custom-message-interpolation

Custom message interpolation

it is possible to plug in a custom MessageInterpolator implementation.

• Custom interpolators must implement the interface jakarta.validation.MessageInterpolator
• implementations must be thread-safe
• it is recommended that custom message interpolators delegate final implementation to the default interpolator, which can be obtained via Configuration#getDefaultMessageInterpolator()
• to use a custom message interpolator it must be registered either by configuring it in the Jakarta Validation XML descriptor META-INF/validation.xml or by passing it when bootstrapping a ValidatorFactory or Validator

ResourceBundleLocator

want to retrieve error messages from other resource bundles than ValidationMessages

in this situation Hibernate Validator’s ResourceBundleLocator SPI can help.

SPI: Service Provider Interface

• the default message interpolator in Hibernate Validator is ResourceBundleMessageInterpolator
• using an alternative bundle only requires passing an instance of PlatformResourceBundleLocator with the bundle name when bootstrapping the ValidatorFactory
• you can implement a completely different ResourceBundleLocator