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SQLamarr
The stand-alone ultra-fast simulation option for the LHCb experiment
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SQLamarr
The stand-alone ultra-fast simulation option for the LHCb experiment
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Interface to dynamically linked generative parametrizations. More...
#include <Plugin.h>
Classes | |
| class | Plugin |
| Wrap an external function as defined in a compiled shared library. More... | |
Public Member Functions | |
| Plugin (SQLite3DB &db, const std::string &library, const std::string &function_name, const std::string &select_query, const std::string &output_table, const std::vector< std::string > outputs, const std::vector< std::string > reference_keys={"ref_id"}) | |
| Constructor. More... | |
 Public Member Functions inherited from SQLamarr::BasePlugin | |
| BasePlugin (SQLite3DB &db, const std::string &library, const std::string &function_name, const std::string &select_query, const std::string &output_table, const std::vector< std::string > outputs, const std::vector< std::string > reference_keys={"ref_id"}) | |
| Constructor. More... | |
| BasePlugin (BasePlugin &)=delete | |
| virtual | ~BasePlugin () |
| void | execute () override |
| Execute the external function and copies the output in a new table. More... | |
| Public Member Functions inherited from SQLamarr::BaseSqlInterface | |
| BaseSqlInterface (SQLite3DB &db) | |
| Constructor, acquiring the database without ownership. More... | |
| virtual | ~BaseSqlInterface () |
Public Attributes | |
| argtypes | |
| restype | |
Additional Inherited Members | |
| Protected Member Functions inherited from SQLamarr::BasePlugin | |
| template<typename Func_t > | |
| Func_t | load_func (const std::string &fname) |
| Load a generic-typed function from an external library. More... | |
| Protected Member Functions inherited from SQLamarr::BaseSqlInterface | |
| sqlite3_stmt * | get_statement (const std::string &name, const std::string &query) |
| Creates or retrieve from cache a statement. More... | |
| void | begin_transaction () |
Begin an SQL transaction stopping update to disk util end_transaction() is issued More... | |
| void | end_transaction () |
| End an SQL transaction re-enabling disk updates. More... | |
| int | last_insert_row () |
| Return the index of the last rows inserted in any table. More... | |
| void | using_sql_function (const std::string &name, int argc, void(*xFunc)(sqlite3_context *, int, sqlite3_value **)) |
| Register a static function in DB, enabling usage from SQL. More... | |
| bool | exec_stmt (sqlite3_stmt *) |
| Execute a statement, possibly throwing an exception on failure. More... | |
| Protected Attributes inherited from SQLamarr::BaseSqlInterface | |
| SQLite3DB & | m_database |
| Reference to the SQLite database (not owned). More... | |
Interface to dynamically linked generative parametrizations.
A SQLamarr::Plugin is a parametrization defined in a shared object dynamically linked at run time.
Plugin specialize the BasePlugin class to parametrizations taking as an input one or more normally distributed random features. These additional random features are usually injected at some point of the pipeline generating random features according to a pdf conditioned by the features.
As for the all classes inheriting from BasePlugin class, Plugin takes care of selecting the input columns from the database, links the external ibrary based on its path and the name of the function and finally creates a table with the output.
If a table with the same name as the output table exists in the database, it is overwritten without warning.
In order to match the output table to the input, one or more integer variables can be defined as reference keys which are not used as inputs for the parametrization, but transparently copied to the output table.
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inline |
Constructor.
| db | Reference to the database, passed without ownership |
| library | Path to the shared object (library). If in CWD, prepend "./". |
| function_name | Linking symbol of the target function as set at compile-time |
| select_query | SQL Query selecting the inputs. Number and order of the parameters columns are relevant. Names not listed in `reference_keys` are ignored. |
| output_table | SQL name of the output table. Must be alphanumeric. |
| outputs | Vector of column names for the output table. The order must match the output produced by the compiled parametrization. |
| reference_keys | List of column names ignored. |
1.9.1