Create_func_arg0 Class Reference

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Public Member Functions
virtual Item *	create_func (THD *thd, LEX_STRING name, List< Item > *item_list)
virtual Item *	create (THD *thd)=0

Protected Member Functions
	Create_func_arg0 ()
virtual	~Create_func_arg0 ()
Protected Member Functions inherited from Create_func
	Create_func ()
virtual	~Create_func ()

Detailed Description

Adapter for functions that takes exactly zero arguments.

Definition at line 78 of file item_create.cc.

Constructor & Destructor Documentation

Create_func_arg0::Create_func_arg0 ( )

inlineprotected

Constructor.

Definition at line 92 of file item_create.cc.

virtual Create_func_arg0::~Create_func_arg0 ( )

inlineprotectedvirtual

Destructor.

Definition at line 94 of file item_create.cc.

Member Function Documentation

virtual Item* Create_func_arg0::create ( THD *  thd )

pure virtual

Builder method, with no arguments.

Parameters

thd	The current thread

Returns

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.

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Item * Create_func_arg0::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

thd	The current thread
name	The function name
item_list	The list of arguments to the function, can be NULL

Returns

An item representing the parsed function call, or NULL

Implements Create_func.

Definition at line 2890 of file item_create.cc.

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

• sql/item_create.cc