Streamline exception handling over all layers in the architecture

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Description

Sometimes an exception (e.h. Hibernate) comes up at the presentation layer. It would be better if lower layer exceptions are captured and translated into well-defined exception for the next layer. This neesd to be done in a consistenmt way through all layers in the architecture.

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Eric Jan Malotaux added a comment -

It is not easy to predict or analyse which exceptions can be expected. That is the drawback of using RuntimeExceptions by default.

This issue will be resolved/closed for now. When exceptions occur in practice, we will address them then.

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Eric Jan Malotaux added a comment - It is not easy to predict or analyse which exceptions can be expected. That is the drawback of using RuntimeExceptions by default. This issue will be resolved/closed for now. When exceptions occur in practice, we will address them then.
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Eric Jan Malotaux added a comment -

Validation errors resulting from rules in the business domain model are collected in a Errors object wrapped in a BusinessRuleException. Clients can catch this, retrieve the Errors object, analyze the errors and presumably show them to the user.

Other exceptions that may be caught by the presentation layer are mostly RuntimeExceptions that are caused by programming errors. For example, IllegalArgumentExceptions when a null-object is passed to a service method.

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Eric Jan Malotaux added a comment - Validation errors resulting from rules in the business domain model are collected in a Errors object wrapped in a BusinessRuleException. Clients can catch this, retrieve the Errors object, analyze the errors and presumably show them to the user. Other exceptions that may be caught by the presentation layer are mostly RuntimeExceptions that are caused by programming errors. For example, IllegalArgumentExceptions when a null-object is passed to a service method.

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  • Assignee:
    Eric Jan Malotaux
    Reporter:
    Jos Warmer
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