Package groovy.util.logging

Annotation Type Log4j

  • @Documented
@Retention(SOURCE)
@Target(TYPE)
public @interface Log4j
    This local transform adds a logging ability to your program using Log4j logging. Every method call on a unbound variable named log will be mapped to a call to the logger. For this a log field will be inserted in the class. If the field already exists the usage of this transform will cause a compilation error. The method name will be used to determine what to call on the logger. 
     log.name(exp)
    is mapped to 
     if (log.isNameEnabled() {
    log.name(exp)
 }
    Here name is a place holder for info, debug, warning, error, etc. If the expression exp is a constant or only a variable access the method call will not be transformed. But this will still cause a call on the injected logger.
    Since:
    1.8.0

    • Element Detail

      • value

        String value
        Default:
        "log"

      • category

        String category
        Default:
        "##default-category-name##"

      • visibilityId

        String visibilityId
        If specified, must match the "id" attribute in a VisibilityOptions annotation to enable a custom visibility.
        Since:
        3.0.0
        Default:
        "<DummyUndefinedMarkerString-DoNotUse>"