public static Sort GetSort(this IndexQuery self, IndexDefinition indexDefinition)
{
if (self.SortedFields == null || self.SortedFields.Length <= 0)
return null;
var spatialQuery = self as SpatialIndexQuery;
return new Sort(self.SortedFields
.Select(sortedField =>
{
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 (spatialQuery != null && sortedField.Field == Constants.DistanceFieldName)
{
var shape = SpatialIndex.ShapeReadWriter.ReadShape(spatialQuery.QueryShape);
var dsort = new SpatialDistanceFieldComparatorSource(shape.GetCenter());
return new SortField(Constants.DistanceFieldName, dsort, sortedField.Descending);
}
var sortOptions = GetSortOption(indexDefinition, sortedField.Field);
if (sortOptions == null || sortOptions == SortOptions.None)
return new SortField(sortedField.Field, CultureInfo.InvariantCulture, sortedField.Descending);
return new SortField(sortedField.Field, (int)sortOptions.Value, sortedField.Descending);
})
.ToArray());
}
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 (spatialQuery != null && sortedField.Field == Constants.DistanceFieldName)
{
var spatialField = viewGenerator.GetSpatialField(spatialQuery.SpatialFieldName);
var shape = spatialField.ReadShape(spatialQuery.QueryShape);
var dsort = new SpatialDistanceFieldComparatorSource(spatialField, shape.GetCenter());
return new SortField(Constants.DistanceFieldName, dsort, sortedField.Descending);
}
var sortOptions = GetSortOption(indexDefinition, sortedField.Field);
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 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());
}
