问题
I have a lookup table called BlockCustomer. I also have an FTP Adapter that picks up files from multiple customers. I need to be able to determine the customer from the source of the file and do a lookup on the table. If BlockCustomer.Customer1 = 0 then it will send it to it's target, otherwise it will do nothing.
If I could use javascript I would do something like this:
WHEN Lookup(BlockCustomer,HL7.Source.split("/incoming/")[1].split("/")[0]),1) = 0
But obviously I can't. I found $ZSTRIP but I'm not sure if or how it will work. Is this possible or am I going to have to create a custom class?
回答1:
In Cache we use function $piece if needs to get some parts of string by delimiter. For rule you could use the same function called Piece, with the same arguments. So you conditions should looks like:
Lookup(BlockCustomer,Piece(HL7.Source,"/incoming/",2),1)=0
By the way if you think, that you need some specific functions for you, you can do it by developing it. Just extend the class Ens.Rule.FunctionSet and add a method. And function will appear with the same name. As an example you can see at Ens.Util.FunctionSet class, which contains almost all available functions.
来源：https://stackoverflow.com/questions/34801140/trouble-with-complex-routing-rule