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The advanced user might decide to alter the provided AOP descritor.
In order to do this, it is important to understand the reaons behind what
is provided, and what is required by POJO Cache. Previous sections have
mentioned that any class with the @Replicable
annotation will be instrumented. This happens, because the provided AOP
descriptor, pojocache-aop.xml
, has a perpare statement
which matches any class (or subclass) using the annotation. This is shown
in the following snippet:
<prepare expr="field(* $instanceof{@org.jboss.cache.pojo.annotation.Replicable}->*)"/>
More specifically, any code which accesses a field on a class which
has been annotated with @Replicable
, will be
instrumented: The "field" pointcut in the expression matches both read and
write operations. The wildcard "*" indicates that all java protection
modes are intercepted (private, package, protected, public). The
$instanceof
expression refers to any annotation that
subclasses @Replicable
. Finally, the ending wildcard
allows the matched field to have any name.