how to get all the docIds in the search result?

[shb]

When I use
          SolrQuery query = new SolrQuery();
           query.set("q", "issn:0002-9505");
           query.setRows(10);
           QueryResponse response = server.query(query);
I only can get the 10 ids in the response.

How can i get all the docIds  in the search result?  Thanks.