lucene - Solr/Solrj: How can I determine the total number of documents in an index?

Question

How can I determine the total number of documents in a Solr index using Solrj?

After hours of searching on my own, I actually have an answer (given below); I'm only posting this question so others can find the solution more easily.

question from:https://stackoverflow.com/questions/5050746/solr-solrj-how-can-i-determine-the-total-number-of-documents-in-an-index

Answer 1

Here's what I'm using. Is this canonical? Is there a better way?

    SolrQuery q = new SolrQuery("*:*");
    q.setRows(0);  // don't actually request any data
    return server.query(q).getResults().getNumFound();