-Re: Using matches in generate clause?
pablomar 2012-09-27, 17:34
no idea why, but matches works with FILTER but it doesn't with FOREACH
I've tried with pig 0.9.2
example (this works):
b = filter html_pages by html matches 'some pattern';
if you still want to do it with foreach, you can write your UDF, something
public class MyMatch extends EvalFunc <Boolean>
public Boolean exec(Tuple input) throws IOException
String pattern = (String)input.get(0);
String value = (String)input.get(1);
throw WrappedIOException.wrap("ouch!", e);
and use it just like this:
b = foreach html_pages generate portal_id, MyMatch('some pattern', html) as
On Thu, Sep 27, 2012 at 12:38 PM, Alan Gates <[EMAIL PROTECTED]> wrote:
> What version of Pig are you using?
> On Sep 27, 2012, at 8:54 AM, James Kebinger wrote:
> > Hello, I'm having some trouble doing something I thought would be easy:
> > like to use matches to generate a boolean flag but this seems to not
> > compile:
> > FOREACH html_pages GENERATE portal_id, html matches 'some pattern' as
> > wp_match:boolean;
> > I've tried wrapping it in parens too, with no luck.
> > Is this possible, or am I out of luck?
> > thanks