Torsten,
If the container is asserted in the working memory, just add it to
the rule:
rule "Item handling"
When
$item : Item(uniqueId)
$container: Container( values contains $item )
Then
if(mustBeDeleted($item)) {
retract($item);
$container.remove( $item );
} else {
doSomethingElse();
modify($item);
}
End
Otherwise, you can set the container as a global:
global my.package.Container container;
rule "Item handling"
When
$item : Item(uniqueId)
Then
if(mustBeDeleted($item)) {
retract($item);
container.remove( $item );
} else {
doSomethingElse();
modify($item);
}
End
You can access workingMemory through a special variable named
"drools", but for your case, I think best approach is one of the above.
[]s
Edson
Geise, Thorsten (ext) wrote:
Is it possible to access the working memory from within a rule or
function?
Example: I have two container objects that refer to another object
(item). Both container have this item in a list.
A rules decides to delete the item and therefore retracts it from the
working memory. But I need to delete the item from the two containers as
well. How to do?
rule "Item handling"
When
$item : Item(uniqueId)
Then
if(mustBeDeleted($item)) {
retract($item);
} else {
doSomethingElse();
modify($item);
}
End
Thanks,
Torsten.
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