From 814b562e400c6c221dd237813b0de3565371d8d3 Mon Sep 17 00:00:00 2001
From: dajiaohuang <mikewushuwen@outlook.com>
Date: Tue, 27 Oct 2026 06:50:24 +0800
Subject: [PATCH] [ZEPPELIN-6593] Preserve false interpreter property values

---
 .../interpreter/item/item.component.html      |  2 +-
 .../interpreter/item/item.component.spec.ts   | 42 +++++++++++++++++++
 .../interpreter/item/item.component.ts        |  4 ++
 3 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.spec.ts

diff --git a/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.html b/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.html
index d54ae21ff54..cb07f5a4b5a 100644
--- a/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.html
+++ b/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.html
@@ -361,7 +361,7 @@ <h3 class="form-title">Properties</h3>
                       </a>
                     }
                     @default {
-                      {{ control.get('value')?.value || '' }}
+                      {{ displayPropertyValue(control.get('value')?.value) }}
                     }
                   }
                 }
diff --git a/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.spec.ts b/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.spec.ts
new file mode 100644
index 00000000000..20359979273
--- /dev/null
+++ b/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.spec.ts
@@ -0,0 +1,42 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import type { ChangeDetectorRef } from '@angular/core';
+import { describe, expect, it } from 'vitest';
+
+import type { SecurityService, TicketService, InterpreterService } from '@zeppelin/services';
+
+import type { InterpreterComponent } from '../interpreter.component';
+import { InterpreterItemComponent } from './item.component';
+
+const createComponent = () =>
+  new InterpreterItemComponent(
+    {} as InterpreterComponent,
+    {} as TicketService,
+    {} as SecurityService,
+    {} as InterpreterService,
+    {} as ChangeDetectorRef
+  );
+
+describe('InterpreterItemComponent.displayPropertyValue', () => {
+  it.each([false, true])('preserves the boolean value %s', value => {
+    const component = createComponent();
+
+    expect(component.displayPropertyValue(value)).toBe(value);
+  });
+
+  it.each([null, undefined])('renders an absent value as empty', value => {
+    const component = createComponent();
+
+    expect(component.displayPropertyValue(value)).toBe('');
+  });
+});
diff --git a/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.ts b/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.ts
index 06634bff485..cc7fe2a0267 100644
--- a/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.ts
+++ b/zeppelin-web-angular/src/app/pages/workspace/interpreter/item/item.component.ts
@@ -97,6 +97,10 @@ export class InterpreterItemComponent extends DestroyHookComponent implements On
 
   interpreterRunningOption = 'Globally';
 
+  displayPropertyValue(value: PropertyValue | undefined): PropertyValue {
+    return value ?? '';
+  }
+
   switchToEditMode(): void {
     this.setupEditableForm();
     this.formGroup.enable();