PersistenceExceptionTranslator
| org.springframework.dao.support.PersistenceExceptionTranslator |
Class Overview
Interface implemented by Spring integrations with data access technologies that throw runtime exceptions, such as JPA, TopLink, JDO and Hibernate.
This allows consistent usage of combined exception translation functionality, without forcing a single translator to understand every single possible type of exception.
Summary
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Translate the given runtime exception thrown by a persistence framework to a
corresponding exception from Spring's generic DataAccessException hierarchy,
if possible.
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Public Methods
public abstract DataAccessException translateExceptionIfPossible (RuntimeException ex)
Translate the given runtime exception thrown by a persistence framework to a corresponding exception from Spring's generic DataAccessException hierarchy, if possible.
Do not translate exceptions that are not understand by this translator: for example, if coming from another persistence framework, or resulting from user code and unrelated to persistence.
Of particular importance is the correct translation to DataIntegrityViolationException, for example on constraint violation. Implementations may use Spring JDBC's sophisticated exception translation to provide further information in the event of SQLException as a root cause.
Parameters
| ex | a RuntimeException thrown |
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Returns
- the corresponding DataAccessException (or
nullif the exception could not be translated, as in this case it may result from user code rather than an actual persistence problem)