Hi all!
are there any limitations or implications on reusing a CWF?
In my app I'm doing the following:
Filter filter = new BooleanFilter(...)
// initialized with a couple of Term-, Range-, Boolean- and PrefixFilter
CachingWrapperFilter cwf = new CachingWrapperFilter( filter )
searcher.search( query, cwf ... ) // << here, the filter's docIdSet gets
cached, right?
// now I need to iterate over a list of categories and calculate the number
of goods in each of them
for( cat in categories ){
Filter catFilter = new BooleanFilter()
TermsFilter tf = new TermsFilter()
tf.addTerm new Term( 'category, cat )
catFilter.add new FilterClause( cwf, ... )
catFilter.add new FilterClause( tf, ... )
long freq = catFilter.getDocIdSet( indexReader ).cardinality()
//do stuff with freq
}
Is this a correct use? Shall the filter with a pre-cached bitSet be combined
with the new one inside the BooleanFilter like that?
Or maybe should I use searcher.search( query, filter, ... ).totalCount
instead of catFilter.getDocIdSet( indexReader ).cardinality()?
TIA
Konstantyn
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