CODEWITHSUNDEEP
javahibernatelucenehibernate-search
simplfuzz
simplfuzz

Reputation: 12895

And operator in Hibernate (lucene) search

I am using the following code for search using hibernate-search. But this tokenizes the search query and does an OR search, whereas I want to do an AND search. How do I do that?

    FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(em);
    String searchQuery = "test query";

    QueryBuilder qb = fullTextEntityManager.getSearchFactory().buildQueryBuilder().forEntity(Customer.class).get();

    TermMatchingContext onFields = qb.keyword().onFields("customer.name","customer.shortDescription","customer.longDescription");

    org.apache.lucene.search.Query query = onFields.matching(searchQuery).createQuery();

    FullTextQuery persistenceQuery = fullTextEntityManager.createFullTextQuery(query, Customer.class);

    List<Customization> result = persistenceQuery.getResultList();

Upvotes: 2

Views: 3078

Answers (2)

Hardy
Hardy

Reputation: 19109

The OR logic is the default for Lucene. You can use a boolean DSL query as described here - http://docs.jboss.org/hibernate/stable/search/reference/en-US/html_single/#search-query-querydsl, however, that might not solve your problem yet, because you seem to have both query terms in a single string. Depending on your usecase (if for example the search string is provided by the user) it might be better to get the Lucene query from the Lucene query parser.

Upvotes: 3

simplfuzz
simplfuzz

Reputation: 12895

FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(em);
QueryBuilder qb = fullTextEntityManager.getSearchFactory().buildQueryBuilder().forEntity(Customer.class).get();
TermMatchingContext onFields = qb.keyword().onFields("customer.shortDescription",  "customer.longDescription");

BooleanJunction<BooleanJunction> bool = qb.bool();
org.apache.lucene.search.Query query = null;
String[] searchTerms = searchQuery.split("\\s+");
for (int j = 0; j < searchTerms.length; j++) {
   String currentTerm = searchTerms[j];
   bool.must(onFields.matching(currentTerm).createQuery());
}

query = bool.createQuery();

FullTextQuery persistenceQuery = fullTextEntityManager.createFullTextQuery(query, Customer.class);
resultList = persistenceQuery.getResultList();

Upvotes: 3

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