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Create_func_arg3 Class Reference
Inheritance diagram for Create_func_arg3:
Create_func Create_func_conv Create_func_convert_tz Create_func_lpad Create_func_maketime Create_func_rpad Create_func_substr_index Create_func_xml_update

List of all members.

Public Member Functions

virtual Itemcreate_func (THD *thd, LEX_STRING name, List< Item > *item_list)
virtual Itemcreate (THD *thd, Item *arg1, Item *arg2, Item *arg3)=0

Protected Member Functions

 Create_func_arg3 ()
virtual ~Create_func_arg3 ()

Detailed Description

Adapter for functions that takes exactly three arguments.


Constructor & Destructor Documentation

Create_func_arg3::Create_func_arg3 ( ) [inline, protected]

Constructor.

virtual Create_func_arg3::~Create_func_arg3 ( ) [inline, protected, virtual]

Destructor.


Member Function Documentation

virtual Item* Create_func_arg3::create ( THD *  thd,
Item arg1,
Item arg2,
Item arg3 
) [pure virtual]

Builder method, with three arguments.

Parameters:
thdThe current thread
arg1The first argument of the function
arg2The second argument of the function
arg3The third argument of the function
Returns:
An item representing the function call

Implemented in Create_func_xml_update, Create_func_substr_index, Create_func_rpad, Create_func_maketime, Create_func_lpad, Create_func_convert_tz, and Create_func_conv.

Item * Create_func_arg3::create_func ( THD *  thd,
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 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)
Parameters:
thdThe 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 Create_func.


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