public static IServiceCollection AddQuery <TQuery, TQueryResult, TQueryHandler>(this IServiceCollection services)
where TQuery : class
where TQueryHandler : class, IQueryHandler <TQuery, TQueryResult>
{
// add handler to DI.
services.AddTransient <IQueryHandler <TQuery, TQueryResult>, TQueryHandler>();
// add for discovery purposes.
var queryMeta = new QueryMeta(typeof(TQuery), typeof(IQueryHandler <TQuery, TQueryResult>), typeof(TQueryResult));
services.AddSingleton <IQueryMeta>(queryMeta);
return(services);
}
/// <summary>
/// Trying to add meta for pair `sqlSeed`--`query`
/// </summary>
/// <param name="sqlSeed">Object used as seed to builing sql query.</param>
/// <param name="query">Query that will connected to meta data.</param>
/// <returns>Created meta data.</returns>
protected QueryMeta RegisterateSQLQuery(object sqlSeed, Query query)
{
try
{
QueryMeta meta = new QueryMeta()
{
entryQuery = query
};
metaTable.Add(sqlSeed, meta);
return(meta);
}
catch//(Exception ex)
{
// Commented because not all queries has implemented SQLQueryHandler,
// so here will no registration of that query. That will cause a spam messages into console.
//Console.WriteLine("ERROR: SqlQueryHandler | Query not registred." +
// "Details: " + ex.Message);
return(null);
}
}
