Xapian discuss - May 2009 - Need some help with spelling suggestions

Hi,

I have trouble getting the spelling suggestion feature to work when I 
use multiple search terms.

If I use:

$qp->set_default_op(XapianQueryParser::FLAG_LOVEHATE);
$query = $qp->parse_query($queryString)

It works fine when I search for e.g. 'hello world'

However, changing this to:

$qp->set_default_op(XapianQueryParser::FLAG_LOVEHATE | 
XapianQueryParser::FLAG_SPELLING_CORRECTION);
       $query = $qp->parse_query($queryString)

I now end up with the following error:

[17-May-2009 11:57:50] PHP Fatal error:  Uncaught exception 'Exception' 
with message 'InvalidOperationError: get_min_subqs called with invalid 
operator type' in /Applications/MAMP/bin/php5/lib/php/xapian.php:1408
Stack trace:
#0 /Applications/MAMP/bin/php5/lib/php/xapian.php(1408): 
queryparser_parse_query(Resource id #132, 'hello world')


Am I doing something wrong, or is spelling correction not supported for 
queries that have multiple terms?

Greetings,
Ivo

On Sun, May 17, 2009 at 12:09:31PM +0200, Ivo Jansch - Ibuildings
wrote:
> $qp->set_default_op(XapianQueryParser::FLAG_LOVEHATE | 
> XapianQueryParser::FLAG_SPELLING_CORRECTION);
>        $query = $qp->parse_query($queryString)
set_default_op() takes an "OP", not a combination of "FLAGs"
- e.g.
XapianQuery::OP_AND - so you're setting a totally bogus value for the
default op here.  With just FLAG_LOVEHATE you happen to set a valid
op value so you don't get an exception, but you won't get the behaviour
you expect.

The correct code for this is:

  $query = $qp->parse_query($queryString, XapianQueryParser::FLAG_LOVEHATE |
XapianQueryParser::FLAG_SPELLING_CORRECTION);

The error which is reported could be better - I'll take a look at that.

Cheers,
    Olly