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Add support for TEMPORARY triggers. Such triggers can write temporary or

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permanent tables. (CVS 926)

FossilOrigin-Name: 58ddd587b0f5d565ae3b0ba3a1fa5c20d459f3fc
This commit is contained in:
drh
2003-04-21 18:48:45 +00:00
parent 881b890af4
commit f0f258b11b
8 changed files with 218 additions and 96 deletions
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16
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.176 2003/04/20 00:00:24 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.177 2003/04/21 18:48:47 drh Exp $
*/
#include "config.h"
#include "sqlite.h"
@@ -832,7 +832,8 @@ struct Parse {
int nSet; /* Number of sets used so far */
int nAgg; /* Number of aggregate expressions */
AggExpr *aAgg; /* An array of aggregate expressions */
TriggerStack *trigStack;
Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
TriggerStack *trigStack; /* Trigger actions being coded */
};
/*
@@ -853,9 +854,9 @@ struct Parse {
struct Trigger {
char *name; /* The name of the trigger */
char *table; /* The table or view to which the trigger applies */
int iDb; /* Database containing this trigger */
int op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
int tr_tm; /* One of TK_BEFORE, TK_AFTER */
u8 iDb; /* Database containing this trigger */
u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
u8 tr_tm; /* One of TK_BEFORE, TK_AFTER */
Expr *pWhen; /* The WHEN clause of the expresion (may be NULL) */
IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger,
the <column-list> is stored here */
@@ -1094,13 +1095,14 @@ int sqliteSafetyOn(sqlite*);
int sqliteSafetyOff(sqlite*);
int sqliteSafetyCheck(sqlite*);
void sqliteChangeCookie(sqlite*, Vdbe*);
void sqliteCreateTrigger(Parse*, Token*, int, int, IdList*, SrcList*,
int, Expr*, TriggerStep*, Token*);
void sqliteBeginTrigger(Parse*, Token*,int,int,IdList*,SrcList*,int,Expr*,int);
void sqliteFinishTrigger(Parse*, TriggerStep*, Token*);
void sqliteDropTrigger(Parse*, SrcList*, int);
int sqliteTriggersExist(Parse* , Trigger* , int , int , int, ExprList*);
int sqliteCodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int,
int, int);
void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
void sqliteDeleteTriggerStep(TriggerStep*);
TriggerStep *sqliteTriggerSelectStep(Select*);
TriggerStep *sqliteTriggerInsertStep(Token*, IdList*, ExprList*, Select*, int);
TriggerStep *sqliteTriggerUpdateStep(Token*, ExprList*, Expr*, int);