turcsanyip commented on a change in pull request #3966: NIFI-6992 - Add "Batch
Size" property to GetHDFSFileInfo processor
URL: https://github.com/apache/nifi/pull/3966#discussion_r365193100
##########
File path:
nifi-commons/nifi-utils/src/main/java/org/apache/nifi/processor/util/StandardValidators.java
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@@ -507,6 +507,20 @@ public ValidationResult validate(final String subject,
final String input, final
// FACTORY METHODS FOR VALIDATORS
//
//
+ public static Validator createAllowEmptyValidator(Validator delegate) {
+ return (subject, input, context) -> {
+ ValidationResult validationResult;
+
+ if (input == null || input.equals("")) {
Review comment:
isEmpty() method of this class could be used.
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