query_hash_scan.h File Reference

#include "regu_var.hpp"

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Classes
struct	qfile_tuple_simple_pos
union	hash_scan_value
struct	hash_scan_key
struct	hash_list_scan

Macros
#define	MAKE_TUPLE_POSTION(tuple_pos, simple_pos, scan_id_p)

Typedefs
typedef enum hash_method	HASH_METHOD
typedef struct qfile_tuple_simple_pos	QFILE_TUPLE_SIMPLE_POS
typedef union hash_scan_value	HASH_SCAN_VALUE
typedef struct hash_scan_key	HASH_SCAN_KEY
typedef struct hash_list_scan	HASH_LIST_SCAN

Enumerations
enum	hash_method { HASH_METH_NOT_USE = 0, HASH_METH_IN_MEM = 1, HASH_METH_HYBRID = 2, HASH_METH_HASH_FILE = 3 }

Functions
HASH_SCAN_KEY *	qdata_alloc_hscan_key (THREAD_ENTRY *thread_p, int val_cnt, bool alloc_vals)
HASH_SCAN_VALUE *	qdata_alloc_hscan_value (THREAD_ENTRY *thread_p, QFILE_TUPLE tpl)
HASH_SCAN_VALUE *	qdata_alloc_hscan_value_OID (THREAD_ENTRY *thread_p, QFILE_LIST_SCAN_ID *scan_id_p)
void	qdata_free_hscan_key (THREAD_ENTRY *thread_p, HASH_SCAN_KEY *key, int val_count)
void	qdata_free_hscan_value (THREAD_ENTRY *thread_p, HASH_SCAN_VALUE *value)
int	qdata_free_hscan_entry (const void *key, void *data, void *args)
int	qdata_hscan_key_eq (const void *key1, const void *key2)
int	qdata_build_hscan_key (THREAD_ENTRY *thread_p, val_descr *vd, REGU_VARIABLE_LIST regu_list, HASH_SCAN_KEY *key)
unsigned int	qdata_hash_scan_key (const void *key, unsigned int ht_size)
HASH_SCAN_KEY *	qdata_copy_hscan_key (THREAD_ENTRY *thread_p, HASH_SCAN_KEY *key, REGU_VARIABLE_LIST probe_regu_list, val_descr *vd)
HASH_SCAN_KEY *	qdata_copy_hscan_key_without_alloc (THREAD_ENTRY *thread_p, HASH_SCAN_KEY *key, REGU_VARIABLE_LIST probe_regu_list, HASH_SCAN_KEY *new_key)
int	qdata_print_hash_scan_entry (THREAD_ENTRY *thread_p, FILE *fp, const void *data, void *args)

Macro Definition Documentation

#define MAKE_TUPLE_POSTION	(		tuple_pos,
			simple_pos,
			scan_id_p
	)

Value:

do \
    { \
      tuple_pos.status = scan_id_p->status; \
      tuple_pos.position = S_ON; \
      tuple_pos.vpid = simple_pos->vpid; \
      tuple_pos.offset = simple_pos->offset; \
      tuple_pos.tpl = NULL; \
      tuple_pos.tplno = 0; /* If tplno is needed, add it from scan_build_hash_list_scan() */ \
    } \
  while (0)

Definition at line 32 of file query_hash_scan.h.

Referenced by scan_hash_probe_next().

Typedef Documentation

typedef struct hash_list_scan HASH_LIST_SCAN

Definition at line 81 of file query_hash_scan.h.

typedef enum hash_method HASH_METHOD

Definition at line 52 of file query_hash_scan.h.

typedef struct hash_scan_key HASH_SCAN_KEY

Definition at line 72 of file query_hash_scan.h.

typedef union hash_scan_value HASH_SCAN_VALUE

Definition at line 63 of file query_hash_scan.h.

typedef struct qfile_tuple_simple_pos QFILE_TUPLE_SIMPLE_POS

Definition at line 55 of file query_hash_scan.h.

Enumeration Type Documentation

enum hash_method

Enumerator
HASH_METH_NOT_USE
HASH_METH_IN_MEM
HASH_METH_HYBRID
HASH_METH_HASH_FILE

Definition at line 45 of file query_hash_scan.h.

Function Documentation

HASH_SCAN_KEY* qdata_alloc_hscan_key	(	THREAD_ENTRY *	thread_p,
		int	val_cnt,
		bool	alloc_vals
	)

HASH_SCAN_VALUE* qdata_alloc_hscan_value	(	THREAD_ENTRY *	thread_p,
		QFILE_TUPLE	tpl
	)

HASH_SCAN_VALUE* qdata_alloc_hscan_value_OID	(	THREAD_ENTRY *	thread_p,
		QFILE_LIST_SCAN_ID *	scan_id_p
	)

int qdata_build_hscan_key	(	THREAD_ENTRY *	thread_p,
		val_descr *	vd,
		REGU_VARIABLE_LIST	regu_list,
		HASH_SCAN_KEY *	key
	)

Definition at line 212 of file query_hash_scan.c.

References fetch_peek_dbval(), hash_scan_key::free_values, regu_variable_list_node::next, NO_ERROR, NULL, rc, hash_scan_key::val_count, regu_variable_list_node::value, and hash_scan_key::values.

Referenced by scan_build_hash_list_scan(), and scan_hash_probe_next().

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HASH_SCAN_KEY* qdata_copy_hscan_key	(	THREAD_ENTRY *	thread_p,
		HASH_SCAN_KEY *	key,
		REGU_VARIABLE_LIST	probe_regu_list,
		val_descr *	vd
	)

HASH_SCAN_KEY* qdata_copy_hscan_key_without_alloc	(	THREAD_ENTRY *	thread_p,
		HASH_SCAN_KEY *	key,
		REGU_VARIABLE_LIST	probe_regu_list,
		HASH_SCAN_KEY *	new_key
	)

int qdata_free_hscan_entry	(	const void *	key,
		void *	data,
		void *	args
	)

Definition at line 506 of file query_hash_scan.c.

References NO_ERROR, qdata_free_hscan_key(), and qdata_free_hscan_value().

Referenced by scan_close_scan().

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void qdata_free_hscan_key	(	THREAD_ENTRY *	thread_p,
		HASH_SCAN_KEY *	key,
		int	val_count
	)

void qdata_free_hscan_value	(	THREAD_ENTRY *	thread_p,
		HASH_SCAN_VALUE *	value
	)

unsigned int qdata_hash_scan_key	(	const void *	key,
		unsigned int	ht_size
	)

Definition at line 126 of file query_hash_scan.c.

References i, mht_get_hash_number(), hash_scan_key::val_count, and hash_scan_key::values.

Referenced by scan_open_list_scan().

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int qdata_hscan_key_eq	(	const void *	key1,
		const void *	key2
	)

Definition at line 196 of file query_hash_scan.c.

References DB_EQ, and qdata_hscan_key_compare().

Referenced by scan_open_list_scan().

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int qdata_print_hash_scan_entry	(	THREAD_ENTRY *	thread_p,
		FILE *	fp,
		const void *	data,
		void *	args
	)

Definition at line 246 of file query_hash_scan.c.

References HASH_METH_HYBRID, HASH_METH_IN_MEM, NULL, qfile_tuple_simple_pos::offset, vpid::pageid, hash_scan_value::pos, QFILE_GET_TUPLE_LENGTH, hash_scan_value::tuple, vpid::volid, and qfile_tuple_simple_pos::vpid.

Referenced by scan_close_scan().

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