如果正则表达式不匹配，则抛出流口水验证

Question

        rule "doesnot match REGEX"
      when
           RuleActivator( targetMessage == "message" )
           $g: Parent(name matches "^[0-9]{4}[" "][A-Z]{2}[" "][0-9]{5}[" "]")
      then
           insert(new ValidationError(Validation($ROOT, $g, "name"), "SSDN"));
     end

目前这条规则在匹配正则表达式时会抛出错误。当此正则表达式不匹配时，我想抛出错误。那么，流口水有什么方法吗？还是有别的办法？

Answer 1

使用not matches:

The operator not matches:

The operator returns true if the String does not match the regular expression. The same rules apply as for the matches operator.

根据要求判断：

Position 1-4: numeric part of postal code - Position 5: blanc - Position 6-7: two uppercases (A2) - Position 8: blanc - Position 9-13: address (numeric, align to the left, to be filled up with spaces) - Position 14: blanc

您的正则表达式应如下所示：

^[0-9]{4}[ ][A-Z]{2}[ ][0-9]{5}[ ]

如果正则表达式不匹配，则抛出流口水验证

Throw drools validation if Regex doesn't match

regex

drools