Class SequenceType

SequenceType specifies the expected type and cardinality of a sequence

Special cases:

empty-sequence() : represents a sequence with no items
item() : matches any single item
xs:integer+ : one or more integers

Index

Constructors

Methods

getItemType getOccurrence isEmptySequence allowsZeroItems allowsMultipleItems requiresItems toString getMinCardinality getMaxCardinality isCompatibleWith

Constructors

constructor

new SequenceType(
itemType: ItemType | "empty",
occurrence?: OccurrenceIndicator,
): SequenceType
Create a SequenceType
Parameters
- itemType: ItemType | "empty"
  The ItemType (or 'empty' for empty-sequence())
- occurrence: OccurrenceIndicator = OccurrenceIndicator.EXACTLY_ONE
  The occurrence indicator (default: EXACTLY_ONE)
Returns SequenceType
- Defined in types/sequence-type.ts:124

Methods

getItemType

getItemType(): ItemType | "empty"
Get the ItemType

Returns ItemType | "empty"
- Defined in types/sequence-type.ts:138

getOccurrence

getOccurrence(): OccurrenceIndicator
Get the OccurrenceIndicator

Returns OccurrenceIndicator
- Defined in types/sequence-type.ts:145

isEmptySequence

isEmptySequence(): boolean
Check if this is empty-sequence()

Returns boolean
- Defined in types/sequence-type.ts:152

allowsZeroItems

allowsZeroItems(): boolean
Check if this type allows zero items

Returns boolean
- Defined in types/sequence-type.ts:159

allowsMultipleItems

allowsMultipleItems(): boolean
Check if this type allows multiple items

Returns boolean
- Defined in types/sequence-type.ts:170

requiresItems

requiresItems(): boolean
Check if this type requires at least one item

Returns boolean
- Defined in types/sequence-type.ts:180

toString

toString(): string
Get a string representation of this SequenceType Examples: "empty-sequence()", "xs:integer", "xs:integer?", "element(*)"

Returns string
- Defined in types/sequence-type.ts:188

getMinCardinality

getMinCardinality(): number
Get the minimum cardinality allowed by this type 0 = allows empty, 1 = requires at least one item

Returns number
- Defined in types/sequence-type.ts:204

getMaxCardinality

getMaxCardinality(): number
Get the maximum cardinality allowed by this type 1 = exactly one item, Infinity = unbounded

Returns number
- Defined in types/sequence-type.ts:215

isCompatibleWith

isCompatibleWith(other: SequenceType): boolean
Check if another SequenceType is compatible with this one (i.e., can values of that type be assigned to this type)

This is a simple compatibility check. Full implementation would require schema information and type hierarchy checking.
Parameters
- other: SequenceType
Returns boolean
- Defined in types/sequence-type.ts:229