feat(ui): Provide filtering capability for Sub Types inside the UI (d…

…atahub-project#3479)

datahub-web-react/src/app/search/SearchFilterLabel.tsx

@@ -5,6 +5,7 @@ import styled from 'styled-components';
 
 import { AggregationMetadata, DataPlatform, EntityType, GlossaryTerm, Tag as TagType } from '../../types.generated';
 import { StyledTag } from '../entity/shared/components/styled/StyledTag';
+import { capitalizeFirstLetter } from '../shared/capitalizeFirstLetter';
 import { useEntityRegistry } from '../useEntityRegistry';
 import { ENTITY_FILTER_NAME } from './utils/constants';
 
@@ -71,6 +72,18 @@ export const SearchFilterLabel = ({ aggregation, field }: Props) => {
         );
     }
 
+    // Warning: Special casing for Sub-Types
+    if (field === 'typeNames') {
+        const subTypeDisplayName = capitalizeFirstLetter(aggregation.value);
+        return (
+            <>
+                <span>
+                    {subTypeDisplayName} ({countText})
+                </span>
+            </>
+        );
+    }
+
     return (
         <>
             {aggregation.value} ({countText})

metadata-io/src/main/java/com/linkedin/metadata/search/aggregator/AllEntitiesSearchAggregator.java

@@ -49,7 +49,7 @@ public class AllEntitiesSearchAggregator {
   private final EntitySearchServiceCache _entitySearchServiceCache;
 
   private static final List<String> FILTER_RANKING =
-      ImmutableList.of("entity", "platform", "origin", "tags", "glossaryTerms");
+      ImmutableList.of("entity", "typeNames", "platform", "origin", "tags", "glossaryTerms");
 
   public AllEntitiesSearchAggregator(EntityRegistry entityRegistry, EntitySearchService entitySearchService,
       SearchRanker searchRanker, CacheManager cacheManager, int batchSize) {

metadata-models/src/main/pegasus/com/linkedin/common/SubTypes.pdl

@@ -12,6 +12,14 @@ record SubTypes {
   /**
    * The names of the specific types.
    **/
+   @Searchable = {
+     "/*": {
+      "fieldType": "KEYWORD",
+      "addToFilters": true,
+      "filterNameOverride": "Sub Type",
+      "queryByDefault": true
+     }
+   }
   typeNames: array[string]
 
 }