public override Filter MakeFilter(SpatialArgs args)
{
var op = args.Operation;
if (!SpatialOperation.Is(op, SpatialOperation.IsWithin, SpatialOperation.Intersects, SpatialOperation.BBoxWithin, SpatialOperation.BBoxIntersects))
throw new UnsupportedSpatialOperation(op);
Shape shape = args.GetShape();
int detailLevel = grid.GetMaxLevelForPrecision(shape, args.GetDistPrecision());
return new RecursivePrefixTreeFilter(GetFieldName(), grid, shape, prefixGridScanLevel, detailLevel);
}
public override Filter MakeFilter(SpatialArgs args)
{
SpatialOperation op = args.Operation;
if (
!SpatialOperation.Is(op, SpatialOperation.IsWithin, SpatialOperation.Intersects, SpatialOperation.BBoxWithin,
SpatialOperation.BBoxIntersects))
throw new UnsupportedSpatialOperation(op);
Shape shape = args.GetShape();
int detailLevel = grid.GetMaxLevelForPrecision(shape, args.GetDistPrecision());
var cells = grid.GetNodes(shape, detailLevel, false);
var filter = new TermsFilter();
foreach (Node cell in cells)
{
filter.AddTerm(new Term(GetFieldName(), cell.GetTokenString()));
}
return filter;
}
public override Query MakeQuery(SpatialArgs args)
{
// For starters, just limit the bbox
var shape = args.GetShape();
if (!(shape is Rectangle || shape is Circle))
throw new InvalidShapeException("Only Rectangles and Circles are currently supported, found ["
+ shape.GetType().Name + "]");//TODO
Rectangle bbox = shape.GetBoundingBox();
if (bbox.GetCrossesDateLine())
{
throw new InvalidOperationException("Crossing dateline not yet supported");
}
ValueSource valueSource = null;
Query spatial = null;
SpatialOperation op = args.Operation;
if (SpatialOperation.Is(op,
SpatialOperation.BBoxWithin,
SpatialOperation.BBoxIntersects))
{
spatial = MakeWithin(bbox);
}
else if (SpatialOperation.Is(op,
SpatialOperation.Intersects,
SpatialOperation.IsWithin))
{
spatial = MakeWithin(bbox);
var circle = args.GetShape() as Circle;
if (circle != null)
{
// Make the ValueSource
valueSource = MakeValueSource(args);
var vsf = new ValueSourceFilter(
new QueryWrapperFilter(spatial), valueSource, 0, circle.GetRadius());
spatial = new FilteredQuery(new MatchAllDocsQuery(), vsf);
}
}
else if (op == SpatialOperation.IsDisjointTo)
{
spatial = MakeDisjoint(bbox);
}
if (spatial == null)
{
throw new UnsupportedSpatialOperation(args.Operation);
}
if (valueSource != null)
{
valueSource = new CachingDoubleValueSource(valueSource);
}
else
{
valueSource = MakeValueSource(args);
}
Query spatialRankingQuery = new FunctionQuery(valueSource);
var bq = new BooleanQuery();
bq.Add(spatial, Occur.MUST);
bq.Add(spatialRankingQuery, Occur.MUST);
return bq;
}
public override ValueSource MakeValueSource(SpatialArgs args)
{
Point p = args.GetShape().GetCenter();
return new DistanceValueSource(this, p, ctx.GetDistCalc());
}
public override Filter MakeFilter(SpatialArgs args)
{
var circle = args.GetShape() as Circle;
if (circle != null)
{
if (SpatialOperation.Is(args.Operation,
SpatialOperation.Intersects,
SpatialOperation.IsWithin))
{
Query bbox = MakeWithin(circle.GetBoundingBox());
// Make the ValueSource
ValueSource valueSource = MakeValueSource(args);
return new ValueSourceFilter(
new QueryWrapperFilter(bbox), valueSource, 0, circle.GetRadius());
}
}
return new QueryWrapperFilter(MakeQuery(args));
}
public ValueSource MakeValueSource(SpatialArgs args, DistanceCalculator calc)
{
var p = (PointPrefixTreeFieldCacheProvider)GetCacheProvider();
Point point = args.GetShape().GetCenter();
return new ShapeFieldCacheDistanceValueSource(point, calc, p);
}
