Class SchemaInferrer

Constructors

constructor

new SchemaInferrer(
    store: WindowStore,
    options: OptionsWithDefaults,
    prefLang?: string,
): SchemaInferrer
Parameters
- store: WindowStore
- options: OptionsWithDefaults
- prefLang: string = 'en'
Returns SchemaInferrer
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:29

Properties

`Private`colIds

colIds: Record<string, number> = {}

`Private`loadedVocabs

loadedVocabs: string[] = []

`Private`options

options: OptionsWithDefaults

`Private`prefLang

prefLang: string = 'en'

schema

schema: TableGroupSchema = ...

`Private`store

store: WindowStore

unknownSchema

unknownSchema: TableSchema

Methods

addQuadToSchema

addQuadToSchema(quad: Quad, addToUnknown?: boolean): Promise<void>
Incorporates a quad into the current schema.
Parameters
- quad: Quad
  The quad to add.
- addToUnknown: boolean = false
  Whether to add to the unknown schema or skip the quad if it has no types.
Returns Promise<void>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:56

`Private`addToTable

addToTable(
    quad: Quad,
    label: string,
    colnamePrefix: string,
    dtype: CsvwBuiltinDatatype | CsvwDatatype,
    table: TableSchema,
): Promise<void>
Adds a column to a table, creating a new table if there are multiple values for a single predicate or if the table is locked.
Parameters
- quad: Quad
  The quad to process.
- label: string
  The label for the column.
- colnamePrefix: string
  The prefix for the column name.
- dtype: CsvwBuiltinDatatype | CsvwDatatype
  The datatype of the column.
- table: TableSchema
  The table to add the column to.
Returns Promise<void>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:108

`Private`addToUnknownSchema

addToUnknownSchema(
    quad: Quad,
    label: string,
    colnamePrefix: string,
    dtype: CsvwBuiltinDatatype | CsvwDatatype,
): Promise<void>
Adds a column to the unknown schema.
Parameters
- quad: Quad
  The quad to process.
- label: string
  The label for the column.
- colnamePrefix: string
  The prefix for the column name.
- dtype: CsvwBuiltinDatatype | CsvwDatatype
  The datatype of the column.
Returns Promise<void>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:232

`Private`commonUriTemplate

commonUriTemplate(curTemplate: string, nextIri: string, colName: string): string
Parameters
- curTemplate: string
- nextIri: string
- colName: string
Returns string
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:367

`Private`getColName

getColName(table: TableSchema, colnamePrefix: string, iri: string): string
Parameters
- table: TableSchema
- colnamePrefix: string
- iri: string
Returns string
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:263

`Private`getDatatype

getDatatype(quad: Quad): CsvwBuiltinDatatype | CsvwDatatype
Parameters
- quad: Quad
Returns CsvwBuiltinDatatype | CsvwDatatype
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:355

`Private`getLabel

getLabel(iri: NamedNode): Promise<string>
Parameters
- iri: NamedNode
Returns Promise<string>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:303

`Private`getRelTable

getRelTable(
    table: TableSchema,
    quad: Quad,
    colnamePrefix: string,
): Promise<TableSchema>
Gets the table for a specific subject + predicate combination.
Parameters
- table: TableSchema
- quad: Quad
- colnamePrefix: string
Returns Promise<TableSchema>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:135

`Private`getSubjTables

getSubjTables(quad: Quad): Promise<TableSchema[]>
Parameters
- quad: Quad
Returns Promise<TableSchema[]>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:274

`Private`hasMultipleValues

hasMultipleValues(quad: Quad): Promise<boolean>
Parameters
- quad: Quad
Returns Promise<boolean>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:187

inferSchema

inferSchema(): Promise<void>
Infers the schema from the RDF data in the store, consuming the whole underlying stream.

Returns Promise<void>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:38

`Private`loadVocab

loadVocab(iri: string): Promise<void>
Parameters
- iri: string
Returns Promise<void>
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:335

lockCurrentSchema

lockCurrentSchema(lockTemplateUris?: boolean): void
Lock the current tables. If new quads are processed, they will create new tables instead of modifying the current ones.
Parameters
- lockTemplateUris: boolean = false
  If locked, the template URIs will be fixed to {+colname} to be future proof.
Returns void
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:83

`Private`updateAboutUrl

updateAboutUrl(table: TableSchema, quad: Quad): void
Parameters
- table: TableSchema
- quad: Quad
Returns void
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:199

`Private`updateValueUrl

updateValueUrl(col: ColumnSchema, quad: Quad): void
Parameters
- col: ColumnSchema
- quad: Quad
Returns void
- Defined in packages/core/src/lib/rdf2csvw/schema-inferrer.ts:210

Class SchemaInferrer

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

Returns SchemaInferrer

Properties

PrivatecolIds

PrivateloadedVocabs

Privateoptions

PrivateprefLang

schema

Privatestore

unknownSchema

Methods

addQuadToSchema

Parameters

Returns Promise<void>

PrivateaddToTable

Parameters

Returns Promise<void>

PrivateaddToUnknownSchema

Parameters

Returns Promise<void>

PrivatecommonUriTemplate

Parameters

Returns string

PrivategetColName

Parameters

Returns string

PrivategetDatatype

Parameters

Returns CsvwBuiltinDatatype | CsvwDatatype

PrivategetLabel

Parameters

Returns Promise<string>

PrivategetRelTable

Parameters

Returns Promise<TableSchema>

PrivategetSubjTables

Parameters

Returns Promise<TableSchema[]>

PrivatehasMultipleValues

Parameters

Returns Promise<boolean>

inferSchema

Returns Promise<void>

PrivateloadVocab

Parameters

Returns Promise<void>

lockCurrentSchema

Parameters

Returns void

PrivateupdateAboutUrl

Parameters

Returns void

PrivateupdateValueUrl

Parameters

Returns void

Settings

On This Page

`Private`colIds

`Private`loadedVocabs

`Private`options

`Private`prefLang

`Private`store

`Private`addToTable

`Private`addToUnknownSchema

`Private`commonUriTemplate

`Private`getColName

`Private`getDatatype

`Private`getLabel

`Private`getRelTable

`Private`getSubjTables

`Private`hasMultipleValues

`Private`loadVocab

`Private`updateAboutUrl

`Private`updateValueUrl