org.apache.tapestry.ioc.annotations
Annotation Type Inject

@Target(value={PARAMETER,FIELD})
@Retention(value=RUNTIME)
@Documented
public @interface Inject

This annotation serves two similar purposes: it marks parameters that should be injected in the IoC container, and it marks fields that should be injected inside Tapestry components.

In terms of the IoC container; normally, resources take precedence over annotations when injecting. The Inject annotation overrides this default, forcing the resolution of the parameters value via the master ObjectProvider, even when the parameter's type matches a type that is normally a resource. This is most often used in conjunction with Value annotation when injecting a string, as normally, the String would be matched as the service id.

In terms of the IoC container, the Inject annotation is only used on parameters to service builder methods and constructors. However, inside Tapestry components (and only inside components), it may be applied to fields. On fields that require injection, the Inject annotation is required.

See Also:

ObjectProvider