I have a situation where I have a series of terms queries as part of a
BooleanQuery.
example:
term: 'sole type' -> leather
BooleanClause.SHOULD_OCCURR
term: 'title' -> 'Men's Golf shoes'
BooleanClause.SHOULD_OCCURR
...
But, some terms are incredibly powerful indicators of match
term: 'band type' -> 'gold'
Normally, I would set this as a field boost in the query. Problem is, it
isn't producing ANY changes even when I set the boost score absurdly high. I
have also tried to set the BooleanClause.MUST on my really important term
and I get no results at all.
I tried a simple TermQuery for that (no clause) and got no results. Below is
a code snippet. I checked through the recent archives discussing field
boosts and I am pretty confident I am doing it right. So, now I am presuming
it's a problem with my query.
private Query buildQuery(Map<String, String> CatalogInfo) {
if (CatalogInfo != null && CatalogInfo.size() > 0) {
BooleanQuery booleanQuery = new BooleanQuery();
for (Map.Entry<String, String> attributeValue :
CatalogInfo.entrySet()) {
String attributeName = attributeValue.getKey();
String[] attributeValues;
if (attributeValue.getValue().indexOf(VALUES_DELIMITER) ==
-1) {
attributeValues = new String[]
{attributeValue.getValue()};
} else {
attributeValues =
attributeValue.getValue().split(VALUES_DELIMITER);
}
for (String attributeValue : attributeValues) {
String escapedValue =
QueryParser.escape(attributeValue).trim();
TermQuery termQuery = new TermQuery(new
Term(attributeName, escapedValue));
Float boostNumber = _boostMap.get(attributeName); //
this is where 'band type' gets it's boost
if (boostNumber != null) {
LOG.warn("Boost value found: " + boostNumber);
termQuery.setBoost(boostNumber);
}
booleanQuery.add(termQuery, BooleanClause.Occur.SHOULD);
}
}
LOG.warn("Boolean query: " + booleanQuery.toString());
return booleanQuery;
}
return null;
}
--
Christian Bongiorno
