Template base class for doing a join by key. More...

#include "rdm_db_query.h"

Inheritance diagram for RDM::DB::QUERY::join_by_key< table_id, key_id, KEY_T, NEXT >:

Collaboration diagram for RDM::DB::QUERY::join_by_key< table_id, key_id, KEY_T, NEXT >:

Public Member Functions
RDM_RETCODE	bind_key (void key_ref1, void key_ref2=NULL, void key_ref3=NULL, void key_ref4=NULL, void key_ref5=NULL, void key_ref6=NULL, void key_ref7=NULL, void key_ref8=NULL, void key_ref9=NULL, void key_ref10=NULL)
	Bind a key. More...

Public Member Functions inherited from RDM::DB::QUERY::join_rows< table_id, NEXT >
	join_rows ()

	~join_rows ()

uint32_t	init_tables_to_write_lock (RDM_TABLE_ID *tables)
	IDs of the tables where rows are inserted. More...

uint32_t	init_tables_to_read_lock (RDM_TABLE_ID *tables)
	IDs of the tables where rows are read. More...

RDM_RETCODE	init (RDM_DB db)
	Initialize this object. More...

void	reset (void)
	Reset this object. More...

RDM_RETCODE	fetch_first ()
	Fetch the first. More...

RDM_RETCODE	fetch_prev ()
	Fetch the previous. More...

RDM_RETCODE	fetch_next ()
	Fetch the next. More...

RDM_RETCODE	fetch_last ()
	Fetch the last. More...

template<class TARGET_ROW_T >
RDM_RETCODE	bind_row (TARGET_ROW_T target_row, bool target_all_columns_null=NULL)
	Bind a row. More...

Protected Member Functions
	join_by_key ()

Additional Inherited Members
Static Public Member Functions inherited from RDM::DB::QUERY::join_rows< table_id, NEXT >
constexpr static int	number_of_tables_to_write_lock (void)
	Number of tables where rows are inserted. More...

constexpr static int	number_of_tables_to_read_lock (void)
	Number of tables where rows are read. More...

Data Fields inherited from RDM::DB::QUERY::join_rows< table_id, NEXT >
NEXT	next

Protected Attributes inherited from RDM::DB::QUERY::join_rows< table_id, NEXT >
RDM_DB	db

RDM_CURSOR	cursor

void *	target_row

uint32_t	target_size

bool *	target_all_columns_null

bool	outer_join

position	pos

Detailed Description

template<RDM_TABLE_ID table_id, RDM_KEY_ID key_id, class KEY_T, class NEXT>
class RDM::DB::QUERY::join_by_key< table_id, key_id, KEY_T, NEXT >

Template base class for doing a join by key.

Don't instantiate this template class directly. Instead, instantiate one of the derived classes inner_join_by_key or outer_join_by_key.

Template Parameters

table_id	The ID of the table we join with. This is one argument of the join.
key_id	The ID of the key we key on
KEY_T	The class type for the key
NEXT	The next class in the chain of classes. This represents one arguments of the join.

Constructor & Destructor Documentation

join_by_key()

template<RDM_TABLE_ID table_id, RDM_KEY_ID key_id, class KEY_T , class NEXT >

RDM::DB::QUERY::join_by_key< table_id, key_id, KEY_T, NEXT >::join_by_key ( )

inlineprotected

587 {}

Member Function Documentation

bind_key()

template<RDM_TABLE_ID table_id, RDM_KEY_ID key_id, class KEY_T , class NEXT >

RDM_RETCODE RDM::DB::QUERY::join_by_key< table_id, key_id, KEY_T, NEXT >::bind_key	(	void *	key_ref1,
		void *	key_ref2 = `NULL`,
		void *	key_ref3 = `NULL`,
		void *	key_ref4 = `NULL`,
		void *	key_ref5 = `NULL`,
		void *	key_ref6 = `NULL`,
		void *	key_ref7 = `NULL`,
		void *	key_ref8 = `NULL`,
		void *	key_ref9 = `NULL`,
		void *	key_ref10 = `NULL`
	)

inline

Bind a key.

Bind a key to key values with corresponding "has_value" wherer applicable. The values can be set to a static value or a value for column of a row (set up using join_rows::bind_row()) for one of the previous classes in the chain.

Parameters

[in]	key_ref1	A reference to the 1st key/has value
[in]	key_ref2	A reference to the 2nd key/has value. NULL if there is no reference.
[in]	key_ref3	A reference to the 3rd key/has value. NULL if there is no reference.
[in]	key_ref4	A reference to the 4th key/has value. NULL if there is no reference.
[in]	key_ref5	A reference to the 5th key/has value. NULL if there is no reference.
[in]	key_ref6	A reference to the 6th key/has value. NULL if there is no reference.
[in]	key_ref7	A reference to the 7th key/has value. NULL if there is no reference.
[in]	key_ref8	A reference to the 8th key/has value. NULL if there is no reference.
[in]	key_ref9	A reference to the 9th key/has value. NULL if there is no reference.
[in]	key_ref10	A reference to the 10th key/has value. NULL if there is no reference.

 {
 this->key_ref1 = key_ref1;
 this->key_ref2 = key_ref2;
 this->key_ref3 = key_ref3;
 this->key_ref4 = key_ref4;
 this->key_ref5 = key_ref5;
 this->key_ref6 = key_ref6;
 this->key_ref7 = key_ref7;
 this->key_ref8 = key_ref8;
 this->key_ref9 = key_ref9;
 this->key_ref10 = key_ref10;

return sOKAY;
 }

References sOKAY.

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

rdm_db_query.h

Public Member Functions

Protected Member Functions