Can this skill help with Many-to-Many relationships?

Yes, it provides patterns for both auto-generated intermediate tables and explicit intermediate classes for scenarios where extra fields are required on the relationship.

Why shouldn't I use auto-properties in XPO classes?

Standard C# auto-properties break XPO's change tracking. This skill enforces the use of SetPropertyValue with backing fields to ensure UI and database synchronization.

What is the recommended base class for new XAF projects?

The skill recommends using BaseObject from DevExpress.Persistent.BaseImpl for most new XPO entities because it includes a Guid primary key and supports deferred deletion by default.

How does this skill handle calculated fields?

It utilizes the [PersistentAlias] attribute to define server-side expressions that are filterable and sortable at the database level, rather than just in-memory.

DevExpress XAF XPO Modeling

Name: DevExpress XAF XPO Modeling
Author: kashiash

bykashiash

•

データベース管理

Simplifies the creation and management of DevExpress XAF persistent object models using XPO ORM best practices.

This skill provides expert guidance for architecting business models within the DevExpress eXpressApp Framework (XAF) using the eXpress Persistent Objects (XPO) ORM. It streamlines the implementation of complex data structures, including inheritance strategies, property change tracking, and server-side calculated fields. By providing patterns for lifecycle hooks and session management, it helps developers avoid common pitfalls like cross-session leaks and infinite recursion in saving events, ensuring a robust and performant data layer for enterprise .NET applications.

主な機能

01Optimizes database mapping with specialized XPO attributes and indexes

022 GitHub stars

03Implements complex One-to-Many, Many-to-Many, and One-to-One relations

04Enforces best practices for Session management and Lifecycle hooks

05Configures server-side calculated properties using PersistentAlias

06Standardizes XPO base class selection including BaseObject and XPObject

ユースケース

01Designing a new domain model for a DevExpress XAF enterprise application

02Migrating legacy database schemas to XPO persistent objects with custom keys

03Refactoring business logic into server-side calculated aliases for better performance

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kashiash/xaf-skills xaf-xpo-models

For use in Claude.ai and ChatGPT