#include "que0que.h"
#include "rem0cmp.h"
#include "pars0grm.h"

Include dependency graph for eval0eval.ic:

This graph shows which files directly or indirectly include this file:

Functions
UNIV_INTERN void	eval_func (func_node_t *func_node)
UNIV_INTERN byte *	eval_node_alloc_val_buf (que_node_t *node, ulint size)
UNIV_INLINE byte *	eval_node_ensure_val_buf (que_node_t *node, ulint size)
UNIV_INLINE void	eval_sym (sym_node_t *sym_node)
UNIV_INLINE void	eval_exp (que_node_t *exp_node)
UNIV_INLINE void	eval_node_set_int_val (que_node_t *node, lint val)
UNIV_INLINE lint	eval_node_get_int_val (que_node_t *node)
UNIV_INLINE ibool	eval_node_get_ibool_val (que_node_t *node)
UNIV_INLINE void	eval_node_set_ibool_val (func_node_t *func_node, ibool val)
UNIV_INLINE void	eval_node_copy_and_alloc_val (que_node_t node, const byte str, ulint len)
UNIV_INLINE void	eval_node_copy_val (que_node_t node1, que_node_t node2)

Detailed Description

SQL evaluator: evaluates simple data structures, like expressions, in a query graph

Created 12/29/1997 Heikki Tuuri

Function Documentation

UNIV_INLINE void eval_exp ( que_node_t * exp_node )

Evaluates an expression.

Parameters

exp_node in: expression

UNIV_INTERN void eval_func ( func_node_t * func_node )

Evaluates a function node. in: function node

UNIV_INTERN byte* eval_node_alloc_val_buf	(	que_node_t *	node,
		ulint	size
	)

Allocate a buffer from global dynamic memory for a value of a que_node. NOTE that this memory must be explicitly freed when the query graph is freed. If the node already has allocated buffer, that buffer is freed here. NOTE that this is the only function where dynamic memory should be allocated for a query node val field.

Returns: pointer to allocated buffer in: buffer size

Parameters

node	in: query graph node; sets the val field data field to point to the new buffer, and len field equal to size

UNIV_INLINE void eval_node_copy_and_alloc_val	(	que_node_t *	node,
		const byte *	str,
		ulint	len
	)

Copies a binary string value as the value of a query graph node. Allocates a new buffer if necessary.

Parameters

node	in: query graph node
str	in: binary string
len	in: string length or UNIV_SQL_NULL

UNIV_INLINE void eval_node_copy_val	(	que_node_t *	node1,
		que_node_t *	node2
	)

Copies a query node value to another node.

Parameters

node1	in: node to copy to
node2	in: node to copy from

UNIV_INLINE byte* eval_node_ensure_val_buf	(	que_node_t *	node,
		ulint	size
	)

Allocates a new buffer if needed.

Returns: pointer to buffer

Parameters

node	in: query graph node; sets the val field data field to point to the new buffer, and len field equal to size
size	in: buffer size

UNIV_INLINE ibool eval_node_get_ibool_val ( que_node_t * node )

Gets a iboolean value from a query node.

Returns: iboolean value

Parameters

node	in: query graph node

UNIV_INLINE lint eval_node_get_int_val ( que_node_t * node )

Gets an integer non-SQL null value from an expression node.

Returns: integer value

Parameters

node	in: expression node

UNIV_INLINE void eval_node_set_ibool_val	(	func_node_t *	func_node,
		ibool	val
	)

Sets a iboolean value as the value of a function node.

Parameters

func_node	in: function node
val	in: value to set

UNIV_INLINE void eval_node_set_int_val	(	que_node_t *	node,
		lint	val
	)

Sets an integer value as the value of an expression node.

Parameters

node	in: expression node
val	in: value to set

UNIV_INLINE void eval_sym ( sym_node_t * sym_node )

Evaluates a symbol table symbol.

Parameters

sym_node in: symbol table node

Functions

Detailed Description

Function Documentation