added basic support for making migrations

src/model.cpp

@@ -33,6 +33,7 @@
  */
 
 #include "model.h"
+#include "utf8/utf8.h"
 
 
 namespace morm
@@ -177,6 +178,68 @@ bool Model::found()
 }
 
 
+void Model::get_table_name(PT::WTextStream & stream, bool with_schema_name, ModelData * model_data, bool clear_stream)
+{
+	if( clear_stream )
+	{
+		stream.clear();
+	}
+
+	ModelEnv model_env_local;
+	model_env = &model_env_local;
+	model_env->model_data = model_data;
+
+	if( model_connector )
+	{
+		DbConnector * db_connector = model_connector->get_db_connector();
+
+		if( db_connector )
+		{
+			try
+			{
+				table();
+
+				if( with_schema_name && !model_env->schema_name.empty() )
+				{
+					stream << model_env->schema_name;
+					stream << '.';
+				}
+
+				stream << model_env->table_name;
+			}
+			catch(...)
+			{
+				model_env = nullptr;
+				throw;
+			}
+		}
+	}
+
+	model_env = nullptr;
+}
+
+
+void Model::get_table_name(std::wstring & str, bool with_schema_name, ModelData * model_data, bool clear_string)
+{
+	PT::WTextStream stream;
+
+	if( clear_string )
+		str.clear();
+
+	get_table_name(stream, with_schema_name, model_data, false);
+	stream.to_string(str);
+}
+
+
+void Model::get_table_name(std::string & str, bool with_schema_name, ModelData * model_data, bool clear_string)
+{
+	PT::WTextStream stream;
+
+	get_table_name(stream, with_schema_name, model_data, false);
+	PT::WideStreamToUTF8(stream, str, clear_string);
+}
+
+
 void Model::to_text(PT::TextStream & stream, ModelData * model_data, bool clear_stream, bool dump_mode)
 {
 	if( clear_stream )
@@ -272,6 +335,7 @@ std::string Model::to_string()
 
 
 
+
 void Model::generate_insert_query(PT::TextStream & stream, ModelData * model_data)
 {
 	ModelEnv model_env_local;
@@ -797,6 +861,10 @@ void Model::clear()
 
 
 
+bool Model::do_migration(int & current_table_version)
+{
+	return true;
+}
 
 
 
@@ -1449,5 +1517,50 @@ void Model::set_parent_key_in_childs()
 	}
 }
 
+
+
+bool Model::db_query(const char * raw_sql)
+{
+	bool status = false;
+
+	if( model_connector )
+	{
+		DbConnector * db_connector = model_connector->get_db_connector();
+
+		if( db_connector )
+		{
+			status = db_connector->query(raw_sql);
+		}
+	}
+
+	return status;
+}
+
+
+bool Model::db_query(const std::string & raw_sql)
+{
+	return db_query(raw_sql.c_str());
+}
+
+
+bool Model::db_query(const PT::TextStream & raw_sql)
+{
+	bool status = false;
+
+	if( model_connector )
+	{
+		DbConnector * db_connector = model_connector->get_db_connector();
+
+		if( db_connector )
+		{
+			status = db_connector->query(raw_sql);
+		}
+	}
+
+	return status;
+}
+
+
+
 } // namespace