C++ (Cpp) RecordManager::Select示例

void API::Select(SQLSelect& statement)
{
	if (current_db_.length() == 0) throw NoDatabaseSelectedException();
	Table *tb = catalog_m_->GetDB(current_db_)->GetTable(statement.get_tb_name());
	if (tb == NULL) throw TableNotExistException();
	
	RecordManager *rm = new RecordManager(catalog_m_, buffer_m_, current_db_);
	rm->Select(statement);
	delete rm;
}

示例#2

显示文件

文件： API.cpp 项目： XuJing1022/DataBaseProject

/*查询数据*/
void API::Select(SQLSelect& sql_statement)
{
	if (current_database_.length() == 0)/*判断当前数据库是否选定*/
	{
		throw NoDatabaseSelectedException();
	}
	Table *tb = catalog_manager_->GetDB(current_database_)->GetTable(sql_statement.get_tb_name());
	if (tb == NULL)/*判断当前表是否存在*/
	{
		throw TableNotExistException();
	}
	RecordManager *rm = new RecordManager(catalog_manager_, buffer_manager_, current_database_);
	vector<vector<TKey>>result;
	result = rm->Select(sql_statement);
	delete rm;
	//cout << "查询数据" << endl;
}