apoc.util.validatePredicate
Function
apoc.util.validatePredicate(predicate Boolean, message String, params [Any])
- if the given predicate is true an exception is thrown, otherwise it returns true (for use inside WHERE
subclauses).
Signature
apoc.util.validatePredicate(predicate :: BOOLEAN?, message :: STRING?, params :: LIST? OF ANY?) :: (BOOLEAN?)
Input parameters
Name | Type | Default |
---|---|---|
predicate |
BOOLEAN? |
null |
message |
STRING? |
null |
params |
LIST? OF ANY? |
null |
Usage Examples
The following throws an exception because the predicate is true:
MATCH (a)
WHERE apoc.util.validatePredicate(true,'message %d',[42])
RETURN a
Failed to invoke procedure |
The following returns true because the predicate is false:
RETURN apoc.util.validatePredicate(false,'message %d',[42]) AS result
result |
---|
true |
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