✨AI Column: Create cache mechanism

[Raushen]

No description provided.

[Copilot]

Pull Request Overview

This PR implements caching functionality for AI column data in the DevExtreme grid. The changes transform stub methods in the AIColumnCacheController into a working in-memory cache implementation using nested Map structures.

Key changes:

• Implemented cache storage using Map<string, Map<PropertyKey, string>> to store AI column responses
• Added cache persistence after successful AI column requests
• Connected cache operations to the controller methods for retrieval and clearing

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
m_ai_column_cache_controller.ts	Implemented in-memory cache with Map-based storage and full CRUD operations
m_ai_column_integration_controller.ts	Added cache persistence after receiving AI responses and exposed cache retrieval/clearing methods
m_ai_column_controller.ts	Updated parameter type from any to unknown and delegated cache operations to integration controller

Comments suppressed due to low confidence (2)

packages/devextreme/js/__internal/grids/grid_core/ai_column/m_ai_column_integration_controller.ts:200

• The dispose method doesn't dispose of the aiColumnCacheController instance. Since aiColumnCacheController has its own dispose method that clears the cache, it should be called here to prevent memory leaks: this.aiColumnCacheController.dispose();

  public dispose(): void {
    super.dispose();
    Object.keys(this.aborts).forEach((columnName) => this.abortRequest(columnName));
  }

packages/devextreme/js/__internal/grids/grid_core/ai_column/m_ai_column_controller.ts:110

• The dispose method doesn't dispose of the aiColumnIntegrationController instance. This should call this.aiColumnIntegrationController.dispose(); to properly clean up resources and prevent memory leaks.

  public dispose(): void {
    this.dataController.changed.remove(this.dataChangedHandler);
  }

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

[Copilot]

Pull Request Overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated no new comments.

[Copilot]

Pull Request Overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 5 comments.

[Copilot]

[nitpick] The variable declaration and initialization could be simplified. Consider declaring cachedResponse inside the if block or using a more explicit initialization pattern. The current approach initializes an empty object that gets immediately reassigned when args.useCache is true.

Suggested change

	let cachedResponse: Record<PropertyKey, string> = {};
	if (args.useCache) {
	const keys = data.map((item) => item[keyField] as PropertyKey);
	cachedResponse = this.aiColumnCacheController.getCachedResponse(columnName, keys);
	}
	const cachedResponse: Record<PropertyKey, string> = args.useCache
	? this.aiColumnCacheController.getCachedResponse(
	columnName,
	data.map((item) => item[keyField] as PropertyKey),
	)
	: {};

[Copilot]

Inconsistent handling of empty string values. In getCachedResponse, empty strings are filtered out during retrieval (line 16), but in setCachedResponse, they're prevented from being stored. This dual filtering is redundant and could mask issues. Consider standardizing to handle empty strings in one location only.

[Copilot]

The super.dispose() call should typically come after cleaning up the component's own resources, not before. This ensures that if the parent's dispose method has any dependencies on the current state, they're still available. Consider moving super.dispose() to the end of the method.

Suggested change

	super.dispose();
	if (this.aiColumnOptionChangedHandler) {
	this.columnsController.aiColumnOptionChanged.remove(this.aiColumnOptionChangedHandler);
	}
	if (this.dataChangedHandler) {
	this.dataController.changed.remove(this.dataChangedHandler);
	}
	if (this.aiColumnOptionChangedHandler) {
	this.columnsController.aiColumnOptionChanged.remove(this.aiColumnOptionChangedHandler);
	}
	if (this.dataChangedHandler) {
	this.dataController.changed.remove(this.dataChangedHandler);
	}
	super.dispose();

[Copilot]

Similar to AIColumnController, the super.dispose() call should typically come after cleaning up component-specific resources. Consider moving super.dispose() to the end of the dispose method.

Suggested change

	super.dispose();
	if (this.aiColumnOptionChangedHandler) {
	this.columnsController.aiColumnOptionChanged.remove(this.aiColumnOptionChangedHandler);
	}
	if (this.aiColumnOptionChangedHandler) {
	this.columnsController.aiColumnOptionChanged.remove(this.aiColumnOptionChangedHandler);
	}
	super.dispose();

[Alyar666]

It's not necessary to remove this method from the callback list. This is done at the base level.