Examples with RawQuery com.thinkaurelius.titan.diskstorage.indexing.RawQuery used on opensource projects

Example 1 with RawQuery

use of com.thinkaurelius.titan.diskstorage.indexing.RawQuery in project incubator-atlas by apache.

the class Solr5Index method query.

@Override
public Iterable<RawQuery.Result<String>> query(RawQuery query, KeyInformation.IndexRetriever informations, BaseTransaction tx) throws BackendException {
    List<RawQuery.Result<String>> result;
    String collection = query.getStore();
    String keyIdField = getKeyFieldId(collection);
    SolrQuery solrQuery = new SolrQuery(query.getQuery()).addField(keyIdField).setIncludeScore(true).setStart(query.getOffset()).setRows(query.hasLimit() ? query.getLimit() : maxResults);
    try {
        QueryResponse response = solrClient.query(collection, solrQuery);
        if (logger.isDebugEnabled())
            logger.debug("Executed query [{}] in {} ms", query.getQuery(), response.getElapsedTime());
        int totalHits = response.getResults().size();
        if (!query.hasLimit() && totalHits >= maxResults) {
            logger.warn("Query result set truncated to first [{}] elements for query: {}", maxResults, query);
        }
        result = new ArrayList<>(totalHits);
        for (SolrDocument hit : response.getResults()) {
            double score = Double.parseDouble(hit.getFieldValue("score").toString());
            result.add(new RawQuery.Result<>(hit.getFieldValue(keyIdField).toString(), score));
        }
    } catch (IOException e) {
        logger.error("Query did not complete : ", e);
        throw new PermanentBackendException(e);
    } catch (SolrServerException e) {
        logger.error("Unable to query Solr index.", e);
        throw new PermanentBackendException(e);
    }
    return result;
}