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Create_func_arg0 Class Reference
Inheritance diagram for Create_func_arg0:
Create_func Create_func_connection_id Create_func_found_rows Create_func_pi Create_func_uuid Create_func_uuid_short Create_func_version

List of all members.

Public Member Functions

virtual Itemcreate_func (THD *thd, LEX_STRING name, List< Item > *item_list)
virtual Itemcreate (THD *thd)=0

Protected Member Functions

 Create_func_arg0 ()
virtual ~Create_func_arg0 ()

Detailed Description

Adapter for functions that takes exactly zero arguments.

Constructor & Destructor Documentation

Create_func_arg0::Create_func_arg0 ( ) [inline, protected]


virtual Create_func_arg0::~Create_func_arg0 ( ) [inline, protected, virtual]


Member Function Documentation

virtual Item* Create_func_arg0::create ( THD *  thd) [pure virtual]

Builder method, with no arguments.

thdThe current thread
An item representing the function call

Implemented in Create_func_version, Create_func_uuid_short, Create_func_uuid, Create_func_pi, Create_func_found_rows, and Create_func_connection_id.

Item * Create_func_arg0::create_func ( THD *  thd,
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 thd 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.

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

Implements Create_func.

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