[ML] Fixing use_null setting in advanced job wizard (#100028)

* [ML] Fixing use_null setting in advanced job wizard

* fixing types

* fixing false checks for detector fields

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/ml/public/application/jobs/new_job/common/job_creator/advanced_job_creator.ts

@@ -32,6 +32,7 @@ export interface RichDetector {
   excludeFrequent: estypes.ExcludeFrequent | null;
   description: string | null;
   customRules: CustomRule[] | null;
+  useNull: boolean | null;
 }
 
 export class AdvancedJobCreator extends JobCreator {
@@ -58,7 +59,8 @@ export class AdvancedJobCreator extends JobCreator {
     overField: SplitField,
     partitionField: SplitField,
     excludeFrequent: estypes.ExcludeFrequent | null,
-    description: string | null
+    description: string | null,
+    useNull: boolean | null
   ) {
     // addDetector doesn't support adding new custom rules.
     // this will be added in the future once it's supported in the UI
@@ -71,7 +73,8 @@ export class AdvancedJobCreator extends JobCreator {
       partitionField,
       excludeFrequent,
       description,
-      customRules
+      customRules,
+      useNull
     );
 
     this._addDetector(detector, agg, field);
@@ -86,7 +89,8 @@ export class AdvancedJobCreator extends JobCreator {
     partitionField: SplitField,
     excludeFrequent: estypes.ExcludeFrequent | null,
     description: string | null,
-    index: number
+    index: number,
+    useNull: boolean | null
   ) {
     const customRules =
       this._detectors[index] !== undefined ? this._detectors[index].custom_rules || null : null;
@@ -99,7 +103,8 @@ export class AdvancedJobCreator extends JobCreator {
       partitionField,
       excludeFrequent,
       description,
-      customRules
+      customRules,
+      useNull
     );
 
     this._editDetector(detector, agg, field, index);
@@ -117,7 +122,8 @@ export class AdvancedJobCreator extends JobCreator {
     partitionField: SplitField,
     excludeFrequent: estypes.ExcludeFrequent | null,
     description: string | null,
-    customRules: CustomRule[] | null
+    customRules: CustomRule[] | null,
+    useNull: boolean | null
   ): { detector: Detector; richDetector: RichDetector } {
     const detector: Detector = createBasicDetector(agg, field);
 
@@ -139,6 +145,9 @@ export class AdvancedJobCreator extends JobCreator {
     if (customRules !== null) {
       detector.custom_rules = customRules;
     }
+    if (useNull !== null) {
+      detector.use_null = useNull;
+    }
 
     const richDetector: RichDetector = {
       agg,
@@ -149,6 +158,7 @@ export class AdvancedJobCreator extends JobCreator {
       excludeFrequent,
       description,
       customRules,
+      useNull,
     };
 
     return { detector, richDetector };
@@ -209,7 +219,8 @@ export class AdvancedJobCreator extends JobCreator {
           dtr.overField,
           dtr.partitionField,
           dtr.excludeFrequent,
-          dtr.description
+          dtr.description,
+          dtr.useNull
         );
       }
     });

x-pack/plugins/ml/public/application/jobs/new_job/common/job_creator/util/general.ts

@@ -79,8 +79,9 @@ export function getRichDetectors(
       byField,
       overField,
       partitionField,
-      excludeFrequent: d.exclude_frequent || null,
+      excludeFrequent: d.exclude_frequent ?? null,
-      description: d.detector_description || null,
+      description: d.detector_description ?? null,
+      useNull: d.use_null ?? null,
     };
   });
 }

x-pack/plugins/ml/public/application/jobs/new_job/pages/components/pick_fields_step/components/advanced_detector_modal/advanced_detector_modal.tsx

@@ -177,6 +177,7 @@ export const AdvancedDetectorModal: FC<Props> = ({
           : null,
       description: descriptionOption !== '' ? descriptionOption : null,
       customRules: null,
+      useNull: null,
     };
     setDetector(dtr);
     setDescriptionPlaceholder(dtr);

x-pack/plugins/ml/public/application/jobs/new_job/pages/components/pick_fields_step/components/advanced_view/metric_selection.tsx

@@ -29,6 +29,7 @@ const emptyRichDetector: RichDetector = {
   excludeFrequent: null,
   description: null,
   customRules: null,
+  useNull: null,
 };
 
 export const AdvancedDetectors: FC<Props> = ({ setIsValid }) => {
@@ -51,7 +52,8 @@ export const AdvancedDetectors: FC<Props> = ({ setIsValid }) => {
         dtr.overField,
         dtr.partitionField,
         dtr.excludeFrequent,
-        dtr.description
+        dtr.description,
+        dtr.useNull
       );
     } else {
       jobCreator.editDetector(
@@ -62,7 +64,8 @@ export const AdvancedDetectors: FC<Props> = ({ setIsValid }) => {
         dtr.partitionField,
         dtr.excludeFrequent,
         dtr.description,
-        index
+        index,
+        dtr.useNull
       );
     }
     jobCreatorUpdate();