Class OntologyCache

Caches ontologies obtained from Knora and handles direct dependencies between ontologies.

Hierarchy

GenericCache<ReadOntology>
- OntologyCache

Index

Constructors

constructor

Methods

Constructors

constructor

new OntologyCache(knoraApiConfig: KnoraApiConfig, v2Endpoint: V2Endpoint): OntologyCache

- Defined in src/cache/ontology-cache/OntologyCache.ts:17
Parameters
- knoraApiConfig: KnoraApiConfig
- v2Endpoint: V2Endpoint
Returns OntologyCache

Methods

Protected getDependenciesOfItem

getDependenciesOfItem(item: ReadOntology): string[]

Overrides GenericCache.getDependenciesOfItem
- Defined in src/cache/ontology-cache/OntologyCache.ts:154
Parameters
- item: ReadOntology
Returns string[]

Protected getItem

getItem(key: string, isDependency?: boolean): AsyncSubject<ReadOntology>

Inherited from GenericCache.getItem
- Defined in src/cache/GenericCache.ts:30
Gets a specific item from the cache. If not cached yet, the information will be fetched from Knora.

Parameters
- key: string
  
  the id of the item to be returned.
- Default value isDependency: boolean = false
  
  true if the item to be returned is a dependency of another item (recursive call to this method).
Returns AsyncSubject<ReadOntology>

the requested item.

Protected getKeyOfItem

getKeyOfItem(item: ReadOntology): string

Overrides GenericCache.getKeyOfItem
- Defined in src/cache/ontology-cache/OntologyCache.ts:150
Parameters
- item: ReadOntology
Returns string

getOntology

getOntology(ontologyIri: string): Observable<Map<string, ReadOntology>>

- Defined in src/cache/ontology-cache/OntologyCache.ts:31
Gets an ontology from the cache including its direct dependencies.

The ontology Iris are the keys of the resulting Map.

Parameters
- ontologyIri: string
  
  the Iri of the ontology.
Returns Observable<Map<string, ReadOntology>>

the requested ontology and its direct dependencies.

getResourceClassDefinition

getResourceClassDefinition(resourceClassIri: string): Observable<ResourceClassAndPropertyDefinitions>

- Defined in src/cache/ontology-cache/OntologyCache.ts:79
Gets a resource class definition including the property definitions the resource class has cardinalities for.

This method does not return third party ontology entities, e.g., rdfs.

Parameters
- resourceClassIri: string
Returns Observable<ResourceClassAndPropertyDefinitions>

Protected reloadItem

reloadItem(key: string): AsyncSubject<ReadOntology>

Inherited from GenericCache.reloadItem
- Defined in src/cache/GenericCache.ts:101
Deletes an existing entry in the cache and requests information from Knora.

Parameters
- key: string
  
  the id of the information to be returned.
Returns AsyncSubject<ReadOntology>

the item.

Protected requestItemFromKnora

requestItemFromKnora(key: string, isDependency: boolean): Observable<ReadOntology[]>

Overrides GenericCache.requestItemFromKnora
- Defined in src/cache/ontology-cache/OntologyCache.ts:144
Parameters
- key: string
- isDependency: boolean
Returns Observable<ReadOntology[]>

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