Examples with NoResultsException datawave.query.exceptions.NoResultsException used on opensource projects

Example 1 with NoResultsException

use of datawave.query.exceptions.NoResultsException in project datawave by NationalSecurityAgency.

the class DefaultQueryPlanner method process.

protected CloseableIterable<QueryData> process(ScannerFactory scannerFactory, MetadataHelper metadataHelper, DateIndexHelper dateIndexHelper, ShardQueryConfiguration config, String query, Query settings) throws DatawaveQueryException {
    final QueryData queryData = new QueryData();
    settingFuture = null;
    IteratorSetting cfg = null;
    if (preloadOptions) {
        cfg = getQueryIterator(metadataHelper, config, settings, "", false);
    }
    try {
        config.setQueryTree(updateQueryTree(scannerFactory, metadataHelper, dateIndexHelper, config, query, queryData, settings));
    } catch (StackOverflowError e) {
        if (log.isTraceEnabled()) {
            log.trace("Stack trace for overflow " + e);
        }
        PreConditionFailedQueryException qe = new PreConditionFailedQueryException(DatawaveErrorCode.QUERY_DEPTH_OR_TERM_THRESHOLD_EXCEEDED, e);
        log.warn(qe);
        throw new DatawaveFatalQueryException(qe);
    } catch (NoResultsException e) {
        if (log.isTraceEnabled()) {
            log.trace("Definitively determined that no results exist from the indexes");
        }
        return DefaultQueryPlanner.emptyCloseableIterator();
    }
    boolean isFullTable = false;
    Tuple2<CloseableIterable<QueryPlan>, Boolean> queryRanges = null;
    if (!config.isGeneratePlanOnly()) {
        queryRanges = getQueryRanges(scannerFactory, metadataHelper, config, config.getQueryTree());
        // a full table scan is required if
        isFullTable = queryRanges.second();
        // abort if we cannot handle full table scans
        if (isFullTable && !config.getFullTableScanEnabled()) {
            PreConditionFailedQueryException qe = new PreConditionFailedQueryException(DatawaveErrorCode.FULL_TABLE_SCAN_REQUIRED_BUT_DISABLED);
            throw new FullTableScansDisallowedException(qe);
        }
    }
    final QueryStopwatch timers = config.getTimers();
    TraceStopwatch stopwatch = timers.newStartedStopwatch("DefaultQueryPlanner - Rebuild JEXL String from AST");
    // Set the final query after we're done mucking with it
    String newQueryString = JexlStringBuildingVisitor.buildQuery(config.getQueryTree());
    if (log.isTraceEnabled())
        log.trace("newQueryString is " + newQueryString);
    if (StringUtils.isBlank(newQueryString)) {
        stopwatch.stop();
        QueryException qe = new QueryException(DatawaveErrorCode.EMPTY_QUERY_STRING_AFTER_MODIFICATION);
        throw new DatawaveFatalQueryException(qe);
    }
    stopwatch.stop();
    stopwatch = timers.newStartedStopwatch("DefaultQueryPlanner - Construct IteratorSettings");
    queryData.setQuery(newQueryString);
    if (!config.isGeneratePlanOnly()) {
        while (null == cfg) {
            cfg = getQueryIterator(metadataHelper, config, settings, "", false);
        }
        configureIterator(config, cfg, newQueryString, isFullTable);
    }
    // Load the IteratorSettings into the QueryData instance
    queryData.setSettings(Lists.newArrayList(cfg));
    stopwatch.stop();
    this.plannedScript = newQueryString;
    config.setQueryString(this.plannedScript);
    // docsToCombineForEvaluation is only enabled when threading is used
    if (config.getMaxEvaluationPipelines() == 1)
        docsToCombineForEvaluation = -1;
    if (!config.isGeneratePlanOnly()) {
        // add the geo query comparator to sort by geo range granularity if this is a geo query
        List<Comparator<QueryPlan>> queryPlanComparators = null;
        if (config.isSortGeoWaveQueryRanges()) {
            List<String> geoFields = new ArrayList<>();
            for (String fieldName : config.getIndexedFields()) {
                for (Type type : config.getQueryFieldsDatatypes().get(fieldName)) {
                    if (type instanceof AbstractGeometryType) {
                        geoFields.add(fieldName);
                        break;
                    }
                }
            }
            if (!geoFields.isEmpty()) {
                queryPlanComparators = new ArrayList<>();
                queryPlanComparators.add(new GeoWaveQueryPlanComparator(geoFields));
                queryPlanComparators.add(new DefaultQueryPlanComparator());
            }
        }
        // @formatter:off
        return new ThreadedRangeBundler.Builder().setOriginal(queryData).setQueryTree(config.getQueryTree()).setRanges(queryRanges.first()).setMaxRanges(maxRangesPerQueryPiece()).setDocsToCombine(docsToCombineForEvaluation).setSettings(settings).setDocSpecificLimitOverride(docSpecificOverride).setMaxRangeWaitMillis(maxRangeWaitMillis).setQueryPlanComparators(queryPlanComparators).setNumRangesToBuffer(config.getNumRangesToBuffer()).setRangeBufferTimeoutMillis(config.getRangeBufferTimeoutMillis()).setRangeBufferPollMillis(config.getRangeBufferPollMillis()).build();
    // @formatter:on
    } else {
        return null;
    }
}

Example 2 with NoResultsException

use of datawave.query.exceptions.NoResultsException in project datawave by NationalSecurityAgency.

the class DefaultQueryPlanner method timedExpandAnyFieldRegexNodes.

protected ASTJexlScript timedExpandAnyFieldRegexNodes(QueryStopwatch timers, final ASTJexlScript script, ShardQueryConfiguration config, MetadataHelper metadataHelper, ScannerFactory scannerFactory, String query) throws DatawaveQueryException {
    try {
        config.setIndexedFields(metadataHelper.getIndexedFields(config.getDatatypeFilter()));
        config.setReverseIndexedFields(metadataHelper.getReverseIndexedFields(config.getDatatypeFilter()));
        // @formatter:off
        return visitorManager.timedVisit(timers, "Expand ANYFIELD Regex Nodes", () -> {
            try {
                return UnfieldedIndexExpansionVisitor.expandUnfielded(config, scannerFactory, metadataHelper, script);
            } catch (InstantiationException | IllegalAccessException | TableNotFoundException e) {
                // rethrow as a datawave query exception because method contracts
                throw new DatawaveQueryException(e);
            }
        });
    // @formatter:on
    } catch (EmptyUnfieldedTermExpansionException e) {
        // The visitor will only throw this if we cannot expand anything resulting in empty query
        NotFoundQueryException qe = new NotFoundQueryException(DatawaveErrorCode.UNFIELDED_QUERY_ZERO_MATCHES, e, MessageFormat.format("Query: ", query));
        log.info(qe);
        throw new NoResultsException(qe);
    } catch (TableNotFoundException e) {
        QueryException qe = new QueryException(DatawaveErrorCode.METADATA_ACCESS_ERROR, e);
        log.info(qe);
        throw new DatawaveFatalQueryException(qe);
    }
}