dynamic hibernate search lucenne query

mirak · **Joined:** Mon Apr 04, 2011 12:08 pm **Posts:** 32

Is it possible to build a query dynamically, adding clauses depending of you want to search on, the same way it can be done with hibernate criterias ?

like

Code:

org.apache.lucene.search.Query keyWordsQuery = qb.keyword()
                     .onField("title")
                     .matching(keyWord)
                     .createQuery();

org.apache.lucene.search.Query categoryQuery = qb.keyword()
                     .onField("category")
                     .equals(categoryId)
                     .createQuery();

final BooleanJunction<BooleanJunction> bool = qb.bool();

bool.must( keyWordsQuery  );
                  
if (StringUtils.isNotBlank(category)) {
   bool.must(categoryQuery);
}

final Query finalQuery = bool.createQuery();

sanne.grinovero · **Posted:** Thu Apr 21, 2011 2:30 pm

if course, using the dynamic DSL you can build queries dynamically.. but I don't understand what you're asking as you post an example already?

mirak · **Joined:** Mon Apr 04, 2011 12:08 pm **Posts:** 32

I wasn't sure of the behavior
I find the criteria query with .add( ... ) is a bit clearer about what it does

but it works, thanks

sanne.grinovero · **Posted:** Fri Apr 22, 2011 6:20 am

If you can suggest a patch to improve docs or javadoc, I'll be glad to apply it.

mirak · **Joined:** Mon Apr 04, 2011 12:08 pm **Posts:** 32

I used mostly this

http://docs.jboss.org/hibernate/stable/ ... query.html

I can't figure how to do things like " something and ( this or that ) and stuff in ( a,b,c,d ) "

mirak · **Joined:** Mon Apr 04, 2011 12:08 pm **Posts:** 32

so as far as i understand should is similar to logical "or" and must to a logical "and" ?

sanne.grinovero · **Posted:** Fri Apr 22, 2011 8:09 am

Quote:

so as far as i understand should is similar to logical "or" and must to a logical "and" ?

roughly, yes.
The 'or' is called "should" as there are some implications with score: the more terms it matches, the higher the score.