25 lines
807 B
Markdown
25 lines
807 B
Markdown
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# ddd-validation
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## Status
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to be discussed
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## Context
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We want express validity on domain objects. Clear described validity helps on
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* avoid many redundant and unnecessary (null-)checks spread around in the code
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* collects all validity constraints to one defined place
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### Principles affected
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* Check the domain borders
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* Do not tie validation to object creation / serialization
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* propagate validation through aggregates
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### see also:
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* [Fowler] Do not use exceptions for validation: https://martinfowler.com/articles/replaceThrowWithNotification.html
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* [Fowler] Contextual Validation: https://martinfowler.com/bliki/ContextualValidation.html
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* [Vladimir Khorikov] Some ideas for validation in DDD: https://enterprisecraftsmanship.com/posts/validation-and-ddd/
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