Drizzled Public API Documentation

drizzled::Create_udf_func Class Reference

#include <create.h>

Inheritance diagram for drizzled::Create_udf_func:
drizzled::Create_func

List of all members.

Public Member Functions

virtual Itemcreate (Session *session, LEX_STRING name, List< Item > *item_list)
Itemcreate (Session *session, const plugin::Function *fct, List< Item > *item_list)

Static Public Attributes

static Create_udf_func s_singleton

Protected Member Functions

 Create_udf_func ()
virtual ~Create_udf_func ()

Detailed Description

Function builder for User Defined Functions.

Definition at line 133 of file create.h.


Constructor & Destructor Documentation

Constructor.

Definition at line 154 of file create.h.

virtual drizzled::Create_udf_func::~Create_udf_func ( ) [inline, protected, virtual]

Destructor.

Definition at line 156 of file create.h.


Member Function Documentation

Item * drizzled::Create_udf_func::create ( Session session,
LEX_STRING  name,
List< Item > *  item_list 
) [virtual]

The builder create method. Given the function name and list or arguments, this method creates an Item that represents the function call. In case or errors, a NULL item is returned, and an error is reported. Note that the session object may be modified by the builder. In particular, the following members/methods can be set/called, depending on the function called and the function possible side effects.

  • session->lex().binlog_row_based_if_mixed
  • session->lex().current_context()
  • session->lex().safe_to_cache_query
  • session->lex().uncacheable(UNCACHEABLE_SIDEEFFECT)
  • session->lex().uncacheable(UNCACHEABLE_RAND)
  • session->lex().add_time_zone_tables_to_query_tables(session)
Parameters:
sessionThe current thread
nameThe function name
item_listThe list of arguments to the function, can be NULL
Returns:
An item representing the parsed function call, or NULL

Implements drizzled::Create_func.

Definition at line 1071 of file create.cc.

Item * drizzled::Create_udf_func::create ( Session session,
const plugin::Function fct,
List< Item > *  item_list 
)

The builder create method, for User Defined Functions.

Parameters:
sessionThe current thread
fctThe User Defined Function metadata
item_listThe list of arguments to the function, can be NULL
Returns:
An item representing the parsed function call

Definition at line 1080 of file create.cc.

References drizzled::Item_func::check_argument_count(), and drizzled::Session::mem_root.


Member Data Documentation

Singleton.

Definition at line 150 of file create.h.


The documentation for this class was generated from the following files: