@Documented @Retention(RetentionPolicy.SOURCE) @Target({ElementType.TYPE}) @GroovyASTTransformationClass("org.codehaus.groovy.transform.LogASTTransformation") 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.
| Type | Name and Description |
|---|---|
String |
category
|
Class<? extends LogASTTransformation.LoggingStrategy> |
loggingStrategy
|
String |
value
|
String |
visibilityIdIf specified, must match the "id" attribute in a VisibilityOptions annotation to enable a custom visibility. |
If specified, must match the "id" attribute in a VisibilityOptions annotation to enable a custom visibility.