C++ (Cpp) RecordManager::Update示例

示例#1

文件： API.cpp 项目： rockhacker/BeetleDB

void API::Update(SQLUpdate& statement)
{
	if (current_db_.length() == 0) throw NoDatabaseSelectedException();
	Database *db = catalog_m_->GetDB(current_db_);
	if (db == NULL) throw DatabaseNotExistException();

	Table *tb = db->GetTable(statement.get_tb_name());
	if (tb == NULL) throw TableNotExistException();
	
	RecordManager *rm = new RecordManager(catalog_m_, buffer_m_, current_db_);
	rm->Update(statement);
	delete rm;
}

示例#2

文件： API.cpp 项目： XuJing1022/DataBaseProject

/*更新数据*/
void API::Update(SQLUpdate& sql_statement)
{
	if (current_database_.length() == 0)/*判断当前数据库是否选定*/
	{
		throw NoDatabaseSelectedException();
	}
	Database *db = catalog_manager_->GetDB(current_database_);
	if (db == NULL)/*判断当前数据库是否存在*/
	{
		throw DatabaseNotExistException();
	}
	Table *tb = db->GetTable(sql_statement.get_tb_name());
	if (tb == NULL)/*判断数据表是否存在是否存在*/
	{
		throw TableNotExistException();
	}
	RecordManager *rm = new RecordManager(catalog_manager_, buffer_manager_, current_database_);
	rm->Update(sql_statement);
	delete rm;
	//cout << "更新数据" << endl;
}