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Add RAISE() function, which allows more advanced flow-control in trigger programs (ticket #55) (CVS 614)

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FossilOrigin-Name: d4a2fb10067203a0d49317db747759872e62927e
This commit is contained in:
danielk1977
2002-06-11 02:25:40 +00:00
parent 28f4b6885b
commit 6f34903e85
12 changed files with 256 additions and 42 deletions
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22
src/trigger.c
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@@ -480,14 +480,18 @@ static int codeTriggerProgram(
pParse->trigStack->orconf = orconf;
switch( pTriggerStep->op ){
case TK_SELECT: {
sqliteSelect(pParse, pTriggerStep->pSelect, SRT_Discard, 0, 0, 0, 0);
Select * ss = sqliteSelectDup(pTriggerStep->pSelect);
assert(ss);
assert(ss->pSrc);
sqliteSelect(pParse, ss, SRT_Discard, 0, 0, 0, 0);
sqliteSelectDelete(ss);
break;
}
case TK_UPDATE: {
sqliteVdbeAddOp(pParse->pVdbe, OP_ListPush, 0, 0);
sqliteUpdate(pParse, &pTriggerStep->target,
sqliteExprListDup(pTriggerStep->pExprList),
sqliteExprDup(pTriggerStep->pWhere), orconf);
sqliteExprListDup(pTriggerStep->pExprList),
sqliteExprDup(pTriggerStep->pWhere), orconf);
sqliteVdbeAddOp(pParse->pVdbe, OP_ListPop, 0, 0);
break;
}
@@ -543,7 +547,8 @@ int sqliteCodeRowTrigger(
Table *pTab, /* The table to code triggers from */
int newIdx, /* The indice of the "new" row to access */
int oldIdx, /* The indice of the "old" row to access */
int orconf /* ON CONFLICT policy */
int orconf, /* ON CONFLICT policy */
int ignoreJump /* Instruction to jump to for RAISE(IGNORE) */
){
Trigger * pTrigger;
TriggerStack * pTriggerStack;
@@ -588,6 +593,7 @@ int sqliteCodeRowTrigger(
pTriggerStack->oldIdx = oldIdx;
pTriggerStack->pTab = pTab;
pTriggerStack->pNext = pParse->trigStack;
pTriggerStack->ignoreJump = ignoreJump;
pParse->trigStack = pTriggerStack;
/* code the WHEN clause */
@@ -735,14 +741,14 @@ void sqliteViewTriggers(
sqliteVdbeAddOp(v, OP_Rewind, newIdx, 0);
sqliteCodeRowTrigger(pParse, TK_UPDATE, pChanges, TK_BEFORE,
pTab, newIdx, oldIdx, orconf);
pTab, newIdx, oldIdx, orconf, endOfLoop);
sqliteCodeRowTrigger(pParse, TK_UPDATE, pChanges, TK_AFTER,
pTab, newIdx, oldIdx, orconf);
pTab, newIdx, oldIdx, orconf, endOfLoop);
}else{
sqliteCodeRowTrigger(pParse, TK_DELETE, 0, TK_BEFORE, pTab, -1, oldIdx,
orconf);
orconf, endOfLoop);
sqliteCodeRowTrigger(pParse, TK_DELETE, 0, TK_AFTER, pTab, -1, oldIdx,
orconf);
orconf, endOfLoop);
}
sqliteVdbeAddOp(v, OP_Next, oldIdx, startOfLoop);