Exemple #1
0
        public override void Query(Org.Neo4j.Storageengine.Api.schema.IndexProgressor_NodeValueClient cursor, IndexOrder indexOrder, bool needsValues, params IndexQuery[] predicates)
        {
            // Spatial does not support providing values
            if (needsValues)
            {
                throw new System.InvalidOperationException("Spatial index does not support providing values");
            }

            ValidateQuery(indexOrder, predicates);
            IndexQuery predicate = predicates[0];

            SpatialIndexKey treeKeyFrom = layout.newKey();
            SpatialIndexKey treeKeyTo   = layout.newKey();

            InitializeKeys(treeKeyFrom, treeKeyTo);

            switch (predicate.Type())
            {
            case exists:
                StartSeekForExists(treeKeyFrom, treeKeyTo, cursor, predicate);
                break;

            case exact:
                StartSeekForExact(treeKeyFrom, treeKeyTo, cursor, ((IndexQuery.ExactPredicate)predicate).value(), predicate);
                break;

            case range:
                IndexQuery.GeometryRangePredicate rangePredicate = (IndexQuery.GeometryRangePredicate)predicate;
                if (!rangePredicate.Crs().Equals(_spatial.crs))
                {
                    throw new System.ArgumentException("IndexQuery on spatial index with mismatching CoordinateReferenceSystem: " + rangePredicate.Crs() + " != " + _spatial.crs);
                }
                StartSeekForRange(cursor, rangePredicate, predicates);
                break;

            default:
                throw new System.ArgumentException("IndexQuery of type " + predicate.Type() + " is not supported.");
            }
        }
 public override void Query(Org.Neo4j.Storageengine.Api.schema.IndexProgressor_NodeValueClient client, IndexOrder indexOrder, bool needsValues, params IndexQuery[] query)
 {
     IndexQuery.GeometryRangePredicate geometryRangePredicate = GetGeometryRangePredicateIfAny(query);
     if (geometryRangePredicate != null)
     {
         ValidateQuery(indexOrder, query);
         try
         {
             // If there's a GeometryRangeQuery among the predicates then this query changes from a straight-forward: build from/to and seek...
             // into a query that is split into multiple sub-queries. Predicates both before and after will have to be accompanied each sub-query.
             BridgingIndexProgressor multiProgressor = new BridgingIndexProgressor(client, Descriptor.schema().PropertyIds);
             client.Initialize(Descriptor, multiProgressor, query, indexOrder, needsValues);
             double[] from = geometryRangePredicate.From() == null ? null : geometryRangePredicate.From().coordinate();
             double[] to   = geometryRangePredicate.To() == null ? null : geometryRangePredicate.To().coordinate();
             CoordinateReferenceSystem           crs    = geometryRangePredicate.Crs();
             SpaceFillingCurve                   curve  = _spaceFillingCurveSettings.forCrs(crs, false);
             IList <SpaceFillingCurve.LongRange> ranges = curve.GetTilesIntersectingEnvelope(from, to, _configuration);
             foreach (SpaceFillingCurve.LongRange range in ranges)
             {
                 // Here's a sub-query that we'll have to do for this geometry range. Build this query from all predicates
                 // and when getting to the geometry range predicate that sparked these sub-query chenanigans, swap in this sub-query in its place.
                 GenericKey treeKeyFrom = Layout.newKey();
                 GenericKey treeKeyTo   = Layout.newKey();
                 InitializeFromToKeys(treeKeyFrom, treeKeyTo);
                 bool needFiltering = InitializeRangeForGeometrySubQuery(treeKeyFrom, treeKeyTo, query, crs, range);
                 StartSeekForInitializedRange(multiProgressor, treeKeyFrom, treeKeyTo, query, indexOrder, needFiltering, needsValues);
             }
         }
         catch (System.ArgumentException)
         {
             // Invalid query ranges will cause this state (eg. min>max)
             client.Initialize(Descriptor, IndexProgressor.EMPTY, query, indexOrder, needsValues);
         }
     }
     else
     {
         base.Query(client, indexOrder, needsValues, query);
     }
 }
Exemple #3
0
 private void StartSeekForRange(Org.Neo4j.Storageengine.Api.schema.IndexProgressor_NodeValueClient client, IndexQuery.GeometryRangePredicate rangePredicate, IndexQuery[] query)
 {
     try
     {
         BridgingIndexProgressor multiProgressor = new BridgingIndexProgressor(client, descriptor.schema().PropertyIds);
         client.Initialize(descriptor, multiProgressor, query, IndexOrder.NONE, false);
         SpaceFillingCurve curve = _spatial.SpaceFillingCurve;
         double[]          from  = rangePredicate.From() == null ? null : rangePredicate.From().coordinate();
         double[]          to    = rangePredicate.To() == null ? null : rangePredicate.To().coordinate();
         IList <SpaceFillingCurve.LongRange> ranges = curve.GetTilesIntersectingEnvelope(from, to, _configuration);
         foreach (SpaceFillingCurve.LongRange range in ranges)
         {
             SpatialIndexKey treeKeyFrom = layout.newKey();
             SpatialIndexKey treeKeyTo   = layout.newKey();
             InitializeKeys(treeKeyFrom, treeKeyTo);
             treeKeyFrom.FromDerivedValue(long.MinValue, range.Min);
             treeKeyTo.FromDerivedValue(long.MaxValue, range.Max + 1);
             RawCursor <Hit <SpatialIndexKey, VALUE>, IOException> seeker = makeIndexSeeker(treeKeyFrom, treeKeyTo, IndexOrder.NONE);
             IndexProgressor hitProgressor = new NativeHitIndexProgressor <>(seeker, client, openSeekers);
             multiProgressor.Initialize(descriptor, hitProgressor, query, IndexOrder.NONE, false);
         }
     }
     catch (System.ArgumentException)
     {
         // Invalid query ranges will cause this state (eg. min>max)
         client.Initialize(descriptor, IndexProgressor.EMPTY, query, IndexOrder.NONE, false);
     }
     catch (IOException e)
     {
         throw new UncheckedIOException(e);
     }
 }