org.apache.polygene.library.logging.trace

Class TraceConcern

java.lang.Object

org.apache.polygene.api.concern.ConcernOf<InvocationHandler>

org.apache.polygene.library.logging.trace.AbstractTraceConcern

org.apache.polygene.library.logging.trace.TraceConcern

All Implemented Interfaces:

InvocationHandler

@AppliesTo(value=Trace.class)
public final class TraceConcern
extends AbstractTraceConcern
implements InvocationHandler

The TraceConcern will call the traceEntry(), traceExit() and traceException() methods in the Tracer instance associated with the CompositeType that the TraceConcern is part of.

The Trace paradigm is all about tracking the entry and exit (both normal and exceptional ones) of methods. The TraceConcern will be added to all methods that declares the @Trace annotation, with an optional level argument. The level is the threshold of the Tracer instance required to trace the method, i.e. the priority of the Tracer instance must be equal or higher than the level set in the @Trace annotation of the method.

If the priority of the Tracer is set to OFF (Integer.MIN_VALUE) then no tracing will happen.

Field Summary

Fields inherited from class org.apache.polygene.library.logging.trace.AbstractTraceConcern

traceService

Fields inherited from class org.apache.polygene.api.concern.ConcernOf

next

Constructor Summary

Constructors

Constructor and Description
TraceConcern(Composite thisComposite)

Method Summary

Modifier and Type	Method and Description
protected boolean	doTrace()

Methods inherited from class org.apache.polygene.library.logging.trace.AbstractTraceConcern

invoke

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.reflect.InvocationHandler

invoke

Constructor Detail

TraceConcern

public TraceConcern(@This
                    Composite thisComposite)

Method Detail

doTrace

protected boolean doTrace()

Overrides:

doTrace in class AbstractTraceConcern