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As alternative there is an add-on for Spring 3 and the BV integration (= ExtVal validation module) to allow typesafe dependency injection in constraint validators.

Mapped Constraint Source

The concept is similar to @JoinValidation (provided by the property-validation module. However, this version is more type-save and it is supported by the property- as well as the bean-validation module.

Since both modules support the same syntax you will find further information here.