Fix/mbm

[lu-yg]

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Please check if your PR fulfills the following requirements:

• The commit message follows our Commit Message Guidelines
• Tests for the changes have been added (for bug fixes / features)
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PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

Background and solution

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

Summary by CodeRabbit

• New Features

  • Introduced a post-save extension point for pages, allowing custom actions after a page is created or updated.

• Refactor

  • Updated database schema to allow the tenant ID field to be optional across multiple tables.

• Chores

  • Adjusted automated field population to no longer set tenant or renter IDs during data insertion.
  • Updated related tests to reflect changes in field handling.

[coderabbitai]

Walkthrough

The changes update SQL schema and migration scripts to make the tenant_id column nullable across multiple tables for both H2 and MySQL databases. Java code is adjusted to remove automatic population of tenantId, renterId, and siteId fields. Additionally, a new PostSaveHook interface is introduced, and PageServiceImpl is extended to optionally invoke this hook after saving a Page.

Changes

File(s)	Change Summary
app/src/main/resources/sql/h2/create_all_tables_ddl_v1.h2.sql app/src/main/resources/sql/mysql/create_all_tables_ddl_v1.mysql.sql	Removed the NOT NULL constraint from the tenant_id column in all relevant tables.
app/src/main/resources/sql/h2/update_all_tables_ddl.sql app/src/main/resources/sql/mysql/update_all_tables_ddl.sql	Modified migration scripts to alter tenant_id columns to allow NULL values in multiple tables.
base/src/main/java/com/tinyengine/it/common/handler/MyMetaObjectHandler.java	Stopped setting tenantId, renterId, and siteId during insert fill operations.
base/src/main/java/com/tinyengine/it/service/app/impl/PageServiceImpl.java	Added optional dependency on PostSaveHook and invoked it after saving or updating a Page.
base/src/main/java/com/tinyengine/it/service/extend/PostSaveHook.java	Introduced new PostSaveHook interface with method afterSave(Page page).
base/src/test/java/com/tinyengine/it/common/handler/MyMetaObjectHandlerTest.java	Updated test to expect 5 instead of 8 calls to hasSetter in testInsertFill.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant PageServiceImpl
    participant PostSaveHook (optional)
    Client->>PageServiceImpl: create/update Page
    PageServiceImpl->>PageServiceImpl: Save Page and PageHistory
    alt PostSaveHook present
        PageServiceImpl->>PostSaveHook (optional): afterSave(Page)
    end
    PageServiceImpl-->>Client: Return result

Loading

Poem

In fields where tenants once must dwell,
Now empty nests are just as well.
A hook appears, post-save delight—
Page saved, then magic out of sight.
Fewer fields to fill, less test to mock,
The schema’s lighter, rabbits hop! 🐇

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between c6b8c14 and 0e44141.

📒 Files selected for processing (8)

• app/src/main/resources/sql/h2/create_all_tables_ddl_v1.h2.sql (20 hunks)
• app/src/main/resources/sql/h2/update_all_tables_ddl.sql (1 hunks)
• app/src/main/resources/sql/mysql/create_all_tables_ddl_v1.mysql.sql (20 hunks)
• app/src/main/resources/sql/mysql/update_all_tables_ddl.sql (1 hunks)
• base/src/main/java/com/tinyengine/it/common/handler/MyMetaObjectHandler.java (0 hunks)
• base/src/main/java/com/tinyengine/it/service/app/impl/PageServiceImpl.java (4 hunks)
• base/src/main/java/com/tinyengine/it/service/extend/PostSaveHook.java (1 hunks)
• base/src/test/java/com/tinyengine/it/common/handler/MyMetaObjectHandlerTest.java (1 hunks)

💤 Files with no reviewable changes (1)

• base/src/main/java/com/tinyengine/it/common/handler/MyMetaObjectHandler.java

🔇 Additional comments (11)

base/src/main/java/com/tinyengine/it/service/extend/PostSaveHook.java (1)

1-29: Clean and well-structured extension interface

The PostSaveHook interface serves as a clear extension point for post-save operations on Page entities. The design follows good practices by:

• Defining a focused, single-method interface
• Using clear naming convention that indicates its purpose
• Properly documenting the method and parameters

This approach enables flexible extension of the page saving process without modifying core service logic.

base/src/main/java/com/tinyengine/it/service/app/impl/PageServiceImpl.java (4)

47-47: Appropriate import for the new hook interface

Import statement for the new PostSaveHook interface is correctly placed with the other service imports.

---

140-144: Well-implemented optional dependency injection

Using @Autowired(required = false) is the correct approach for this optional extension point, making the PostSaveHook an optional component that won't break the application if not present.

---

284-286: Properly implemented hook invocation with null check

The hook invocation is correctly placed after successful page creation and history record creation, with an appropriate null check to prevent NullPointerExceptions.

---

378-380: Consistent hook implementation in updatePage method

The hook invocation follows the same pattern as in the createPage method, maintaining consistency across the codebase.

base/src/test/java/com/tinyengine/it/common/handler/MyMetaObjectHandlerTest.java (1)

39-39: Test updated to reflect reduced field-setting behavior

The verification has been updated from 8 to 5 calls to reflect the removal of automatic tenant-related field population in the insertFill method. This aligns with the database schema changes making tenant_id nullable.

app/src/main/resources/sql/mysql/update_all_tables_ddl.sql (1)

10-29:

✅ Verification successful

Consistent schema changes to make tenant_id nullable across all tables

These ALTER statements systematically modify the tenant_id column to allow NULL values across 20 tables, which is consistent with the code changes in MyMetaObjectHandler that no longer automatically populates tenant-related fields.

This change appears to be part of a deliberate architectural shift to support scenarios where entities are not necessarily tied to a tenant.

---

🏁 Script executed:

#!/bin/bash
# Verify that MyMetaObjectHandler class no longer sets tenant-related fields

# Check the MyMetaObjectHandler class implementation
rg -A 10 -B 5 "insertFill" base/src/main/java/com/tinyengine/it/common/handler/MyMetaObjectHandler.java

Length of output: 897

---

Schema update: tenant_id now nullable across all tables

• Verified that MyMetaObjectHandler.insertFill no longer sets tenantId (it only sets createdTime, lastUpdatedTime, createdBy, lastUpdatedBy, and platformId).
• The ALTER statements in app/src/main/resources/sql/mysql/update_all_tables_ddl.sql (lines 10–29) consistently modify the tenant_id column to allow NULL, matching the handler change.
• This supports the intended architectural shift to decouple entities from mandatory tenant assignment.

app/src/main/resources/sql/h2/update_all_tables_ddl.sql (2)

8-8: Allow NULL for publish_url in H2 migration
The change relaxes the publish_url column to accept NULL. Please verify that any application logic, validations, or reporting layers that consume this column handle NULL values gracefully (e.g., avoid unexpected NPEs or malformed URLs).

---

10-29: Make tenant_id columns nullable across H2 tables
This bulk modification drops NOT NULL on tenant_id for all listed tables. Note that H2’s handling of multi-column unique indexes with nullable columns may allow multiple rows with the same non-tenant keys when tenant_id IS NULL. Confirm that:

1. Your unique constraints still enforce the intended data integrity.
2. Downstream multi-tenancy filters (e.g., WHERE tenant_id = ?) behave correctly when tenant_id is NULL.
3. No existing metadata or code paths assume a non-null tenant_id.

app/src/main/resources/sql/h2/create_all_tables_ddl_v1.h2.sql (1)

25-669: Drop NOT NULL constraints on tenant-related columns (and related fields) in initial H2 DDL
This patch removes the NOT NULL attribute from tenant_id (and a few supporting columns like vscode_url) in every CREATE TABLE statement. Ensure that:

1. ORM mappings or manual inserts can supply NULL without errors.
2. The unique indexes involving tenant_id still enforce uniqueness as expected under H2’s NULL semantics.
3. The update migrations you applied earlier remain in sync with this initial schema.

app/src/main/resources/sql/mysql/create_all_tables_ddl_v1.mysql.sql (1)

25-678: Remove NOT NULL on tenant-related columns in MySQL initial DDL
Mirroring the H2 changes, this update makes tenant_id (and related columns) nullable in all MySQL CREATE TABLE statements. Please verify:

• Application code and JDBC/ORM layers handle nullable tenant IDs correctly.
• MySQL’s treatment of NULL in multi-column unique indexes aligns with your data-integrity requirements.
• Consistency between your initial schema and the MySQL migration scripts (update_all_tables_ddl.sql).

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