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cloud-cap-samples/bookstore/app/genres/tree-view.cds

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using { AdminService } from '@capire/bookstore';
////////////////////////////////////////////////////////////////////////////
//
// Genres Tree View
//
// Tell Fiori about the structure of the hierarchy
annotate AdminService.Genres with @Aggregation.RecursiveHierarchy #GenresHierarchy : {
ParentNavigationProperty : parent, // navigates to a node's parent
NodeProperty : ID, // identifies a node, usually the key
};
// Fiori expects the following to be defined explicitly, even though they're always the same
extend AdminService.Genres with @(
// The columns expected by Fiori to be present in hierarchy entities
Hierarchy.RecursiveHierarchy #GenresHierarchy : {
LimitedDescendantCount : LimitedDescendantCount,
DistanceFromRoot : DistanceFromRoot,
DrillState : DrillState,
LimitedRank : LimitedRank
},
// Disallow filtering on these properties from Fiori UIs
Capabilities.FilterRestrictions.NonFilterableProperties: [
'LimitedDescendantCount',
'DistanceFromRoot',
'DrillState',
'LimitedRank'
],
// Disallow sorting on these properties from Fiori UIs
Capabilities.SortRestrictions.NonSortableProperties : [
'LimitedDescendantCount',
'DistanceFromRoot',
'DrillState',
'LimitedRank'
],
) columns { // Ensure we can query these fields from database
null as LimitedDescendantCount : Int16,
null as DistanceFromRoot : Int16,
null as DrillState : String,
null as LimitedRank : Int16,
};