private IFacetItem GetFacetItem(string root, IEnumerable <IFacetParameter <TDocument> > facetParameters)
{
var initialPath = this._jsonReader.Path;
var facetName = (string)this._jsonReader.Value;
var facetParameter = GetFacetParameter(facetParameters, facetName);
IFacetItem facetItem;
this._jsonReader.Read(); // Closes property
this._jsonReader.Read(); // Go to checker element
// Facet query
if ((string)this._jsonReader.Value == "count")
{
facetItem = new FacetItemQuery(facetName, (long)this._jsonReader.ReadAsInt32());
this._jsonReader.Read();// Closes count property
// Subfacets
if (this._jsonReader.TokenType != JsonToken.EndObject)
{
this.GetFacetItems(
initialPath,
facetParameter.Facets.ToList(),
out var facetItems);
((FacetItemQuery)facetItem).Facets = facetItems;
}
}
else // Facet field or facet range
{
var facetRangeParameter = facetParameter as IFacetRangeParameter <TDocument>;
this._jsonReader.Read();// Closes buckets property
if (facetRangeParameter != null)
{
var fieldType = facetRangeParameter
.ExpressionBuilder
.GetPropertyType(facetRangeParameter.FieldExpression);
facetItem = new FacetItemRange(facetName);
this.ProcessFacetRangeBuckets(root, facetRangeParameter, facetName, facetItem, fieldType);
}
else
{
facetItem = new FacetItemField(facetName);
this.ProcessFacetFieldBuckets(root, facetParameter, facetName, facetItem);
}
}
// Closes facet item object
while (!this._jsonReader.Path.Equals($"{root}.{facetName}") && this._jsonReader.TokenType != JsonToken.EndObject)
{
this._jsonReader.Read();
}
return(facetItem);
}
/// <summary>
/// Execute processing facet queries
/// </summary>
private static IEnumerable <FacetItemQuery> ProcessFacetQueries(JsonReader jsonReader)
{
var facetItemQueries = new List <FacetItemQuery>();
jsonReader.Read(); // Start object
jsonReader.Read(); // Start property name
while (jsonReader.TokenType != JsonToken.EndObject)
{
var facetItem = new FacetItemQuery(
(string)jsonReader.Value,
(long)jsonReader.ReadAsInt32());
facetItemQueries.Add(facetItem);
jsonReader.Read();
}
return(facetItemQueries.ToArray());
}
