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public MakeQuery ( |
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public static Query MakeQuery(SpatialStrategy spatialStrategy, string shapeWKT, SpatialRelation relation,
double distanceErrorPct = 0.025)
{
SpatialOperation spatialOperation;
Shape shape = ShapeReadWriter.ReadShape(shapeWKT);
switch (relation)
{
case SpatialRelation.Within:
spatialOperation = SpatialOperation.IsWithin;
break;
case SpatialRelation.Contains:
spatialOperation = SpatialOperation.Contains;
break;
case SpatialRelation.Disjoint:
spatialOperation = SpatialOperation.IsDisjointTo;
break;
case SpatialRelation.Intersects:
spatialOperation = SpatialOperation.Intersects;
break;
case SpatialRelation.Nearby:
var nearbyArgs = new SpatialArgs(SpatialOperation.IsWithin, shape);
nearbyArgs.SetDistPrecision(distanceErrorPct);
// only sort by this, do not filter
return new FunctionQuery(spatialStrategy.MakeValueSource(nearbyArgs));
default:
throw new ArgumentOutOfRangeException("relation");
}
var args = new SpatialArgs(spatialOperation, shape);
args.SetDistPrecision(distanceErrorPct);
return spatialStrategy.MakeQuery(args);
}
static void Main(string[] args)
{
int maxLength = GeohashPrefixTree.GetMaxLevelsPossible();
strategy = new RecursivePrefixTreeStrategy(
new GeohashPrefixTree(context, maxLength));
var dir = new RAMDirectory();
var writer = new IndexWriter(dir, new SimpleAnalyzer(), true,
IndexWriter.MaxFieldLength.UNLIMITED);
AddPoint(writer, "London", -81.233040, 42.983390);
AddPoint(writer, "East New York", -73.882360, 40.666770);
AddPoint(writer, "Manhattan", -73.966250, 40.783430);
AddPoint(writer, "New York City", -74.005970, 40.714270);
AddPoint(writer, "Oslo", 10.746090, 59.912730);
AddPoint(writer, "Bergen", 5.324150, 60.392990);
AddPoint(writer, "Washington, D. C.", -77.036370, 38.895110);
writer.Close();
// Origin point - Oslo Spektrum
const double lat = 59.9138688;
const double lng = 10.752245399999993;
const double radius = 600;
var query = strategy.MakeQuery(new SpatialArgs(SpatialOperation.IsWithin,
context.MakeCircle(lng, lat, radius)), fieldInfo);
var searcher = new IndexSearcher(dir);
var results = searcher.Search(query, null, 100);
foreach (var topDoc in results.ScoreDocs)
{
var name = searcher.Doc(topDoc.doc).Get("Name");
Console.WriteLine(name);
}
searcher.Close();
dir.Close();
}
protected virtual Query makeQuery(SpatialTestQuery q)
{
return(strategy.MakeQuery(q.args));
}
public static Query MakeQuery(SpatialStrategy spatialStrategy, string shapeWKT, SpatialRelation relation,
double distanceErrorPct = 0.025)
{
SpatialOperation spatialOperation;
var shape = ReadShape(shapeWKT);
switch (relation)
{
case SpatialRelation.Within:
spatialOperation = SpatialOperation.IsWithin;
break;
case SpatialRelation.Contains:
spatialOperation = SpatialOperation.Contains;
break;
case SpatialRelation.Disjoint:
spatialOperation = SpatialOperation.IsDisjointTo;
break;
case SpatialRelation.Intersects:
spatialOperation = SpatialOperation.Intersects;
break;
case SpatialRelation.Nearby:
// only sort by this, do not filter
return new FunctionQuery(spatialStrategy.MakeDistanceValueSource(shape.GetCenter()));
default:
throw new ArgumentOutOfRangeException("relation");
}
var args = new SpatialArgs(spatialOperation, shape) { DistErrPct = distanceErrorPct };
return spatialStrategy.MakeQuery(args);
}
public object gen(SpatialArgs args)
{
return(strategy.MakeQuery(args));
}
public Query MakeQuery(Query existingQuery, SpatialStrategy spatialStrategy, string shapeWKT, SpatialRelation relation,
double distanceErrorPct = 0.025, SpatialUnits? unitOverride = null)
{
SpatialOperation spatialOperation;
var shape = ReadShape(shapeWKT, unitOverride);
switch (relation)
{
case SpatialRelation.Within:
spatialOperation = SpatialOperation.IsWithin;
break;
case SpatialRelation.Contains:
spatialOperation = SpatialOperation.Contains;
break;
case SpatialRelation.Disjoint:
spatialOperation = SpatialOperation.IsDisjointTo;
break;
case SpatialRelation.Intersects:
spatialOperation = SpatialOperation.Intersects;
break;
case SpatialRelation.Nearby:
// only sort by this, do not filter
return new FunctionQuery(spatialStrategy.MakeDistanceValueSource(shape.GetCenter()));
default:
throw new ArgumentOutOfRangeException("relation");
}
var args = new SpatialArgs(spatialOperation, shape) { DistErrPct = distanceErrorPct };
if (existingQuery is MatchAllDocsQuery)
return new CustomScoreQuery(spatialStrategy.MakeQuery(args), new ValueSourceQuery(spatialStrategy.MakeRecipDistanceValueSource(shape)));
return spatialStrategy.MakeQuery(args);
}
