Re: [rules-users] null checking
samd wrote:
How do I evaluate null conditions in the following case for example?
seller: ( seller.cheese != null && seller.active == true )
cheese: ( cheese.type == "chedder" ) from seller.cheese
In the above example seller.cheese is null but seller is used in the
second part of the rule since we can't evaluate facts for null for some
reason how do you check for a null condition.
should be cheese: ( type == "chedder" ) from seller.cheese
anyways I tried doing this
(
seller: ( seller.cheese != null && seller.active == true )
cheese: ( cheese.type == "chedder" ) from seller.cheese
)
or
(
seller: ( seller.cheese = null && seller.active == true )
)
Which throws an error
I just need the correct syntax I guess heh
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