Examples with QuerySpecification org.qi4j.api.query.grammar.QuerySpecification used on opensource projects

Example 1 with QuerySpecification

use of org.qi4j.api.query.grammar.QuerySpecification in project qi4j-sdk by Qi4j.

the class SolrEntityQueryMixin method findEntities.

@Override
public Iterable<EntityReference> findEntities(Class<?> resultType, @Optional Specification<Composite> whereClause, @Optional OrderBy[] orderBySegments, @Optional Integer firstResult, @Optional Integer maxResults, Map<String, Object> variables) throws EntityFinderException {
    try {
        QuerySpecification expr = (QuerySpecification) whereClause;
        SolrServer server = solr.solrServer();
        NamedList<Object> list = new NamedList<Object>();
        list.add("q", expr.query());
        list.add("rows", maxResults != 0 ? maxResults : 10000);
        list.add("start", firstResult);
        if (orderBySegments != null && orderBySegments.length > 0) {
            for (OrderBy orderBySegment : orderBySegments) {
                String propName = ((Member) orderBySegment.property().accessor()).getName() + "_for_sort";
                String order = orderBySegment.order() == OrderBy.Order.ASCENDING ? "asc" : "desc";
                list.add("sort", propName + " " + order);
            }
        }
        SolrParams solrParams = SolrParams.toSolrParams(list);
        logger.debug("Search:" + list.toString());
        QueryResponse query = server.query(solrParams);
        SolrDocumentList results = query.getResults();
        List<EntityReference> references = new ArrayList<EntityReference>(results.size());
        for (SolrDocument result : results) {
            references.add(EntityReference.parseEntityReference(result.getFirstValue("id").toString()));
        }
        return references;
    } catch (SolrServerException e) {
        throw new EntityFinderException(e);
    }
}