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Require the INSTEAD OF syntax to create triggers on database views. (CVS 591)

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FossilOrigin-Name: d9e48cd5180e2aae7672b9d54e18c37d0fe5258a
This commit is contained in:
danielk1977
2002-05-26 23:24:40 +00:00
parent 8912d106e1
commit d702fccbce
5 changed files with 78 additions and 18 deletions
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20
src/trigger.c
View File

@@ -20,7 +20,7 @@
void sqliteCreateTrigger(
Parse *pParse, /* The parse context of the CREATE TRIGGER statement */
Token *pName, /* The name of the trigger */
int tr_tm, /* One of TK_BEFORE, TK_AFTER */
int tr_tm, /* One of TK_BEFORE, TK_AFTER , TK_INSTEAD */
int op, /* One of TK_INSERT, TK_UPDATE, TK_DELETE */
IdList *pColumns, /* column list if this is an UPDATE OF trigger */
Token *pTableName, /* The name of the table/view the trigger applies to */
@@ -38,6 +38,9 @@ void sqliteCreateTrigger(
/* Check that:
** 1. the trigger name does not already exist.
** 2. the table (or view) does exist.
** 3. that we are not trying to create a trigger on the sqlite_master table
** 4. That we are not trying to create an INSTEAD OF trigger on a table.
** 5. That we are not trying to create a BEFORE or AFTER trigger on a view.
*/
{
char *tmp_str = sqliteStrNDup(pName->z, pName->n);
@@ -67,6 +70,21 @@ void sqliteCreateTrigger(
pParse->nErr++;
goto trigger_cleanup;
}
if( tab->pSelect && tr_tm != TK_INSTEAD ){
sqliteSetNString(&pParse->zErrMsg, "cannot create ", -1,
(tr_tm == TK_BEFORE)?"BEFORE":"AFTER", -1, " trigger on view: ", -1
, pTableName->z, pTableName->n, 0);
goto trigger_cleanup;
}
if( !tab->pSelect && tr_tm == TK_INSTEAD ){
sqliteSetNString(&pParse->zErrMsg, "cannot create INSTEAD OF", -1,
" trigger on table: ", -1, pTableName->z, pTableName->n, 0);
goto trigger_cleanup;
}
}
if (tr_tm == TK_INSTEAD){
tr_tm = TK_BEFORE;
}
/* Build the Trigger object */