Groovy regex for any string between two fields

Question

I am using groovy regex: notification.ietf-restconf:notification.my-pma-device-notification:device-notification.device-notification.notification.~/.[A-Za-z]$/.entity-ref* for any string between notification and entity-ref but its not working.

What should be the regex for any string to exist between these two fields (groovy)?

Answer 1

There are a few 'notification's in the string, assuming you mean the final one 'device-notification.notification'?

The following will capture at least one character between the strings.

def str = '''device-notification.device-notification.notification.CONTAINER-NAME.entity-ref'''  

def group = ( str =~ /(?<=device-notification\.notification\.)(.+)(?=\.entity-ref)/ ) 

assert 1 == group.count
assert 'CONTAINER-NAME' == group[0][0]​