public void PureLucene()
{
using (var dir = new RAMDirectory())
{
using (var keywordAnalyzer = new KeywordAnalyzer())
using (var writer = new IndexWriter(dir, keywordAnalyzer, true, IndexWriter.MaxFieldLength.UNLIMITED))
{
var doc = new Lucene.Net.Documents.Document();
var writeShape = NtsSpatialContext.GEO.ReadShape("LINESTRING (0 0, 1 1, 2 1)");
var spatialField = new SpatialField("WKT", new SpatialOptionsFactory().Geography.Default());
var writeStrategy = spatialField.GetStrategy();
foreach (var f in writeStrategy.CreateIndexableFields(writeShape))
{
doc.Add(f);
}
writer.AddDocument(doc);
writer.Commit();
}
var shape = NtsSpatialContext.GEO.ReadShape("LINESTRING (1 0, 1 1, 1 2)");
SpatialArgs args = new SpatialArgs(SpatialOperation.Intersects, shape);
var spatialField2 = new SpatialField("WKT", new SpatialOptionsFactory().Geography.Default());
var writeStrategy2 = spatialField2.GetStrategy();
var makeQuery = writeStrategy2.MakeQuery(args);
using (var search = new IndexSearcher(dir))
{
var topDocs = search.Search(makeQuery, 5);
Assert.Equal(1, topDocs.TotalHits);
}
}
}
internal static IEnumerable <AbstractField> CreateSpatialField(SpatialField spatialField, double?lat, double?lng)
{
if (lng == null || double.IsNaN(lng.Value))
{
return(Enumerable.Empty <AbstractField>());
}
if (lat == null || double.IsNaN(lat.Value))
{
return(Enumerable.Empty <AbstractField>());
}
Shape shape = spatialField.GetContext().MakePoint(lng.Value, lat.Value);
return(spatialField.CreateIndexableFields(shape));
}
private static Shape HandleWkt(Query query, MethodExpression expression, QueryMetadata metadata, BlittableJsonReaderObject parameters, string fieldName,
SpatialField spatialField)
{
var wktValue = GetValue(fieldName, query, metadata, parameters, (ValueExpression)expression.Arguments[0]);
AssertValueIsString(fieldName, wktValue.Type);
SpatialUnits?spatialUnits = null;
if (expression.Arguments.Count == 2)
{
spatialUnits = GetSpatialUnits(query, expression.Arguments[3] as ValueExpression, metadata, parameters, fieldName);
}
return(spatialField.ReadShape((string)wktValue.Value, spatialUnits));
}
private static Shape HandleCircle(Query query, MethodExpression expression, QueryMetadata metadata, BlittableJsonReaderObject parameters, string fieldName,
SpatialField spatialField)
{
var radius = GetValue(fieldName, query, metadata, parameters, (ValueExpression)expression.Arguments[0]);
AssertValueIsNumber(fieldName, radius.Type);
var latitute = GetValue(fieldName, query, metadata, parameters, (ValueExpression)expression.Arguments[1]);
AssertValueIsNumber(fieldName, latitute.Type);
var longitude = GetValue(fieldName, query, metadata, parameters, (ValueExpression)expression.Arguments[2]);
AssertValueIsNumber(fieldName, longitude.Type);
SpatialUnits?spatialUnits = null;
if (expression.Arguments.Count == 4)
{
spatialUnits = GetSpatialUnits(query, expression.Arguments[3] as ValueExpression, metadata, parameters, fieldName);
}
return(spatialField.ReadCircle(Convert.ToDouble(radius.Value), Convert.ToDouble(latitute.Value), Convert.ToDouble(longitude.Value), spatialUnits));
}
internal static IEnumerable <AbstractField> CreateSpatialField(SpatialField spatialField, object shapeWKT)
{
return(spatialField.CreateIndexableFields(shapeWKT));
}
internal static IEnumerable <AbstractField> CreateSpatialField(SpatialField spatialField, object lat, object lng)
{
return(CreateSpatialField(spatialField, ConvertToDouble(lat), ConvertToDouble(lng)));
}
public static Sort GetSort(this IndexQuery self, IndexDefinition indexDefinition, AbstractViewGenerator viewGenerator)
{
var spatialQuery = self as SpatialIndexQuery;
var sortedFields = self.SortedFields;
if (sortedFields == null || sortedFields.Length <= 0)
{
if (spatialQuery == null || string.IsNullOrEmpty(self.Query) == false)
{
return(null);
}
sortedFields = new[] { new SortedField(Constants.DistanceFieldName), };
}
return(new Sort(sortedFields
.Select(sortedField =>
{
if (sortedField.Field == Constants.TemporaryScoreValue)
{
return SortField.FIELD_SCORE;
}
if (sortedField.Field.StartsWith(Constants.RandomFieldName))
{
var parts = sortedField.Field.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length < 2) // truly random
{
return new RandomSortField(Guid.NewGuid().ToString());
}
return new RandomSortField(parts[1]);
}
if (sortedField.Field.StartsWith(Constants.CustomSortFieldName))
{
var parts = sortedField.Field.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length < 2) // truly random
{
throw new InvalidOperationException("Cannot figure out type for custom sort");
}
return new CustomSortField(parts[1], self, parts[0][parts[0].Length - 1] == '-');
}
if (sortedField.Field.StartsWith(Constants.DistanceFieldName))
{
SpatialField spatialField = null;
Shape shape;
if (sortedField.Field.Length == Constants.DistanceFieldName.Length)
{
if (spatialQuery == null)
{
throw new InvalidOperationException("Illegal Spatial Sort Parameter: Blank Spatial sort cannot be used without a spatial query");
}
spatialField = viewGenerator.GetSpatialField(spatialQuery.SpatialFieldName);
shape = spatialField.ReadShape(spatialQuery.QueryShape);
}
else
{
var sortParams = sortedField.Field.Split(';');
double lat, lng;
if (sortParams.Length < 3 || !double.TryParse(sortParams[1], out lat) || !double.TryParse(sortParams[2], out lng))
{
throw new InvalidOperationException("Illegal Spatial Sort Parameter");
}
string spatialFieldName;
if (sortParams.Length >= 4)
{
spatialFieldName = sortParams[3];
}
else
{
if (spatialQuery == null)
{
spatialFieldName = Constants.DefaultSpatialFieldName;
}
else
{
spatialFieldName = spatialQuery.SpatialFieldName;
}
}
spatialField = viewGenerator.GetSpatialField(spatialFieldName);
shape = new PointImpl(lng, lat, spatialField.GetContext());
}
var dsort = new SpatialDistanceFieldComparatorSource(spatialField, shape.GetCenter());
return new SortField(sortedField.Field, dsort, sortedField.Descending);
}
var sortOptions = GetSortOption(indexDefinition, sortedField.Field, self);
if (sortOptions == null || sortOptions == SortOptions.None)
{
return new SortField(sortedField.Field, CultureInfo.InvariantCulture, sortedField.Descending);
}
if (sortOptions.Value == SortOptions.Short)
{
sortOptions = SortOptions.Int;
}
return new SortField(sortedField.Field, (int)sortOptions.Value, sortedField.Descending);
})
.ToArray()));
}
public override IDocumentQuery <T> WithinRadiusOf(IPosition position, Distance distance)
{
return(_query.WithinRadiusOf(SpatialField.NameFor(_propertySelector), distance.ConvertTo(DistanceUnit.Km).Value, position.GetCoordinate().Latitude, position.GetCoordinate().Longitude));
}
public override IDocumentQuery <T> RelatesToShape(IRavenIndexable geometry, SpatialRelation relation)
{
return(_query.RelatesToShape(SpatialField.NameFor(_propertySelector), _writer.Write(geometry.GetSpatial4nShape()), relation));
}
public SpatialDistanceFieldComparator(SpatialField spatialField, Point origin, int numHits)
{
this.spatialField = spatialField;
values = new DistanceValue[numHits];
originPt = origin;
}
public SpatialDistanceFieldComparatorSource(SpatialField spatialField, Point center)
{
this.spatialField = spatialField;
this.center = center;
}
public SpatialDistanceFieldComparator(SpatialField spatialField, Point origin, int numHits)
{
this.spatialField = spatialField;
values = new DistanceValue[numHits];
originPt = origin;
}
public SpatialDistanceFieldComparatorSource(SpatialField spatialField, Point center)
{
this.spatialField = spatialField;
this.center = center;
}
public override IRavenQueryable <T> WithinRadiusOf(IPosition position, Distance distance)
{
return(_source.Customize(x => x.WithinRadiusOf(SpatialField.NameFor(_property), distance.ConvertTo(DistanceUnit.Km).Value, position.GetCoordinate().Latitude, position.GetCoordinate().Longitude)));
}
public override IRavenQueryable <T> RelatesToShape(IRavenIndexable geometry, SpatialRelation relation)
{
return(_source.Customize(x => x.RelatesToShape(SpatialField.NameFor(_property), _writer.Write(geometry.GetSpatial4nShape()), relation)));
}