API Reference > presentation-backend > Core > PresentationManager PresentationManager Class Backend Presentation manager which pulls the presentation data from an iModel using native platform. Methods Name Description constructor(props?: PresentationManagerProps): PresentationManager Creates an instance of PresentationManager. computeSelection(requestContext: ClientRequestContext, requestOptions: SelectionScopeRequestOptions<IModelDb>, ids: Id64String[], scopeId: string): Promise<KeySet> Computes selection set based on provided selection scope. dispose(): void Dispose the presentation manager. getContent(requestContext: ClientRequestContext, requestOptions: Paged<ContentRequestOptions<IModelDb>>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet): Promise<Content | undefined> Retrieves the content based on the supplied content descriptor override. getContentAndSize(requestContext: ClientRequestContext, requestOptions: Paged<ContentRequestOptions<IModelDb>>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet): Promise<{ content: Content, size: number }> Retrieves the content and content size based on supplied content descriptor override. getContentDescriptor(requestContext: ClientRequestContext, requestOptions: ContentRequestOptions<IModelDb>, displayType: string, keys: KeySet, selection: SelectionInfo | undefined): Promise<Descriptor | undefined> Retrieves the content descriptor which can be used to get content. getContentSetSize(requestContext: ClientRequestContext, requestOptions: ContentRequestOptions<IModelDb>, descriptorOrOverrides: Descriptor | DescriptorOverrides, keys: KeySet): Promise<number> Retrieves the content set size based on the supplied content descriptor override. getDisplayLabel(requestContext: ClientRequestContext, requestOptions: LabelRequestOptions<IModelDb>, key: InstanceKey): Promise<string> Retrieves display label of specific item Deprecated getDisplayLabelDefinition(requestContext: ClientRequestContext, requestOptions: LabelRequestOptions<IModelDb>, key: InstanceKey): Promise<LabelDefinition> Retrieves display label definition of specific item getDisplayLabels(requestContext: ClientRequestContext, requestOptions: LabelRequestOptions<IModelDb>, instanceKeys: InstanceKey[]): Promise<string[]> Retrieves display labels of specific items Deprecated getDisplayLabelsDefinitions(requestContext: ClientRequestContext, requestOptions: LabelRequestOptions<IModelDb>, instanceKeys: InstanceKey[]): Promise<LabelDefinition[]> Retrieves display labels definitions of specific items getDistinctValues(requestContext: ClientRequestContext, requestOptions: ContentRequestOptions<IModelDb>, descriptor: Descriptor, keys: KeySet, fieldName: string, maximumValueCount: number = 0): Promise<string[]> Retrieves distinct values of specific field from the content based on the supplied content descriptor override. getFilteredNodePaths(requestContext: ClientRequestContext, requestOptions: HierarchyRequestOptions<IModelDb>, filterText: string): Promise<NodePathElement[]> Retrieves paths from root nodes to nodes containing filter text in their label. getNodePaths(requestContext: ClientRequestContext, requestOptions: HierarchyRequestOptions<IModelDb>, paths: InstanceKey[][], markedIndex: number): Promise<NodePathElement[]> Retrieves paths from root nodes to children nodes according to specified keys. getNodes(requestContext: ClientRequestContext, requestOptions: Paged<HierarchyRequestOptions<IModelDb>>, parentKey?: NodeKey): Promise<Node[]> Retrieves nodes getNodesAndCount(requestContext: ClientRequestContext, requestOptions: Paged<HierarchyRequestOptions<IModelDb>>, parentKey?: NodeKey): Promise<{ count: number, nodes: Node[] }> Retrieves nodes and node count getNodesCount(requestContext: ClientRequestContext, requestOptions: HierarchyRequestOptions<IModelDb>, parentKey?: NodeKey): Promise<number> Retrieves nodes count getSelectionScopes(requestContext: ClientRequestContext, requestOptions: SelectionScopeRequestOptions<IModelDb>): Promise<SelectionScope[]> Retrieves available selection scopes. loadHierarchy(requestContext: ClientRequestContext, requestOptions: HierarchyRequestOptions<IModelDb>): Promise<void> Loads the whole hierarchy with the specified parameters Beta rulesets(): RulesetManager Get rulesets manager vars(rulesetId: string): RulesetVariablesManager Get ruleset variables manager for specific ruleset Properties Name Type Description activeLocale string | undefined Get / set active locale used for localizing presentation data props Accessor ReadOnly PresentationManagerProps Properties used to initialize the manager Defined in presentation/backend/src/PresentationManager.ts Line 139 Last Updated: 13 June, 2024