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Re: [aspectj-users] declare parents with delegate
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Santi Villalba wrote:
Yes, that is the challenge, generate the methods when needed by
delegating them to the delegate member.
Hello,
sorry, if I misunderstood or didn't get the point. But
why can't you do something of this sort:
pointcut proxyCall(Object myTarget)
: call(* MyTarget.*(..))
&& target(myTarget)
&& within(my.special.rootpackage..*);
Object around(Object myTarget)
: proxyCall(myTarget) {
Object realTarget =
this.getTarget(myTarget);
try {
Object val=proceed(realTarget);
return val;
}
catch(Throwable T) {
// do something if necessary
// maybe package it into a Runtime Exception
}
}
private Object getTarget(Object myTarget) {
return ServiceLocator.getServiceObject(myTarget.getClass());
// or something similar
}
Guntis Ozols wrote:
Is there a shortcut for something like this:
class DatabaseMetaDataWrapper implements DatabaseMetaData {
private DatabaseMetaData delegate;
// constructor, some implemented methods here
//===================== DELEGATE METHODS =====================
public boolean allProceduresAreCallable() throws SQLException {
return delegate.allProceduresAreCallable();
}
public boolean allTablesAreSelectable() throws SQLException {
return delegate.allTablesAreSelectable();
}
// And so on and so on...
// Problem #1: more than 500 useless lines
// Problem #2: depends on java version!
// Also want to advice some of the methods
}
--
Best regards,
Hermann Vosseler
---------------------------------------------------------------
Hermann Voßeler
Baader Wertpapierhandelsbank AG / IT
Weihenstephaner Straße 4
D-85716 Unterschleißheim
eMail: hermann.vosseler@xxxxxxxxxxxxx
Internet: www.baaderbank.de
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