drizzled::Create_udf_func Class Reference

#include <create.h>

Inheritance diagram for drizzled::Create_udf_func:

List of all members.

Public Member Functions
virtual Item *	create (Session *, str_ref name, List< Item > *item_list)
Item *	create (Session *, const plugin::Function *fct, List< Item > *item_list)
Static Public Attributes
static Create_udf_func	s_singleton
Protected Member Functions
	Create_udf_func ()

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Detailed Description

Function builder for User Defined Functions.

Definition at line 122 of file create.h.

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Constructor & Destructor Documentation

drizzled::Create_udf_func::Create_udf_func

(

)

[inline, protected]

Constructor.

Definition at line 141 of file create.h.

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Member Function Documentation

Item * drizzled::Create_udf_func::create	(	Session *	,
		str_ref	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:

session	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 drizzled::Create_func.

Definition at line 938 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:

session	The current thread
fct	The User Defined Function metadata
item_list	The list of arguments to the function, can be NULL

Returns:

An item representing the parsed function call

Definition at line 943 of file create.cc.

References drizzled::Item_func::check_argument_count().

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Member Data Documentation

Create_udf_func drizzled::Create_udf_func::s_singleton [static]

Singleton.

Definition at line 137 of file create.h.

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

• drizzled/item/create.h
• drizzled/item/create.cc