private int HandleExecuteNonQuery(DbCommand cmd)
{
DataSet db = GetDatabaseForConnectionCore(cmd.Connection);
Func <DataSet, DbCommand, int> handlerMethod = null;
if (cmd.CommandType == CommandType.StoredProcedure)
{
handlerMethod = _handlers.TryResolveProcedureHandlerExec(db, cmd);
}
else
{
// Facade method from accessor? body sql => access method name = > facade method name
}
if (handlerMethod == null)
{
if (handlers_key.TryGetValue(cmd.CommandText, out CommandExecutionHandler handler_key))
{
handlerMethod = StoreLakeDao.TryWrite(handler_key, cmd);
if (handlerMethod == null)
{
throw new NotImplementedException(); // handler is registered for this commandtext but the method cannot be compiled?!?
}
}
else
{
foreach (var handler_text in handlers_text)
{
Func <DataSet, DbCommand, int> x_handlerMethod = StoreLakeDao.TryWrite(handler_text, cmd);
if (x_handlerMethod != null)
{
if (handlerMethod != null)
{
// another handler for the same command text or the command text comparer is not unique enough
throw new InvalidOperationException("Multiple handlers found for Command (" + cmd.Parameters.Count + "):" + cmd.CommandText);
}
handlerMethod = x_handlerMethod;
}
else
{
// this handler does not handles this command text
}
}
}
}
if (handlerMethod != null)
{
int res = handlerMethod(db, cmd);
return(res);
}
throw new NotImplementedException("SQL (" + cmd.Parameters.Count + "):" + cmd.CommandText);
}
private static TypedMethodHandler TryUseHandlerMethod(Type accessorType, Type methodOwner, System.Reflection.MethodInfo mi)
{
System.Reflection.MethodInfo accessor_method = accessorType.GetMethod(mi.Name);
if (accessor_method == null)
{
//return null; // this Handle Method does not handle accessor's method;
throw new InvalidOperationException("Access method '" + mi.Name + "' on type '" + accessorType.Name + "' could not be found.");
}
var prms = mi.GetParameters();
if (prms.Length == 0)
{
return(null);
}
var prm0 = prms[0];
IComparable handlerCommandText = StoreLakeDao.TryGetCommandText(methodOwner, mi.Name);
if (handlerCommandText == null)
{
// no command handler here. try an accessor type - (from attribute?)?
handlerCommandText = StoreLakeDao.TryGetCommandText(accessorType, mi.Name);
if (handlerCommandText == null)
{
//System.Reflection.MethodInfo accessor_method_x = accessorType.GetMethod(mi.Name);
//if (accessor_method == null)
//{
// return null;
//}
throw new InvalidOperationException(TypedMethodHandler.BuildMismatchMethodExpectionText(mi, accessor_method, "CommandText field '" + mi.Name + "CommandText' could not be found."));
}
}
var handler = new TypedMethodHandler(mi, false, handlerCommandText);
if (handler.ValidateReadMethodX(accessor_method))
{
return(handler);
}
return(null);
}
public void RegisterAddedCommandHandlerContract(DataSet db, Type contractType, Type implementationType)
{
//foreach (Type contractType in contracts)
{
//Type implementationType = db.GetCommandExecuteHandlerTypeForContract(contractType);
if (!contractType.IsAssignableFrom(implementationType))
{
throw new InvalidOperationException("Handler type does not match registered contract type. Expected:" + contractType.AssemblyQualifiedName + ", Actual:" + implementationType.AssemblyQualifiedName);
}
//string schemaName = db.GetCommandExecuteHandlerSchemaForContract(contractType);
string schemaName = string.IsNullOrEmpty(db.Namespace) ? "dbo" : db.Namespace;
Type methodOwner = contractType;
foreach (var mi in implementationType.GetMethods())
{
if (mi.DeclaringType == typeof(object))
{
// skip
}
else
{
IComparable handlerCommandText = StoreLakeDao.TryGetCommandText(methodOwner, mi.Name);
bool isProcedureHandler = false;
if (handlerCommandText == null)
{
isProcedureHandler = true;
handlerCommandText = '[' + schemaName + "].[" + mi.Name + ']'; // procedure name
}
var handler = new TypedMethodHandler(mi, isProcedureHandler, handlerCommandText);
if (handler.ValidateReadMethodX(mi))
{
RegisterCommandExecutionHandler(handler);
}
}
}
}
}
internal override IComparable RetrieveCommandText()
{
IComparable handlerCommandText = StoreLakeDao.GetCommandTextImpl(this.CommandTextOwner, this._handlerMethodName); // or Invoker
return(handlerCommandText);
}
private DbDataReader HandleExecuteDbDataReader(DbCommand cmd, System.Data.CommandBehavior cb)
{
string databaseName = cmd.Connection.Database;
if (string.IsNullOrEmpty(databaseName) && _dbs.Count == 1)
{
databaseName = _dbs.Keys.ElementAt(0);
}
if (!_dbs.TryGetValue(databaseName, out DataSet db))
//if (!string.Equals(_db.DataSetName, databaseName, StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException("Unknown datatabase [" + databaseName + "]");
}
string cmd_CommandText = cmd.CommandText;
if (cmd.CommandType == CommandType.StoredProcedure)
{
//int indexOf_SchemaSeparator = cmd_CommandText.IndexOf('.');
//if (indexOf_SchemaSeparator < 0)
//{
// // no schema at all
//}
//string schemaName = cmd_CommandText.Substring(0, indexOf_SchemaSeparator);
//string procedureName = cmd_CommandText.Substring(indexOf_SchemaSeparator + 1);
//if (schemaName[0] != '[' || procedureName[0] != '[')
//{
// if (schemaName[0] != '[')
// schemaName = '[' + schemaName + ']';
// if (procedureName[0] != '[')
// procedureName = '[' + procedureName + ']';
//
// cmd_CommandText = schemaName + "." + procedureName;
//}
}
Func <DataSet, DbCommand, DbDataReader> handlerMethod = null;
if (cmd.CommandType == CommandType.StoredProcedure)
{
handlerMethod = _handlers.TryResolveProcedureHandlerRead(db, cmd);
}
else
{
// Facade method from accessor? body sql => access method name = > facade method name
}
if (handlerMethod == null)
{
if (handlers_key.TryGetValue(cmd.CommandText, out CommandExecutionHandler handler_key))
{
if (!handler_key.HasCompiledMethodRead())
{
handlerMethod = handler_key.DoCompileReadMethod();
handler_key.SetCompiledReadMethod(handlerMethod);
}
else
{
handlerMethod = handler_key.CompiledReadMethod();
}
//handlerMethod = StoreLakeDao.TryRead(handler_key, cmd_CommandText);
if (handlerMethod == null)
{
throw new NotImplementedException(); // handler is registered for this commandtext but the method cannot be compiled?!?
}
}
else
{
foreach (var handler_text in handlers_text)
{
Func <DataSet, DbCommand, DbDataReader> x_handlerMethod = StoreLakeDao.TryRead(handler_text, cmd);
if (x_handlerMethod != null)
{
if (handlerMethod != null)
{
// another handler for the same command text or the command text comparer is not unique enough
throw new InvalidOperationException("Multiple handlers found for Command (" + cmd.Parameters.Count + "):" + cmd.CommandText);
}
handlerMethod = x_handlerMethod;
}
else
{
// this handler does not handles this command text
}
}
}
}
if (handlerMethod != null)
{
DbDataReader res = handlerMethod(db, cmd);
return(res);
}
throw new NotImplementedException("SQL (" + cmd.Parameters.Count + "):" + cmd.CommandText);
}
