private List<IFieldable> AddPoint(Item item)
{
List<IFieldable> pointFields = new List<IFieldable>();
var setting = spatialConfigurations.LocationSettings.Where(i => i.TemplateId.Equals(item.TemplateID)).FirstOrDefault();
if (setting == null)
return pointFields;
SpatialContext ctx = SpatialContext.GEO;
SpatialPrefixTree grid = new GeohashPrefixTree(ctx, 11);
var strategy = new PointVectorStrategy(ctx, Sitecore.ContentSearch.Spatial.Common.Constants.LocationFieldName);
double lng = 0;
double lat = 0;
bool parsedLat = false;
bool parsedLong = false;
if (!string.IsNullOrEmpty(item[setting.LatitudeField]))
{
parsedLat = Double.TryParse(item[setting.LatitudeField], out lat);
}
if (!string.IsNullOrEmpty(item[setting.LongitudeField]))
{
parsedLong = Double.TryParse(item[setting.LongitudeField], out lng);
}
if (!parsedLat && !parsedLong)
return pointFields;
pointFields = AddPoint( lng, lat);
return pointFields;
}
//Tests should call this first.
private void init(int maxLength)
{
this.maxLength = maxLength;
this.ctx = SpatialContext.GEO;
var grid = new GeohashPrefixTree(ctx, maxLength);
this.strategy = new RecursivePrefixTreeStrategy(grid, GetType().Name);
}
public object ComputeFieldValue(Sitecore.ContentSearch.IIndexable indexable)
{
var indexableItem = indexable as SitecoreIndexableItem;
if (indexableItem == null)
return null;
var item = (Sitecore.Data.Items.Item)indexableItem;
if (item == null)
return null;
var latLon = item[SourceFieldName];
if (latLon == "" || latLon == "NULL")
return null;
// Convert from georss point to normal X, Y format
latLon = latLon.Replace(" ", ", ");
var spatialContext = SpatialContext.GEO;
var geohashTree = new GeohashPrefixTree(spatialContext, 10);
var strategy = new RecursivePrefixTreeStrategy(geohashTree, FieldName);
var shape = spatialContext.ReadShape(latLon);
var grid = strategy.GetGrid();
int levelForDistance = grid.GetLevelForDistance(strategy.DistErrPct);
IList<Node> list = grid.GetNodes(shape, levelForDistance, true);
return list.Select(node => node.GetTokenString());
}
private static readonly double LUCENE_4464_distErrPct = SpatialArgs.DEFAULT_DISTERRPCT;//DEFAULT 2.5%
public NtsPolygonTest()
{
//var args = new HashMap<String, String> {{"spatialContextFactory", "com.spatial4j.core.context.jts.JtsSpatialContextFactory"}};
//SpatialContextFactory.MakeSpatialContext(args, getClass().getClassLoader());
ctx = new NtsSpatialContext(true);
var grid = new GeohashPrefixTree(ctx, 11);//< 1 meter == 11 maxLevels
this.strategy = new RecursivePrefixTreeStrategy(grid, GetType().Name);
((RecursivePrefixTreeStrategy)this.strategy).DistErrPct = LUCENE_4464_distErrPct;//1% radius (small!)
}
protected internal override int GetLevelForDistance(double degrees)
{
// LUCENENET specific - added guard clause
if (m_ctx is null)
{
throw new InvalidOperationException($"{nameof(m_ctx)} must be set prior to calling GetLevelForDistance(double).");
}
var grid = new GeohashPrefixTree(m_ctx, GeohashPrefixTree.MaxLevelsPossible);
return(grid.GetLevelForDistance(degrees));
}
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();
}
private static readonly double LUCENE_4464_distErrPct = SpatialArgs.DEFAULT_DISTERRPCT;//DEFAULT 2.5%
public NtsPolygonTest()
{
try
{
IDictionary<string, string> args = new Dictionary<string, string>();
args.Put("spatialContextFactory",
typeof(NtsSpatialContextFactory).AssemblyQualifiedName);
ctx = SpatialContextFactory.MakeSpatialContext(args /*, getClass().getClassLoader()*/);
}
catch (TypeLoadException e) //LUCENENET TODO: Does this match NoClassDefFoundError ??
{
AssumeTrue("This test requires Spatial4n.Core.NTS: " + e, false);
}
GeohashPrefixTree grid = new GeohashPrefixTree(ctx, 11);//< 1 meter == 11 maxLevels
this.strategy = new RecursivePrefixTreeStrategy(grid, GetType().Name);
((RecursivePrefixTreeStrategy)this.strategy).DistErrPct = (LUCENE_4464_distErrPct);//1% radius (small!)
}
public void CreateSpatialFilterAndWeight(PointRadiusCriterion geoFilter, Filter currentFilter, Weight currentWeight)
{
var spatialContext = SpatialContext.GEO;
var geohashTree = new GeohashPrefixTree(spatialContext, 10);
var strategy = new RecursivePrefixTreeStrategy(geohashTree, geoFilter.FieldName);
var point = spatialContext.MakePoint(geoFilter.Longitude, geoFilter.Latitude);
var spatialArgs = new SpatialArgs(SpatialOperation.Intersects, spatialContext.MakeCircle(point,
DistanceUtils.Dist2Degrees(geoFilter.RadiusKm, DistanceUtils.EARTH_MEAN_RADIUS_KM)));
var circle = spatialContext.MakeCircle(point,
DistanceUtils.Dist2Degrees(geoFilter.RadiusKm, DistanceUtils.EARTH_MEAN_RADIUS_KM));
var circleCells = strategy.GetGrid().GetWorldNode().GetSubCells(circle);
var luceneFilters = new List<Filter>();
if (currentFilter != null)
luceneFilters.Add(currentFilter);
var tempSpatial = strategy.MakeFilter(spatialArgs);
luceneFilters.Add(tempSpatial);
if (geoFilter.Sort != PointRadiusCriterion.SortOption.None)
{
var valueSource = strategy.MakeDistanceValueSource(point);
var funcQ = new FunctionQuery(valueSource);
// this is a bit odd... but boosting the score negatively orders results
if (geoFilter.Sort == PointRadiusCriterion.SortOption.Ascending)
{
funcQ.Boost = -1;
}
spatialWeight = funcQ.CreateWeight(this);
spatialWeight.GetSumOfSquaredWeights();
luceneFilters.Add(new QueryWrapperFilter(currentWeight.Query));
}
spatialFilter = new ChainedFilter(luceneFilters.ToArray(), 1);
}
public IEnumerable<Param> ParamsProvider()
{
var ctorArgs = new List<Param>();
SpatialContext ctx = SpatialContext.GEO;
SpatialPrefixTree grid = new GeohashPrefixTree(ctx, 12);
SpatialStrategy strategy = new RecursivePrefixTreeStrategy(grid, "recursive_geohash");
ctorArgs.Add(new Param(strategy));
grid = new QuadPrefixTree(ctx, 25);
strategy = new RecursivePrefixTreeStrategy(grid, "recursive_quad");
ctorArgs.Add(new Param(strategy));
grid = new GeohashPrefixTree(ctx, 12);
strategy = new TermQueryPrefixTreeStrategy(grid, "termquery_geohash");
ctorArgs.Add(new Param(strategy));
strategy = new PointVectorStrategy(ctx, "pointvector");
ctorArgs.Add(new Param(strategy));
return ctorArgs;
}
//@ParametersFactory
public static IList<Object[]> Parameters()
{
List<Object[]> ctorArgs = new List<object[]>();
SpatialContext ctx = SpatialContext.GEO;
SpatialPrefixTree grid;
SpatialStrategy strategy;
grid = new QuadPrefixTree(ctx, 25);
strategy = new RecursivePrefixTreeStrategy(grid, "recursive_quad");
ctorArgs.Add(new Object[] { new Param(strategy) });
grid = new GeohashPrefixTree(ctx, 12);
strategy = new TermQueryPrefixTreeStrategy(grid, "termquery_geohash");
ctorArgs.Add(new Object[] { new Param(strategy) });
strategy = new PointVectorStrategy(ctx, "pointvector");
ctorArgs.Add(new Object[] { new Param(strategy) });
strategy = new SerializedDVStrategy(ctx, "serialized");
ctorArgs.Add(new Object[] { new Param(strategy) });
return ctorArgs;
}
internal GhCell(GeohashPrefixTree outerInstance, byte[] bytes, int off, int len)
: base(outerInstance, bytes, off, len)
{
}
internal GhCell(GeohashPrefixTree outerInstance, string token)
: base(outerInstance, token)
{
}
protected override SpatialPrefixTree NewSPT()
{
return(new GeohashPrefixTree(ctx, maxLevels != null ? maxLevels.Value : GeohashPrefixTree.GetMaxLevelsPossible()));
}
public GhCell(String token, GeohashPrefixTree enclosingInstance)
: base(enclosingInstance, token)
{
}
protected internal override int GetLevelForDistance(double degrees)
{
var grid = new GeohashPrefixTree(ctx, GeohashPrefixTree.MaxLevelsPossible);
return grid.GetLevelForDistance(degrees);
}
internal GhCell(GeohashPrefixTree outerInstance, byte[] bytes, int off, int len)
: base(outerInstance, bytes, off, len)
{
}
internal GhCell(GeohashPrefixTree _enclosing, string token)
: base(token)
{
this._enclosing = _enclosing;
}
public GhCell(String token, GeohashPrefixTree enclosingInstance)
: base(enclosingInstance, token)
{
}
internal GhCell(GeohashPrefixTree _enclosing, byte[] bytes, int off, int len)
: base(bytes, off, len)
{
this._enclosing = _enclosing;
}
internal GhCell(GeohashPrefixTree _enclosing, string token)
: base(token)
{
this._enclosing = _enclosing;
}
protected internal override int GetLevelForDistance(double degrees)
{
var grid = new GeohashPrefixTree(ctx, MaxLevelsPossible);
return(grid.GetLevelForDistance(degrees));
}
internal GhCell(GeohashPrefixTree outerInstance, string token)
: base(outerInstance, token)
{
}
internal GhCell(GeohashPrefixTree _enclosing, byte[] bytes, int off, int len)
: base(bytes, off, len)
{
this._enclosing = _enclosing;
}
protected override int GetLevelForDistance(double degrees)
{
var grid = new GeohashPrefixTree(ctx, GeohashPrefixTree.GetMaxLevelsPossible());
return grid.GetLevelForDistance(degrees) + 1;//returns 1 greater
}