public T Generate <T>(Type bindingType) where T : class
{
string storedProcedureName;
MethodInfo methodInfo;
CommandType commandType = this.ParsingAttributes(bindingType, out storedProcedureName, out methodInfo);
Type reflectedType = methodInfo.ReflectedType;
ParameterInfo[] parameters = methodInfo.GetParameters();
Type parameterType = methodInfo.ReturnParameter.ParameterType;
Type[] array = new Type[parameters.Length + 1];
array[0] = typeof(string);
for (int i = 0; i < parameters.Length; i++)
{
array[i + 1] = parameters[i].ParameterType;
}
DynamicMethod dynamicMethod = new DynamicMethod(string.Format("{0}.InternalQueryExecute", bindingType.Namespace), parameterType, array, bindingType.Module, true);
ILGenerator ilgenerator = dynamicMethod.GetILGenerator();
LocalBuilder localBuilder = SqlProcedureLinker.NewSqlconnection(ilgenerator);
LocalBuilder localBuilder2 = SqlProcedureLinker.NewSqlCommand(ilgenerator, storedProcedureName, localBuilder);
LocalBuilder sqlParameterCollection = SqlProcedureLinker.InitSqlCommand(ilgenerator, localBuilder2);
LocalBuilder localBuilder3 = SqlProcedureLinker.NewInstance2(ilgenerator, bindingType);
SqlProcedureLinker.BindingParameters(ilgenerator, bindingType, localBuilder3, parameters, sqlParameterCollection);
if (parameterType.Equals(typeof(void)))
{
ilgenerator.Emit(OpCodes.Ldloc, localBuilder2);
ilgenerator.Emit(OpCodes.Call, typeof(SqlCommand).GetMethod("ExecuteNonQuery", Type.EmptyTypes));
ilgenerator.Emit(OpCodes.Pop);
}
else if (parameterType.Equals(bindingType))
{
LocalBuilder localBuilder4 = SqlProcedureLinker.NewSqlDataReader(ilgenerator, localBuilder2);
SqlProcedureLinker.ExecuteReader(ilgenerator, bindingType, localBuilder3, localBuilder4, 0);
ilgenerator.Emit(OpCodes.Ldloc, localBuilder4);
ilgenerator.EmitCall(OpCodes.Call, typeof(SqlDataReader).GetMethod("Close", Type.EmptyTypes), null);
}
else
{
ilgenerator.Emit(OpCodes.Ldloc, localBuilder2);
ilgenerator.Emit(OpCodes.Call, typeof(SqlCommand).GetMethod("ExecuteScalar", Type.EmptyTypes));
ilgenerator.Emit(OpCodes.Unbox_Any, parameterType);
}
SqlProcedureLinker.GettingParameters(ilgenerator, parameters, sqlParameterCollection);
SqlProcedureLinker.GettingReturnValue(ilgenerator, bindingType, localBuilder3, sqlParameterCollection);
ilgenerator.Emit(OpCodes.Ldloc, localBuilder);
ilgenerator.Emit(OpCodes.Call, typeof(SqlConnection).GetMethod("Close"));
if (parameterType.Equals(bindingType))
{
ilgenerator.Emit(OpCodes.Ldloc, localBuilder3);
}
ilgenerator.Emit(OpCodes.Ret);
T t = dynamicMethod.CreateDelegate(reflectedType, this.connectionString) as T;
if (t == null)
{
throw new ArgumentException(string.Format("Generic delegator type-casting occurs error: {0}", typeof(T).Name));
}
return(t);
}
