2009/4/10 Matthew Hall :
> I think I would tackle this in a slightly different manner.
>
> When you are creating this index, make sure that that field has a
> default value. Make sure this value is something that could never appear
> in the index otherwise. Then, when you goto place this field into
I think I would tackle this in a slightly different manner.
When you are creating this index, make sure that that field has a
default value. Make sure this value is something that could never appear
in the index otherwise. Then, when you goto place this field into the
index, either write out your
searching for fieldname:* will be *extremely* expensive as it will, by
default,
build a giant OR clause consisting of every term in the field. You'll throw
MaxClauses exceptions right and left. I'd follow Tim's thread lead first
Best
Erick
2009/4/8 王巍巍
> first you should change your querypa
first you should change your querypaser to accept wildcard query by calling
method of QueryParser
setAllowLeadingWildcard
then you can query like this: fieldname:*
2009/4/9 Tim Williams
> On Wed, Apr 8, 2009 at 11:45 AM, addman wrote:
> >
> > Hi,
> > Is it possible to create a quer
On Wed, Apr 8, 2009 at 11:45 AM, addman wrote:
>
> Hi,
> Is it possible to create a query to search a field for any value? I just
> need to know if the optional field contain any data at all.
google for: lucene field existence
There's no way built in, one strategy[1] is to have a 'meta field
