Interface ParamConverter<T>

By default, when used for injection of parameter values, a selected ParamConverter instance MUST be used eagerly by a JAX-RS runtime to convert any default value in the resource or provider model, that is during the application deployment, before any value – default or otherwise – is actually required. This conversion strategy ensures that any errors in the default values are reported as early as possible. This default behavior may be overridden by annotating the ParamConverter implementation class with a @Lazy annotation. In such case any default value conversion delegated to the @Lazy-annotated converter will be deferred to a latest possible moment (i.e. until the injection of such default value is required).

NOTE: A service implementing this contract is not recognized as a registrable JAX-RS extension provider. Instead, a ParamConverterProvider instance responsible for providing ParamConverter instances has to be registered as one of the JAX-RS extension providers.