dbuniqueid.h

bonddb 是一个源于PostgreSQL封装包的对象。它是一个由C/C++编写的快速数据提取层应用软件

#ifndef dbuniqueid_h
#define dbuniqueid_h

#include "dbheader.h"
#include "dbwrapper.h"

/* Each individual dbunique id */
struct DbUniqueId
   {
   /* postgresql identifier */
   gint pg_oid;
   /* primary keys, for non-postgresql databases */
   gchar **primarykeys;
   DbField **field;
   gint num;
   };

/* Note: UniqueId's will be negitive if its a new record. */

/* free up stuff */
gint db_id_freeall(Object * obj);
gint db_id_free(DbUniqueId * id);

/* creating the array of unique ids (DbObjectIdIndex) */
gint db_id_createall(Object * obj);

/* kinda private */
DbUniqueId *db_id_createblank();

/* get the unique id from database */
DbUniqueId *db_id_remeber(Object * obj);
DbUniqueId *db_id_remeberbyrow(Object * obj, gint row);

/* get the unique id for a record */
DbUniqueId *db_id_get(Object * obj);
DbUniqueId *db_id_getbyrow(Object * obj, gint row);

/* move to a record based on the unique id */
gint db_id_moveto(Object * obj, DbUniqueId * id);

/* compares to id's */
gint db_id_compare(DbUniqueId * id1, DbUniqueId * id2);

/* create sql component. */
gchar *db_id_createsql(Object * obj, DbUniqueId * id);
gchar *db_id_verifysql(gchar * sql);

/* for doing that low level stuff dealing with uniqueid */
gint db_id_adduniqueid(Object * obj, DbUniqueId * id, gint row);
gint db_id_extractid(Object * obj, DbUniqueId * id, gint row);

/* a bit of validation code for you */
gboolean db_id_isnewrecord(DbUniqueId * id);
gboolean db_id_isvalid(DbUniqueId * id);

/* and a bit of object management in regard of uniqueid's */
gint db_id_syncid(Object * obj);
gint db_id_updateidindex(Object * obj, DbUniqueId * id, gint row);
gint db_id_updatecache(Object * obj);

/* make something empty */
DbUniqueId *db_id_createblank(gchar *tablename);
DbUniqueId *db_uniqueid(DbRecordSet * result);

#endif