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Posted to dev@nifi.apache.org by gregw134 <gw...@hortonworks.com> on 2016/07/07 22:44:03 UTC
GetFile Regex issue
Hi,
The default file filter for GetFile is [^\.].* which only matches filenames
one character long. It should probably be changed to something like [^\.]*.*
Let me know if this is the wrong forum to post this.
Thanks,
Greg Womack
Solutions Engineer
Hortonworks
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Re: GetFile Regex issue
Posted by gregw134 <gw...@hortonworks.com>.
Hi Joe,
The mailing list you mentioned got filtered out. Can you repeat it without the @?
I couldn’t get it to work until I changed the regex to [^\.]*.*
I think the issue is [^\.] means any character, except ., exactly once. You can see this on regex101 (dot com).
If this is an issue, it also shows up in the ListFile processor.
Thanks,
Greg
From: "Joe Witt [via Apache NiFi Developer List]"
Date: Thursday, July 7, 2016 at 3:51 PM
To: default
Subject: Re: GetFile Regex issue
Greg,
[hidden email]</user/SendEmail.jtp?type=node&node=12711&i=0> is probably better but this is just fine.
My regex foo gets weaker by the day. But I believe the regex says
"avoid things that start with '.' but accept anything else".
Looking here https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html
The [^ starts a character class as a negation of those characters.
And the .* says any character (typically excluding newlines) and any
number of them 0 or more.
Have you verified that it is not working?
Thanks
Joe
On Thu, Jul 7, 2016 at 3:44 PM, gregw134 <[hidden email]</user/SendEmail.jtp?type=node&node=12711&i=1>> wrote:
> Hi,
>
> The default file filter for GetFile is [^\.].* which only matches filenames
> one character long. It should probably be changed to something like [^\.]*.*
>
> Let me know if this is the wrong forum to post this.
>
> Thanks,
>
> Greg Womack
> Solutions Engineer
> Hortonworks
>
>
>
> --
> View this message in context: http://apache-nifi-developer-list.39713.n7.nabble.com/GetFile-Regex-issue-tp12710.html
> Sent from the Apache NiFi Developer List mailing list archive at Nabble.com.
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Re: GetFile Regex issue
Posted by gregw134 <gw...@hortonworks.com>.
Hi Joe,
Nevermind, I realized my mistake. The regex is fine.
Greg
From: "Joe Witt [via Apache NiFi Developer List]"
Date: Thursday, July 7, 2016 at 3:51 PM
To: default
Subject: Re: GetFile Regex issue
Greg,
[hidden email]</user/SendEmail.jtp?type=node&node=12711&i=0> is probably better but this is just fine.
My regex foo gets weaker by the day. But I believe the regex says
"avoid things that start with '.' but accept anything else".
Looking here https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html
The [^ starts a character class as a negation of those characters.
And the .* says any character (typically excluding newlines) and any
number of them 0 or more.
Have you verified that it is not working?
Thanks
Joe
On Thu, Jul 7, 2016 at 3:44 PM, gregw134 <[hidden email]</user/SendEmail.jtp?type=node&node=12711&i=1>> wrote:
> Hi,
>
> The default file filter for GetFile is [^\.].* which only matches filenames
> one character long. It should probably be changed to something like [^\.]*.*
>
> Let me know if this is the wrong forum to post this.
>
> Thanks,
>
> Greg Womack
> Solutions Engineer
> Hortonworks
>
>
>
> --
> View this message in context: http://apache-nifi-developer-list.39713.n7.nabble.com/GetFile-Regex-issue-tp12710.html
> Sent from the Apache NiFi Developer List mailing list archive at Nabble.com.
________________________________
If you reply to this email, your message will be added to the discussion below:
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Re: GetFile Regex issue
Posted by Joe Witt <jo...@gmail.com>.
Greg,
users@nifi.apache.org is probably better but this is just fine.
My regex foo gets weaker by the day. But I believe the regex says
"avoid things that start with '.' but accept anything else".
Looking here https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html
The [^ starts a character class as a negation of those characters.
And the .* says any character (typically excluding newlines) and any
number of them 0 or more.
Have you verified that it is not working?
Thanks
Joe
On Thu, Jul 7, 2016 at 3:44 PM, gregw134 <gw...@hortonworks.com> wrote:
> Hi,
>
> The default file filter for GetFile is [^\.].* which only matches filenames
> one character long. It should probably be changed to something like [^\.]*.*
>
> Let me know if this is the wrong forum to post this.
>
> Thanks,
>
> Greg Womack
> Solutions Engineer
> Hortonworks
>
>
>
> --
> View this message in context: http://apache-nifi-developer-list.39713.n7.nabble.com/GetFile-Regex-issue-tp12710.html
> Sent from the Apache NiFi Developer List mailing list archive at Nabble.com.