entity-class-conventions

entity-class-conventions is a cursor rule for coding agents from holtwood/awesome-cursorrules-zh. It costs 139 tokens per session, scanned A, original, MIT.

A set of rules for Java classes that represent database records, called entities. It defines required annotations, automatic ID creation, lazy relationship loading, and field validation.

In plain words
What is it for?
Use it when creating or changing Java persistence entities, IDs, relationships, and validation annotations with JPA and Lombok.
Why use it?
It keeps database mappings consistent and avoids loading related records until they are needed. It also standardizes basic checks such as valid email or non-empty values.

Cursor rule

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/holtwood/awesome-cursorrules-zh/entity-class-conventions
Clone the repo
git clone --depth 1 https://github.com/holtwood/awesome-cursorrules-zh

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for entity-class-conventions

README.md
[![agentmods](https://agentmods.dev/badge/rules/holtwood/awesome-cursorrules-zh/entity-class-conventions.svg)](https://agentmods.dev/rules/holtwood/awesome-cursorrules-zh/entity-class-conventions)
Your own site
<a href="https://agentmods.dev/rules/holtwood/awesome-cursorrules-zh/entity-class-conventions"><img src="https://agentmods.dev/badge/rules/holtwood/awesome-cursorrules-zh/entity-class-conventions.svg" alt="Measured on agentmods" height="20"></a>
Per session 139 This file is loaded in full into every session.
When invoked 139 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00139 $0.00139
Opus 5 $0.00069 $0.00069
Sonnet 5 $0.00028 $0.00028
Haiku 4.5 $0.00014 $0.00014

Measured 5d ago against content hash 02ec53f0b180, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

entity-class-conventions scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

docs/rules/backend/java/springboot-jpa/entity-class-conventions.mdc · 10 lines

What it actually says

  • 必须使用 @Entity 注解实体类。
  • 必须使用 @Data (来自 Lombok) 注解实体类,除非在提示中另有说明。
  • 必须使用 @Id 和 @GeneratedValue(strategy=GenerationType.IDENTITY) 注解实体 ID。
  • 必须对关系使用 FetchType.LAZY,除非在提示中另有说明。
  • 根据最佳实践正确注解实体属性,例如 @Size, @NotEmpty, @Email 等。
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 10 lines · 139 tokens per session scan A 02ec53f0b180

Subscribe to this mod's changes

entity-class-conventions is a cursor rule published in the GitHub repository holtwood/awesome-cursorrules-zh (232 stars, last pushed 1mo ago), licensed MIT. It adds 139 tokens to every session, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.