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 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);
}
public override void TearDown()
{
base.TearDown();
ctx = null;
strategy = null;
storeShape = true;
}
public SpatialField(string fieldName, SpatialOptions options)
{
this.options = options;
ntsContext = CreateNtsContext(options);
shapeStringReadWriter = new ShapeStringReadWriter(options, ntsContext);
strategy = CreateStrategy(fieldName, options, ntsContext);
}
public static Filter MakeFilter(SpatialStrategy spatialStrategy, IndexQuery indexQuery)
{
var spatialQry = indexQuery as SpatialIndexQuery;
if (spatialQry == null) return null;
var args = new SpatialArgs(SpatialOperation.IsWithin, ShapeReadWriter.ReadShape(spatialQry.QueryShape));
return spatialStrategy.MakeFilter(args);
}
protected void SetUp()
{
maxLength = GeohashPrefixTree.GetMaxLevelsPossible();
fieldInfo = new SimpleSpatialFieldInfo(GetType().Name);
strategy = new RecursivePrefixTreeStrategy(new GeohashPrefixTree(ctx, maxLength));
_directory = new RAMDirectory();
_writer = new IndexWriter(_directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
}
/// <param name="strategy">Needed to compute intersects</param>
/// <param name="args">Used in spatial intersection</param>
/// <param name="field">
/// This field is used to determine which docs have spatial data via
/// <see cref="FieldCache.GetDocsWithField(AtomicReader, string)"/>.
/// Passing null will assume all docs have spatial data.
/// </param>
public DisjointSpatialFilter(SpatialStrategy strategy, SpatialArgs args, string field)
{
this.field = field;
// TODO consider making SpatialArgs cloneable
SpatialOperation origOp = args.Operation; //copy so we can restore
args.Operation = SpatialOperation.Intersects; //temporarily set to intersects
intersectsFilter = strategy.MakeFilter(args);
args.Operation = origOp;
}
/// <param name="strategy">Needed to compute intersects</param>
/// <param name="args">Used in spatial intersection</param>
/// <param name="field">
/// This field is used to determine which docs have spatial data via
/// <see cref="IFieldCache.GetDocsWithField(AtomicReader, string)"/>.
/// Passing <c>null</c> will assume all docs have spatial data.
/// </param>
public DisjointSpatialFilter(SpatialStrategy strategy, SpatialArgs args, string?field)
{
// LUCENENET specific - added guard clauses
if (strategy is null)
{
throw new ArgumentNullException(nameof(strategy));
}
if (args is null)
{
throw new ArgumentNullException(nameof(args));
}
this.field = field;
// TODO consider making SpatialArgs cloneable
SpatialOperation origOp = args.Operation; //copy so we can restore
args.Operation = SpatialOperation.Intersects; //temporarily set to intersects
intersectsFilter = strategy.MakeFilter(args);
args.Operation = origOp;
}
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();
}
public ObjGeneratorDistanceValueSourceAnonymousClass(SpatialStrategy strategy)
{
this.strategy = strategy;
}
public ObjGeneratorFilterAnonymousClass(SpatialStrategy strategy)
{
this.strategy = strategy;
}
protected void Init()
{
//Typical geospatial context
// These can also be constructed from SpatialContextFactory
this.ctx = SpatialContext.GEO;
int maxLevels = 11;//results in sub-meter precision for geohash
//TODO demo lookup by detail distance
// This can also be constructed from SpatialPrefixTreeFactory
SpatialPrefixTree grid = new GeohashPrefixTree(ctx, maxLevels);
this.strategy = new RecursivePrefixTreeStrategy(grid, "myGeoField");
this.directory = new RAMDirectory();
}
public Filter MakeFilter(SpatialStrategy spatialStrategy, IndexQuery indexQuery)
{
var spatialQry = indexQuery as SpatialIndexQuery;
if (spatialQry == null) return null;
var args = new SpatialArgs(SpatialOperation.IsWithin, ReadShape(spatialQry.QueryShape, spatialQry.RadiusUnitOverride));
return spatialStrategy.MakeFilter(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);
}
public Query MakeQuery(Query existingQuery, SpatialStrategy spatialStrategy, SpatialIndexQuery spatialQuery)
{
return MakeQuery(existingQuery, spatialStrategy, spatialQuery.QueryShape, spatialQuery.SpatialRelation, spatialQuery.DistanceErrorPercentage, spatialQuery.RadiusUnitOverride);
}
public ObjGeneratorQueryAnonymousHelper(SpatialStrategy strategy)
{
this.strategy = strategy;
}
public Param(SpatialStrategy strategy) { this.strategy = strategy; }
internal Param(SpatialStrategy strategy)
{
this.strategy = strategy;
}
internal Param(SpatialStrategy strategy)
{
this.strategy = strategy;
}
static SpatialIndex()
{
maxLength = GeohashPrefixTree.GetMaxLevelsPossible();
fieldInfo = new SimpleSpatialFieldInfo(Constants.SpatialFieldName);
strategy = new RecursivePrefixTreeStrategy(new GeohashPrefixTree(RavenSpatialContext, maxLength));
}
