Merge branch 'dmdimitrov/hgrid-advanced-filtering' of https://github.com/IgniteUI/igniteui-angular into dmdimitrov/hgrid-advanced-filtering

Author: teodosiah

CHANGELOG.md

@@ -13,6 +13,13 @@ All notable changes for each version of this project will be documented in this
     - A column's `minWidth` and `maxWidth` constrain the user-specified `width` so that it cannot go outside their bounds.
     - In SSR mode grid with height 100% or with no height will render on the server with % size and with no data. The grid will show either the empty grid template or the loading indicator (if isLoading is true).
     - In SSR mode grid with width 100% or with no width will render on the server with % size and with all columns.
+- `IgxHierarchicalGrid`
+    - New advanced filtering functionality is implemented.
+    - Added a new `schema` input property that can be used to pass collection of `EntityType` objects. This property is required for remote data scenarios.
+- `IgxQueryBuilderComponent`, `IgxAdvancedFilteringDialogComponent`
+    - Added support for entities with hierarchical structure.
+- `EntityType`
+    - A new optional property called `childEntities` has been introduced that can be used to create nested entities.
 
 ## 19.1.1
 ### New Features

projects/igniteui-angular/src/lib/data-operations/filtering-condition.ts

@@ -50,7 +50,7 @@ export class IgxFilteringOperand {
     public conditionList(): string[] {
         return this.operations.filter(f => !f.hidden && !f.isNestedQuery).map((element) => element.name);
     }
-    
+
     /**
      * Returns an array of names of the conditions which are visible in the UI, including "In" and "Not In", allowing the creation of sub-queries.
      * @hidden @internal

projects/igniteui-angular/src/lib/grids/hierarchical-grid/hierarchical-grid.component.ts

@@ -563,14 +563,14 @@ export class IgxHierarchicalGridComponent extends IgxHierarchicalGridBaseDirecti
     }
 
     /**
-     * Gets/Sets the entities used for advanced filtering.
+     * Gets/Sets the collection of `EntityType` objects represented in hierarchical structure, which will be used in the advanced filtering dialog.
      *
      * @remarks
      * This property is required in remote data scenarios.
      * @example
      * ```typescript
      * const schema = this.grid.schema;
-     * this.grid.schema = [];
+     * this.grid.schema = [{ name: 'Products', fields: [...], childEntities: [...] }];
      * ```
      */
     @Input()