Examples with QueryFunction ddf.catalog.util.impl.QueryFunction used on opensource projects

Example 1 with QueryFunction

use of ddf.catalog.util.impl.QueryFunction in project ddf by codice.

the class CswEndpoint method queryCsw.

private CswRecordCollection queryCsw(GetRecordsType request) throws CswException {
    if (LOGGER.isDebugEnabled()) {
        try {
            Writer writer = new StringWriter();
            try {
                Marshaller marshaller = CswQueryFactory.getJaxBContext().createMarshaller();
                marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
                JAXBElement<GetRecordsType> jaxbElement = new ObjectFactory().createGetRecords(request);
                marshaller.marshal(jaxbElement, writer);
            } catch (JAXBException e) {
                LOGGER.debug("Unable to marshall {} to XML", GetRecordsType.class, e);
            }
            LOGGER.debug(writer.toString());
        } catch (Exception e) {
            LOGGER.debug("Unable to create debug message for getRecordsType", e);
        }
    }
    QueryType query = (QueryType) request.getAbstractQuery().getValue();
    CswRecordCollection response = new CswRecordCollection();
    response.setRequest(request);
    response.setOutputSchema(request.getOutputSchema());
    response.setMimeType(request.getOutputFormat());
    response.setElementName(query.getElementName());
    response.setElementSetType((query.getElementSetName() != null) ? query.getElementSetName().getValue() : null);
    response.setResultType((ResultType) ObjectUtils.defaultIfNull(request.getResultType(), ResultType.HITS));
    if (ResultType.HITS.equals(request.getResultType()) || ResultType.RESULTS.equals(request.getResultType())) {
        QueryRequest queryRequest = queryFactory.getQuery(request);
        try {
            queryRequest = queryFactory.updateQueryRequestTags(queryRequest, request.getOutputSchema());
            LOGGER.debug("Attempting to execute paged query: {}", queryRequest);
            AtomicLong hitCount = new AtomicLong(0);
            QueryFunction qf = qr -> {
                SourceResponse sr = framework.query(qr);
                hitCount.compareAndSet(0, sr.getHits());
                return sr;
            };
            ResultIterable results = ResultIterable.resultIterable(qf, queryRequest, request.getMaxRecords().intValue());
            List<Result> resultList = results.stream().collect(Collectors.toList());
            // The hitCount Atomic is used here instead of just defaulting
            // to the size of the resultList because the size of the resultList
            // can be limited to request.getMaxRecords().intValue() which would
            // lead to an incorrect response for hits.
            // hitCount is set within the QueryFunction and will correspond to
            // all responses.
            long totalHits = hitCount.get();
            totalHits = totalHits != 0 ? totalHits : resultList.size();
            QueryResponse queryResponse = new QueryResponseImpl(queryRequest, resultList, totalHits);
            response.setSourceResponse(queryResponse);
        } catch (UnsupportedQueryException | CatalogQueryException e) {
            LOGGER.debug("Unable to query", e);
            throw new CswException(e);
        }
    }
    return response;
}