java 业务规则验证的框架/设计模式
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Framework / Design pattern for business rule validation
提问by ilovetolearn
What kind of framework / design pattern should I use for application which possibly has 1000 over biz rule validations?
对于可能有 1000 多个商业规则验证的应用程序，我应该使用什么样的框架/设计模式？
The type of systems I am working on consist of lots of input forms which allow users to enter. Each input form has different sections.
我正在研究的系统类型由许多允许用户输入的输入表单组成。每个输入表单都有不同的部分。
i.e. Form A has Section A/B/C/D. Form B has section B/C/D
即表格 A 有 A/B/C/D 部分。表格 B 有 B/C/D 部分
Some of these biz rule validation are common to both forms, I am looking at a approach to reuse the rules as well.
其中一些商业规则验证对两种形式都是通用的，我也在寻找一种重用规则的方法。
How do I build a robust business rule validation framework?
如何构建健壮的业务规则验证框架？
回答by Tomasz Nurkiewicz
droolsframework is specifically designed to evaluate business rules
springframework allows writing beans using dynamic languages like groovyand jruby. You can easily plug JavaScript
strategy design patternseems like a good fit: implement each rule as a separate strategy and run them one after another.
similar chain of responsibilitypattern can be used: each rule either fails or succeeds and passes control to next rule
回答by Jord?o
A good pattern to implement business rules is the Specification pattern. It's a combination of Strategy, Compositeand Interpreterthat can make for parameterized and easily combinable rules. Be sure to also look at the original paper (pdf)by Fowler and Evans, and take a look at the book Domain Driven Designif you can.
实现业务规则的一个很好的模式是规范模式。它是Strategy、Composite和Interpreter的组合，可以制定参数化和易于组合的规则。一定还要看看Fowler 和 Evans的原始论文 (pdf)，如果可以的话，看看《领域驱动设计》这本书。
