public IEnumerable <IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
if (string.IsNullOrEmpty(shapeWKT))
{
return(Enumerable.Empty <IFieldable>());
}
if (maxTreeLevel == 0)
{
switch (spatialSearchStrategy)
{
case SpatialSearchStrategy.GeohashPrefixTree:
maxTreeLevel = 9; // about 2 meters, should be good enough (see: http://unterbahn.com/2009/11/metric-dimensions-of-geohash-partitions-at-the-equator/)
break;
case SpatialSearchStrategy.QuadPrefixTree:
maxTreeLevel = 25; // about 1 meter, should be good enough
break;
default:
throw new ArgumentOutOfRangeException("spatialSearchStrategy");
}
}
var strategy = SpatialStrategies.GetOrAdd(fieldName, s => SpatialIndex.CreateStrategy(fieldName, spatialSearchStrategy, maxTreeLevel));
var shape = SpatialIndex.ReadShape(shapeWKT);
return(strategy.CreateIndexableFields(shape)
.Concat(new[] { new Field(Constants.SpatialShapeFieldName, SpatialIndex.WriteShape(shape), Field.Store.YES, Field.Index.NO), }));
}
public IEnumerable <IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
var spatialField = GetSpatialField(fieldName, spatialSearchStrategy, maxTreeLevel);
return(spatialField.CreateIndexableFields(shapeWKT));
}
public static SpatialStrategy CreateStrategy(string fieldName, SpatialSearchStrategy spatialSearchStrategy,
int maxTreeLevel)
{
switch (spatialSearchStrategy)
{
case SpatialSearchStrategy.GeohashPrefixTree:
return new RecursivePrefixTreeStrategyThatSupportsWithin(new GeohashPrefixTree(Context, maxTreeLevel), fieldName);
case SpatialSearchStrategy.QuadPrefixTree:
return new RecursivePrefixTreeStrategyThatSupportsWithin(new QuadPrefixTree(Context, maxTreeLevel), fieldName);
}
return null;
}
public static SpatialStrategy CreateStrategy(string fieldName, SpatialSearchStrategy spatialSearchStrategy,
int maxTreeLevel)
{
switch (spatialSearchStrategy)
{
case SpatialSearchStrategy.GeohashPrefixTree:
return(new RecursivePrefixTreeStrategyThatSupportsWithin(new GeohashPrefixTree(Context, maxTreeLevel), fieldName));
case SpatialSearchStrategy.QuadPrefixTree:
return(new RecursivePrefixTreeStrategyThatSupportsWithin(new QuadPrefixTree(Context, maxTreeLevel), fieldName));
}
return(null);
}
public IEnumerable <IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
if (maxTreeLevel == 0)
{
maxTreeLevel = GeohashPrefixTree.GetMaxLevelsPossible();
}
var strategy = SpatialStrategies.GetOrAdd(fieldName, s => SpatialIndex.CreateStrategy(fieldName, spatialSearchStrategy, maxTreeLevel));
var shape = SpatialIndex.ShapeReadWriter.ReadShape(shapeWKT);
return(strategy.CreateIndexableFields(shape)
.Concat(new[] { new Field(Constants.SpatialShapeFieldName, SpatialIndex.ShapeReadWriter.WriteShape(shape), Field.Store.YES, Field.Index.NO), }));
}
public static SpatialOptions FromLegacy(SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree, int maxTreeLevel = 0)
{
var factory = new GeographySpatialOptionsFactory();
SpatialOptions options;
switch (spatialSearchStrategy)
{
case SpatialSearchStrategy.QuadPrefixTree:
options = factory.QuadPrefixTreeIndex(maxTreeLevel);
break;
default:
options = factory.GeohashPrefixTreeIndex(maxTreeLevel);
break;
}
return options;
}
public static SpatialOptions FromLegacy(SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree, int maxTreeLevel = 0)
{
var factory = new GeographySpatialOptionsFactory();
SpatialOptions options;
switch (spatialSearchStrategy)
{
case SpatialSearchStrategy.QuadPrefixTree:
options = factory.QuadPrefixTreeIndex(maxTreeLevel);
break;
default:
options = factory.GeohashPrefixTreeIndex(maxTreeLevel);
break;
}
return(options);
}
public SpatialField GetSpatialField(string fieldName, SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree, int maxTreeLevel = 0)
{
return(SpatialFields.GetOrAdd(fieldName, s =>
{
if (SpatialFields.Count > 1024)
{
throw new InvalidOperationException("The number of spatial fields in an index is limited to 1,024");
}
SpatialOptions opt;
indexDefinition.SpatialIndexes.TryGetValue(fieldName, out opt);
if (opt == null)
{
opt = SpatialOptionsFactory.FromLegacy(spatialSearchStrategy, maxTreeLevel);
}
return new SpatialField(fieldName, opt);
}));
}
/// <summary>
/// Generates a spatial field in the index, generating a Point from the provided lat/lng coordinates
/// </summary>
/// <param name="fieldName">The field name, will be used for querying</param>
/// <param name="shapeWKT">The shape representation in the WKT format</param>
/// <param name="strategy">The spatial strategy to use</param>
/// <param name="maxTreeLevel">Maximum number of levels to be used in the PrefixTree, controls the precision of shape representation.</param>
/// <returns></returns>
public static object SpatialGenerate(string fieldName, string shapeWKT, SpatialSearchStrategy strategy, int maxTreeLevel)
{
throw new NotSupportedException("This method is provided solely to allow query translation on the server");
}
public IEnumerable<IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
if (string.IsNullOrEmpty(shapeWKT))
return Enumerable.Empty<IFieldable>();
if (maxTreeLevel == 0)
{
switch (spatialSearchStrategy)
{
case SpatialSearchStrategy.GeohashPrefixTree:
maxTreeLevel = 9; // about 2 meters, should be good enough (see: http://unterbahn.com/2009/11/metric-dimensions-of-geohash-partitions-at-the-equator/)
break;
case SpatialSearchStrategy.QuadPrefixTree:
maxTreeLevel = 25; // about 1 meter, should be good enough
break;
default:
throw new ArgumentOutOfRangeException("spatialSearchStrategy");
}
}
var strategy = SpatialStrategies.GetOrAdd(fieldName, s => SpatialIndex.CreateStrategy(fieldName, spatialSearchStrategy, maxTreeLevel));
var shape = SpatialIndex.ReadShape(shapeWKT);
return strategy.CreateIndexableFields(shape)
.Concat(new[] { new Field(Constants.SpatialShapeFieldName, SpatialIndex.WriteShape(shape), Field.Store.YES, Field.Index.NO), });
}
public IEnumerable<IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
if (maxTreeLevel == 0) maxTreeLevel = GeohashPrefixTree.GetMaxLevelsPossible();
var strategy = SpatialStrategies.GetOrAdd(fieldName, s => SpatialIndex.CreateStrategy(fieldName, spatialSearchStrategy, maxTreeLevel));
var shape = SpatialIndex.ShapeReadWriter.ReadShape(shapeWKT);
return strategy.CreateIndexableFields(shape)
.Concat(new[] { new Field(Constants.SpatialShapeFieldName, SpatialIndex.ShapeReadWriter.WriteShape(shape), Field.Store.YES, Field.Index.NO), });
}
public IEnumerable<IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
if (maxTreeLevel == 0)
maxTreeLevel = 9; // about 2 meters, should be good enough (see: http://unterbahn.com/2009/11/metric-dimensions-of-geohash-partitions-at-the-equator/)
var strategy = SpatialStrategies.GetOrAdd(fieldName, s => SpatialIndex.CreateStrategy(fieldName, spatialSearchStrategy, maxTreeLevel));
var shape = SpatialIndex.ReadShape(shapeWKT);
return strategy.CreateIndexableFields(shape)
.Concat(new[] { new Field(Constants.SpatialShapeFieldName, SpatialIndex.WriteShape(shape), Field.Store.YES, Field.Index.NO), });
}
public SpatialField GetSpatialField(string fieldName, SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree, int maxTreeLevel = 0)
{
return SpatialFields.GetOrAdd(fieldName, s =>
{
if (SpatialFields.Count > 1024)
throw new InvalidOperationException("The number of spatial fields in an index is limited to 1,024");
SpatialOptions opt;
indexDefinition.SpatialIndexes.TryGetValue(fieldName, out opt);
if (opt == null)
opt = SpatialOptionsFactory.FromLegacy(spatialSearchStrategy, maxTreeLevel);
return new SpatialField(fieldName, opt);
});
}
public IEnumerable<IFieldable> SpatialGenerate(string fieldName, string shapeWKT,
SpatialSearchStrategy spatialSearchStrategy = SpatialSearchStrategy.GeohashPrefixTree,
int maxTreeLevel = 0, double distanceErrorPct = 0.025)
{
var spatialField = GetSpatialField(fieldName, spatialSearchStrategy, maxTreeLevel);
return spatialField.CreateIndexableFields(shapeWKT);
}
