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OPERATOR({port=RelationalPredicte('1<1234')}, …)
(This example uses the RelationalPredicate, which also can be replaced by other predicates.)
- List:It is also possible to pass a list of values. For that, the values have to be surrounded with squared brackets:
OPERATOR({color=['green', 'red', 'blue']}, …)
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(Type of elements: integer, double, string, predicate, list, map).
- Map:
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- This one allows maps like the HashMap in Java. Thus, one parameter can have a list of key-value pairs, where the key and the value are one of the described type. So, you can use this
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- , to define a set of pairs where the key and the value are strings using the "=" for separating the key from the value:
OPERATOR({def=['left'='green', 'right'='blue']}, …)
It is also possible that values are lists:
OPERATOR({def=['left'=['green','red'],'right'=['blue']]}, …)
Remember, although the key can be another data type than the value, all keys must have the same data type and all values must have the same data type
Notice, that all parameters and their types (string or integer or list or…) are defined by their operator. Therefore, maybe it is not guaranteed that the same parameters of different operators use the same parameter declaration – although we aim to uniform all parameters.
Ports – What if the Operator Has More Than One Output?
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