diff options
Diffstat (limited to 'src/sqliteInt.h')
| -rw-r--r-- | src/sqliteInt.h | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h index e8f168204..63610ae8e 100644 --- a/src/sqliteInt.h +++ b/src/sqliteInt.h @@ -11,7 +11,7 @@ ************************************************************************* ** Internal interface definitions for SQLite. ** -** @(#) $Id: sqliteInt.h,v 1.162 2003/02/16 22:21:32 drh Exp $ +** @(#) $Id: sqliteInt.h,v 1.163 2003/03/19 03:14:02 drh Exp $ */ #include "config.h" #include "sqlite.h" @@ -187,6 +187,21 @@ typedef struct Trigger Trigger; typedef struct TriggerStep TriggerStep; typedef struct TriggerStack TriggerStack; typedef struct FKey FKey; +typedef struct Db Db; + +/* +** Each database file to be accessed by the system is an instance +** of the following structure. There are normally two of these structures +** in the sqlite.aDb[] array. aDb[0] is the main database file and +** aDb[1] is the database file used to hold temporary tables. But +** additional databases may be attached to the engine. +*/ +struct Db { + char *zName; /* Name of this database */ + Btree *pBt; /* The B*Tree structure for this database file */ + int schema_cookie; /* Database schema version number for this file */ + u8 inTrans; /* True if a transaction is underway for this backend */ +}; /* ** Each database is an instance of the following structure. @@ -204,14 +219,14 @@ typedef struct FKey FKey; ** text datatypes. */ struct sqlite { - Btree *pBe; /* The B*Tree backend */ - Btree *pBeTemp; /* Backend for session temporary tables */ + int nDb; /* Number of backends currently in use */ + Db *aDb; /* All backends */ + Db aDbStatic[2]; /* Static space for the 2 default backends */ int flags; /* Miscellanous flags. See below */ u8 file_format; /* What file format version is this database? */ u8 safety_level; /* How aggressive at synching data to disk */ u8 want_to_close; /* Close after all VDBEs are deallocated */ - int schema_cookie; /* Magic number that changes with the schema */ - int next_cookie; /* Value of schema_cookie after commit */ + int next_cookie; /* Next value of aDb[0].schema_cookie */ int cache_size; /* Number of pages to use in the cache */ int nTable; /* Number of tables in the database */ void *pBusyArg; /* 1st Argument to the busy callback */ @@ -348,7 +363,7 @@ struct Table { int tnum; /* Root BTree node for this table (see note above) */ Select *pSelect; /* NULL for tables. Points to definition if a view. */ u8 readOnly; /* True if this table should not be written by the user */ - u8 isTemp; /* True if stored in db->pBeTemp instead of db->pBe */ + u8 isTemp; /* Index into sqlite.aDb[] of the backend for this table */ u8 isTransient; /* True if automatically deleted when VDBE finishes */ u8 hasPrimKey; /* True if there exists a primary key */ u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ @@ -731,7 +746,6 @@ struct AggExpr { */ struct Parse { sqlite *db; /* The main database structure */ - Btree *pBe; /* The database backend */ int rc; /* Return code from execution */ sqlite_callback xCallback; /* The callback function */ void *pArg; /* First argument to the callback function */ @@ -1003,6 +1017,8 @@ int sqliteExprAnalyzeAggregates(Parse*, Expr*); Vdbe *sqliteGetVdbe(Parse*); int sqliteRandomByte(void); int sqliteRandomInteger(void); +void sqliteRollbackAll(sqlite*); +void sqliteCodeVerifySchema(Parse*); void sqliteBeginTransaction(Parse*, int); void sqliteCommitTransaction(Parse*); void sqliteRollbackTransaction(Parse*); |