Examples with NoResultException ai.grakn.graql.internal.analytics.NoResultException used on opensource projects

Example 1 with NoResultException

use of ai.grakn.graql.internal.analytics.NoResultException in project grakn by graknlabs.

the class TinkerComputeQueryRunner method run.

public ComputeJob<Map<String, Set<String>>> run(KCoreQuery query) {
    return runCompute(query, tinkerComputeQuery -> {
        long k = query.kValue();
        if (k < 2L)
            throw GraqlQueryException.kValueSmallerThanTwo();
        if (!tinkerComputeQuery.selectedTypesHaveInstance()) {
            return Collections.emptyMap();
        }
        ComputerResult result;
        Set<LabelId> subLabelIds = convertLabelsToIds(tinkerComputeQuery.subLabels());
        try {
            result = tinkerComputeQuery.compute(new KCoreVertexProgram(k), new ClusterMemberMapReduce(KCoreVertexProgram.K_CORE_LABEL), subLabelIds);
        } catch (NoResultException e) {
            return Collections.emptyMap();
        }
        return result.memory().get(ClusterMemberMapReduce.class.getName());
    });
}

Example 2 with NoResultException

use of ai.grakn.graql.internal.analytics.NoResultException in project grakn by graknlabs.

the class TinkerComputeQueryRunner method run.

public ComputeJob<Map<Long, Set<String>>> run(CorenessQuery query) {
    return runCompute(query, tinkerComputeQuery -> {
        long k = query.minK();
        if (k < 2L)
            throw GraqlQueryException.kValueSmallerThanTwo();
        Set<Label> ofLabels;
        // Check if ofType is valid before returning emptyMap
        if (query.targetLabels().isEmpty()) {
            ofLabels = tinkerComputeQuery.subLabels();
        } else {
            ofLabels = query.targetLabels().stream().flatMap(typeLabel -> {
                Type type = tx.getSchemaConcept(typeLabel);
                if (type == null)
                    throw GraqlQueryException.labelNotFound(typeLabel);
                if (type.isRelationshipType())
                    throw GraqlQueryException.kCoreOnRelationshipType(typeLabel);
                return type.subs();
            }).map(SchemaConcept::getLabel).collect(Collectors.toSet());
        }
        Set<Label> subLabels = Sets.union(tinkerComputeQuery.subLabels(), ofLabels);
        if (!tinkerComputeQuery.selectedTypesHaveInstance()) {
            return Collections.emptyMap();
        }
        ComputerResult result;
        Set<LabelId> subLabelIds = convertLabelsToIds(subLabels);
        Set<LabelId> ofLabelIds = convertLabelsToIds(ofLabels);
        try {
            result = tinkerComputeQuery.compute(new CorenessVertexProgram(k), new DegreeDistributionMapReduce(ofLabelIds, CorenessVertexProgram.CORENESS), subLabelIds);
        } catch (NoResultException e) {
            return Collections.emptyMap();
        }
        return result.memory().get(DegreeDistributionMapReduce.class.getName());
    });
}

Example 3 with NoResultException

use of ai.grakn.graql.internal.analytics.NoResultException in project grakn by graknlabs.

the class TinkerComputeQueryRunner method run.

public TinkerComputeJob<List<List<Concept>>> run(PathsQuery query) {
    return runCompute(query, tinkerComputeQuery -> {
        ConceptId sourceId = query.from();
        ConceptId destinationId = query.to();
        if (!tinkerComputeQuery.verticesExistInSubgraph(sourceId, destinationId)) {
            throw GraqlQueryException.instanceDoesNotExist();
        }
        if (sourceId.equals(destinationId)) {
            return Collections.singletonList(Collections.singletonList(tx.getConcept(sourceId)));
        }
        ComputerResult result;
        Set<LabelId> subLabelIds = convertLabelsToIds(tinkerComputeQuery.subLabels());
        try {
            result = tinkerComputeQuery.compute(new ShortestPathVertexProgram(sourceId, destinationId), null, subLabelIds);
        } catch (NoResultException e) {
            return Collections.emptyList();
        }
        Multimap<Concept, Concept> predecessorMapFromSource = tinkerComputeQuery.getPredecessorMap(result);
        List<List<Concept>> allPaths = tinkerComputeQuery.getAllPaths(predecessorMapFromSource, sourceId);
        if (tinkerComputeQuery.isAttributeIncluded()) {
            // this can be slow
            return tinkerComputeQuery.getExtendedPaths(allPaths);
        }
        LOG.info("Number of paths: " + allPaths.size());
        return allPaths;
    });
}