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);
}
}
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);
}
}