Hi Rick, If you are putting these into a field like “Filename Filter” in the GetFile processor, it is not expecting NiFi Expression Language but a Java regular expression. To accomplish this, use a string like the following (before the <— indicating an explanation):
^e510.* <— Must start with ‘e510’ then allows any number of subsequent characters .*e510.* <— Allows any string containing ‘e510’ ^e510.*\.xml <— Accepts any file that starts with ‘e510’ and ends with ‘.xml’ For more information, you can read about how Java parses regular expressions here [1]. If you are attempting to do an Expression Language evaluation, ensure the property you are using is marked “Supports Expression Language: True (Scope: Attributes)” in the docs (or mouse over the small “?” icon). [1] https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html Andy LoPresto [email protected] [email protected] PGP Fingerprint: 70EC B3E5 98A6 5A3F D3C4 BACE 3C6E F65B 2F7D EF69 > On Mar 12, 2019, at 3:23 PM, Rick Medlin <[email protected]> wrote: > > Hi, > > I'm trying to filter for a particular file name and I've tried both of these > expressions. The file name begins with e510: > > ${filename:contains('e510')} > ${filename:startsWith('e510')} > > Both of them return errors saying that they are not valid Java Regular > Expressions. I'm new to Nifi so I don't know if something is off in our > environment or not. Any assistance would be appreciated. > > Rick Medlin > Software Engineer IV > > 858-790-6495 office > > > > > [email protected]<mailto:[email protected]> > www.medimpact.com<http://www.medimpact.com/> > > MedImpact Healthcare Systems, Inc. > 10181 Scripps Gateway Ct. > San Diego, CA 92131 > > > > > > --------------------------------------------------------------------- > This transmission, together with any attachments, is intended only for the > use of those to whom it is addressed and may contain information that is > privileged, confidential, and exempt from disclosure under applicable law > and/or may contain confidential individually identifiable health information > protected under the Health Insurance Portability and Accountability Act of > 1996 ("HIPAA") and other statutes. If you are not the intended recipient, you > are hereby notified that any distribution or copying of this transmission is > strictly prohibited. If you received this transmission in error, please > notify the original sender immediately and delete this message, along with > any attachments, from your computer. > --------------------------------------------------------------------- >
