/// <summary>
/// Parse a SearchSuggestion and its model.
/// </summary>
/// <param name="reader">The JSON reader.</param>
/// <param name="typeToConvert">The type to parse into.</param>
/// <param name="options">Serialization options.</param>
/// <returns>The deserialized suggestion.</returns>
public override SearchSuggestion <T> Read(
ref Utf8JsonReader reader,
Type typeToConvert,
JsonSerializerOptions options)
{
Debug.Assert(options != null);
SearchSuggestion <T> suggestion = new SearchSuggestion <T>();
// Clone the reader so we can get the search text property without
// advancing the reader over any properties needed to deserialize
// the user's model type.
Utf8JsonReader clone = reader;
clone.Expects(JsonTokenType.StartObject);
while (clone.Read() && clone.TokenType != JsonTokenType.EndObject)
{
string name = clone.ExpectsPropertyName();
if (name == Constants.SearchTextKey)
{
suggestion.Text = clone.ExpectsString();
break;
}
}
// Deserialize the model
T document = JsonSerializer.Deserialize <T>(ref reader, options);
suggestion.Document = document;
return(suggestion);
}
/// <summary>
/// Parse the SearchResults and its search results.
/// </summary>
/// <param name="reader">The JSON reader.</param>
/// <param name="typeToConvert">The type to parse into.</param>
/// <param name="options">Serialization options.</param>
/// <returns>The deserialized search results.</returns>
public override SearchResults <T> Read(
ref Utf8JsonReader reader,
Type typeToConvert,
JsonSerializerOptions options)
{
Debug.Assert(typeToConvert != null);
Debug.Assert(typeToConvert.IsAssignableFrom(typeof(SearchResults <T>)));
Debug.Assert(options != null);
SearchResults <T> results = new SearchResults <T>();
reader.Expects(JsonTokenType.StartObject);
while (reader.Read() && reader.TokenType != JsonTokenType.EndObject)
{
switch (reader.ExpectsPropertyName())
{
case Constants.ODataCountKey:
results.TotalCount = reader.ExpectsNullableLong();
break;
case Constants.SearchCoverageKey:
results.Coverage = reader.ExpectsNullableDouble();
break;
case Constants.SearchFacetsKey:
ReadFacets(ref reader, results, options);
break;
case Constants.ODataNextLinkKey:
results.NextUri = new Uri(reader.ExpectsString());
break;
case Constants.SearchNextPageKey:
results.NextOptions = ReadNextPageOptions(ref reader);
break;
case Constants.ValueKey:
reader.Expects(JsonTokenType.StartArray);
while (reader.Read() && reader.TokenType != JsonTokenType.EndArray)
{
SearchResult <T> result = _resultConverter.Read(ref reader, _resultType, options);
results.Values.Add(result);
}
break;
default:
// Ignore other properties (including OData context, etc.)
reader.Skip();
break;
}
}
return(results);
}
/// <summary>
/// Read the @search.highlights property value.
/// </summary>
/// <param name="reader">The JSON reader.</param>
/// <param name="result">The SearchResult to add the highlights to.</param>
private static void ReadHighlights(ref Utf8JsonReader reader, SearchResult <T> result)
{
Debug.Assert(result != null);
result.Highlights = new Dictionary <string, IList <string> >();
reader.Expects(JsonTokenType.StartObject);
while (reader.Read() && reader.TokenType != JsonTokenType.EndObject)
{
// Get the highlight field name
string name = reader.ExpectsPropertyName();
// Get the highlight values
List <string> values = new List <string>();
reader.Expects(JsonTokenType.StartArray);
while (reader.Read() && reader.TokenType != JsonTokenType.EndArray)
{
values.Add(reader.ExpectsString());
}
// Add the highlight
result.Highlights[name] = values;
}
}
