API Reference > imodeljs-backend > iModels > ChangeSummaryManager ChangeSummaryManager Class Beta Class to extract Change Summaries for a briefcase. See also: ChangeSummary Overview Methods Name Description attachChangeCache(iModel: IModelDb): void Static Attaches the Change Cache file to the specified iModel if it hasn't been attached yet. buildPropertyValueChangesECSql(iModel: IModelDb, instanceChangeInfo: { changedInstance: { className: string, id: Id64String }, id: Id64String, summaryId: Id64String }, changedValueState: ChangedValueState, changedPropertyNames?: string[]): string Static Builds the ECSQL to query the property value changes for the specified instance change and the specified ChangedValueState. detachChangeCache(iModel: IModelDb): void Static Detaches the Change Cache file from the specified iModel. downloadChangeSets(requestContext: AuthorizedClientRequestContext, ctx: ChangeSummaryExtractContext, startChangeSetId: GuidString, endChangeSetId: GuidString): Promise<ChangeSet[]> Static extractChangeSummaries(requestContext: AuthorizedClientRequestContext, iModel: IModelDb, options?: ChangeSummaryExtractOptions): Promise<Id64String[]> Static Extracts change summaries from the specified iModel. getChangedPropertyValueNames(iModel: IModelDb, instanceChangeId: Id64String): string[] Static Retrieves the names of the properties whose values have changed for the given instance change isChangeCacheAttached(iModel: IModelDb): boolean Static Determines whether the Change Cache file is attached to the specified iModel or not queryChangeSummary(iModel: IModelDb, changeSummaryId: Id64String): ChangeSummary Static Queries the ChangeSummary for the specified change summary id queryInstanceChange(iModel: IModelDb, instanceChangeId: Id64String): InstanceChange Static Queries the InstanceChange for the specified instance change id. Defined in core/backend/src/ChangeSummaryManager.ts Line 80 Last Updated: 13 June, 2024