org.glassfish.pfl.tf.spi.annotation
Annotation Type TFEnhanced

@Documented
@Target(value=TYPE)
@Retention(value=RUNTIME)
public @interface TFEnhanced

Indicates that a class has already been enhanced for tracing. There are currently two stages, and a class may be enhanced to either stage=1 or stage=2. stage=1 means that all class-schema changes have taken place, and the static initializer has been modified to register with the tracing facility, but none of the traceable methods have been modified. stage=2 includes all stage 1 changes, plus all tracing code has been added.

The reason for 2 stages is that stage 1 must be done at build time, while stage 2 can be done either at build time, or dynmically, for example in a ClassFileTransformer. It is extremely helpful if EnhanceTool knows whether a class has already been enhanced, so it can avoid making a mess by enhancing a class multiple times. This is also necessary for incremental enhancement when a project is recompiled: only those classes that have been recompiled will be enhanced again.

Author:

ken

Required Element Summary

TraceEnhanceLevel

stage

Element Detail

stage

public abstract TraceEnhanceLevel stage