/// <summary>
/// Builds the mongo-style query string to be run against the backend.
/// </summary>
/// <param name="query">LINQ-style query that can be used to filter delete results.</param>
/// <param name="visitorClause">Enum to filter LINQ clauses which should be used in a query for network request.</param>
/// <returns>The mongo-style query string.</returns>
private static string GetQuery <T>(IQueryable <object> query, VisitorClause visitorClause)
{
if (query != null)
{
StringQueryBuilder queryBuilder = new StringQueryBuilder();
KinveyQueryVisitor visitor = new KinveyQueryVisitor(queryBuilder, typeof(T), visitorClause);
QueryModel queryModel = (query.Provider as KinveyQueryProvider)?.qm;
queryBuilder.Write("{");
queryModel?.Accept(visitor);
queryBuilder.Write("}");
string mongoQuery = queryBuilder.BuildQueryString();
return(mongoQuery);
}
return(default(string));
}
internal KinveyQueryVisitor(Type type, VisitorClause visitorClause) : this(new StringQueryBuilder(), type, visitorClause)
{
}
internal KinveyQueryVisitor(IQueryBuilder builder, Type type, VisitorClause visitorClause)
{
builderMongoQuery = builder;
clause = visitorClause;
LoadMapOfKeysForType(type);
}
