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javaregexspringspring-bootjpa

Negation not working in JPA Pattern Validator

I want to blacklist a few words and blank. But negation is not working in JPA Pattern Validator regex.

@Pattern(regexp = "^(?!(|null|na))$", message = "Invalid/Empty input")

EDIT: Looks like none of the flags working. Is it expected or am I doing something wrong?

Solution

  • I might be a bit late to the party yet to prevent others to struggle like I did, in my case I wanted to avoid certain suffixes, lets say -INVALID and -UNDESIRED, the pattern that help me with it was:

    @Pattern(
            regexp = "^.+?(?<!-INVALID)(?<!-UNDESIRED)$",
            message = "Invalid suffix [-INVALID, -UNDESIRED]")