterable<unknown[], any, any>]

[remaining conditions, iterable of [outer item, array of matching inner items], all inner items]

Inherited from

Executor.joinValues

---

nestedLoopJoinValues()

protected nestedLoopJoinValues(iterOnce, iterPerRow, ctx): [Iterable<[unknown[], unknown[][]], any, any>, Iterable<unknown[], any, any>]

Defined in: core/dist/visitors/executor.d.ts:233

Materialises iterPerRow into an array, then pairs each iterOnce row with the full array, producing the nested-loop join input for the join variants.

Parameters

Parameter	Type
iterOnce	PlanTupleOperator
iterPerRow	PlanTupleOperator
ctx	ExecutionContext

Returns

[Iterable<[unknown[], unknown[][]], any, any>, Iterable<unknown[], any, any>]

Inherited from

Executor.nestedLoopJoinValues

---

prepareAggNullChecks()

protected prepareAggNullChecks(operator, ctx): (x, j) => boolean[]

Defined in: core/dist/visitors/executor.d.ts:249

Returns a per-aggregate, per-argument null-check function array used inside visitGroupBy to determine whether a row should be skipped (e.g. when the aggregate does not include nulls and the argument is the allAttrs sentinel).

Parameters

Parameter	Type
operator	GroupBy
ctx	ExecutionContext

Returns

(x, j) => boolean[]

Inherited from

Executor.prepareAggNullChecks

---

processItem()

protected processItem(item, ctx): unknown

Defined in: core/dist/visitors/executor.d.ts:94

Resolves a single value: looks up an ASTIdentifier in ctx, or evaluates a plan.Calculation and returns its first (and only expected) result.

Parameters

Parameter	Type
item	ASTIdentifier | Calculation
ctx	ExecutionContext

Returns

unknown

Inherited from

Executor.processItem

---

renameKeys()

protected renameKeys(item, oldKeys, newKeys): unknown[]

Defined in: core/dist/visitors/executor.d.ts:96

Rename the item to use another scope addressing

Parameters

Parameter	Type
item	unknown[]
oldKeys	number[]
newKeys	number[]

Returns

unknown[]

Inherited from

Executor.renameKeys

---

validateSingleValue()

protected validateSingleValue<T>(operator, items): Iterable<T>

Defined in: core/dist/visitors/executor.d.ts:236

Validates that an operator returns only a single value

Type Parameters

Type Parameter
T

Parameters

Parameter	Type
operator	{ validateSingleValue: boolean; }
operator.validateSingleValue	boolean
items	Iterable<T>

Returns

Iterable<T>

Inherited from

Executor.validateSingleValue

---

visitAggregate()

visitAggregate(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:275

Parameters

Parameter	Type
operator	AggregateCall
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitAggregate

Inherited from

Executor.visitAggregate

---

visitBidirectionalRecursion()

visitBidirectionalRecursion(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:156

Parameters

Parameter	Type
operator	BidirectionalRecursion
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitBidirectionalRecursion

Inherited from

Executor.visitBidirectionalRecursion

---

visitCalculation()

visitCalculation(operator, ctx): [unknown]

Defined in: core/dist/visitors/executor.d.ts:171

Evaluates operator synchronously and returns the single result value wrapped in a one-element tuple.

Parameters

Parameter	Type
operator	Calculation
ctx	ExecutionContext

Returns

[unknown]

Remarks

Unlike all other visitX methods, the return type is [unknown] - a single-element tuple - rather than Iterable<unknown>. This is intentional: a Calculation always produces exactly one value and the tuple avoids boxing overhead.

Implementation of

XQueryPlanVisitor.visitCalculation

Inherited from

Executor.visitCalculation

---

visitCartesianProduct()

visitCartesianProduct(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:173

Parameters

Parameter	Type
operator	CartesianProduct
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitCartesianProduct

Inherited from

Executor.visitCartesianProduct

---

visitConditional()

visitConditional(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:172

Parameters

Parameter	Type
operator	Conditional
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitConditional

Inherited from

Executor.visitConditional

---

visitDifference()

visitDifference(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:258

Parameters

Parameter	Type
operator	Difference
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitDifference

Inherited from

Executor.visitDifference

---

visitDifferenceItems()

protected visitDifferenceItems(left, right): Generator<unknown, void, unknown>

Defined in: core/dist/visitors/executor.d.ts:263

Item-mode difference: yields each element from left that does not appear in right. Used when neither operand is a tuple operator.

Parameters

Parameter	Type
left	Iterable<unknown>
right	Iterable<unknown>

Returns

Generator<unknown, void, unknown>

Inherited from

Executor.visitDifferenceItems

---

visitDistinct()

visitDistinct(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:273

Parameters

Parameter	Type
operator	Distinct
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitDistinct

Inherited from

Executor.visitDistinct

---

visitFnCall()

visitFnCall(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:161

Parameters

Parameter	Type
operator	FnCall
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitFnCall

Inherited from

Executor.visitFnCall

---

visitFullJoin()

protected visitFullJoin(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:184

Executes a full-outer join; called by visitJoin.

Parameters

Parameter	Type
operator	Join
ctx	ExecutionContext

Returns

Iterable<unknown>

Inherited from

Executor.visitFullJoin

---

visitGroupBy()

visitGroupBy(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:243

Parameters

Parameter	Type
operator	GroupBy
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitGroupBy

Inherited from

Executor.visitGroupBy

---

visitIndexedRecursion()

visitIndexedRecursion(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:98

Parameters

Parameter	Type
operator	IndexedRecursion
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitIndexedRecursion

Inherited from

Executor.visitIndexedRecursion

---

visitIndexScan()

visitIndexScan(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:279

Parameters

Parameter	Type
operator	IndexScan
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitIndexScan

Inherited from

Executor.visitIndexScan

---

visitInnerJoin()

protected visitInnerJoin(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:176

Executes a standard (non-outer) join; called by visitJoin.

Parameters

Parameter	Type
operator	Join
ctx	ExecutionContext

Returns

Iterable<unknown>

Inherited from

Executor.visitInnerJoin

---

visitIntersection()

visitIntersection(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:252

Parameters

Parameter	Type
operator	Intersection
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitIntersection

Inherited from

Executor.visitIntersection

---

visitIntersectionItems()

protected visitIntersectionItems(left, right): Generator<unknown, void, unknown>

Defined in: core/dist/visitors/executor.d.ts:257

Item-mode intersection: yields each element from right that also appears in left. Used when neither operand is a tuple operator.

Parameters

Parameter	Type
left	Iterable<unknown>
right	Iterable<unknown>

Returns

Generator<unknown, void, unknown>

Inherited from

Executor.visitIntersectionItems

---

visitItemFnSource()

visitItemFnSource(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:276

Parameters

Parameter	Type
operator	ItemFnSource
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitItemFnSource

Inherited from

Executor.visitItemFnSource

---

visitItemSource()

visitItemSource(operator, ctx): unknown[]

Defined in: lang-xquery/src/visitors/executor.ts:91

Resolves the named source from the database rather than from the execution context.

Parameters

Parameter	Type
operator	ItemSource
ctx	ExecutionContext

Returns

unknown[]

Implementation of

XQueryPlanVisitor.visitItemSource

Overrides

Executor.visitItemSource

---

visitJoin()

visitJoin(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:174

Parameters

Parameter	Type
operator	Join
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitJoin

Inherited from

Executor.visitJoin

---

visitLeftJoin()

protected visitLeftJoin(left, right, op, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:182

Executes a left-outer join: every row from left appears in the output, padded with nulls when no matching row exists in right. Called by visitJoin for both left-outer and right-outer cases (with sides swapped for the latter).

Parameters

Parameter	Type
left	PlanTupleOperator
right	PlanTupleOperator
op	Join
ctx	ExecutionContext

Returns

Iterable<unknown>

Inherited from

Executor.visitLeftJoin

---

visitLimit()

visitLimit(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:250

Parameters

Parameter	Type
operator	Limit
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitLimit

Inherited from

Executor.visitLimit

---

visitLiteral()

visitLiteral(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:162

Parameters

Parameter	Type
operator	Literal
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitLiteral

Inherited from

Executor.visitLiteral

---

visitMapFromItem()

visitMapFromItem(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:240

Parameters

Parameter	Type
operator	MapFromItem
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitMapFromItem

Inherited from

Executor.visitMapFromItem

---

visitMapToItem()

visitMapToItem(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:239

Parameters

Parameter	Type
operator	MapToItem
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitMapToItem

Inherited from

Executor.visitMapToItem

---

visitNullSource()

visitNullSource(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:274

Parameters

Parameter	Type
operator	NullSource
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitNullSource

Inherited from

Executor.visitNullSource

---

visitOrderBy()

visitOrderBy(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:242

Parameters

Parameter	Type
operator	OrderBy
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitOrderBy

Inherited from

Executor.visitOrderBy

---

visitProjection()

visitProjection(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:157

Parameters

Parameter	Type
operator	Projection
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitProjection

Inherited from

Executor.visitProjection

---

visitProjectionConcat()

visitProjectionConcat(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:234

Parameters

Parameter	Type
operator	ProjectionConcat
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitProjectionConcat

Inherited from

Executor.visitProjectionConcat

---

visitProjectionIndex()

visitProjectionIndex(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:241

Parameters

Parameter	Type
operator	ProjectionIndex
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitProjectionIndex

Inherited from

Executor.visitProjectionIndex

---

visitProjectionSize()

visitProjectionSize(operator, ctx): Iterable<unknown>

Defined in: lang-xquery/src/visitors/executor.ts:70

Parameters

Parameter	Type
operator	ProjectionSize
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitProjectionSize

---

visitQuantifier()

visitQuantifier(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:278

Parameters

Parameter	Type
operator	Quantifier
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitQuantifier

Inherited from

Executor.visitQuantifier

---

visitRecursion()

visitRecursion(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:97

Parameters

Parameter	Type
operator	Recursion
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitRecursion

Inherited from

Executor.visitRecursion

---

visitSelection()

visitSelection(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:158

Parameters

Parameter	Type
operator	Selection
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitSelection

Inherited from

Executor.visitSelection

---

visitTreeJoin()

visitTreeJoin(operator, ctx): Iterable<unknown>

Defined in: lang-xquery/src/visitors/executor.ts:36

Parameters

Parameter	Type
operator	TreeJoin
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitTreeJoin

---

visitTupleFnSource()

visitTupleFnSource(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:277

Parameters

Parameter	Type
operator	TupleFnSource
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitTupleFnSource

Inherited from

Executor.visitTupleFnSource

---

visitTupleSource()

visitTupleSource(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:159

Parameters

Parameter	Type
operator	TupleSource
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitTupleSource

Inherited from

Executor.visitTupleSource

---

visitUnion()

visitUnion(operator, ctx): Iterable<unknown>

Defined in: core/dist/visitors/executor.d.ts:251

Parameters

Parameter	Type
operator	Union
ctx	ExecutionContext

Returns

Iterable<unknown>

Implementation of

XQueryPlanVisitor.visitUnion

Inherited from

Executor.visitUnion