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Added FOR EACH ROW triggers functionality (CVS 562)

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FossilOrigin-Name: 794bf67b6b36fce8854d5daff12f21dbb943240c
This commit is contained in:
danielk1977
2002-05-15 08:30:12 +00:00
parent 9456bcc975
commit c3f9bad209
18 changed files with 2239 additions and 125 deletions
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49
src/vdbe.c
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@@ -30,7 +30,7 @@
** But other routines are also provided to help in building up
** a program instruction by instruction.
**
** $Id: vdbe.c,v 1.141 2002/05/10 13:14:07 drh Exp $
** $Id: vdbe.c,v 1.142 2002/05/15 08:30:14 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -249,6 +249,9 @@ struct Vdbe {
int nCallback; /* Number of callbacks invoked so far */
int iLimit; /* Limit on the number of callbacks remaining */
int iOffset; /* Offset before beginning to do callbacks */
int keylistStackDepth;
Keylist ** keylistStack;
};
/*
@@ -999,6 +1002,15 @@ static void Cleanup(Vdbe *p){
sqliteFree(p->aSet);
p->aSet = 0;
p->nSet = 0;
if (p->keylistStackDepth > 0) {
int ii;
for (ii = 0; ii < p->keylistStackDepth; ii++) {
KeylistFree(p->keylistStack[ii]);
}
sqliteFree(p->keylistStack);
p->keylistStackDepth = 0;
p->keylistStack = 0;
}
}
/*
@@ -1062,7 +1074,7 @@ static char *zOpName[] = { 0,
"Le", "Gt", "Ge", "IsNull",
"NotNull", "Negative", "And", "Or",
"Not", "Concat", "Noop", "Function",
"Limit",
"Limit", "PushList", "PopList",
};
/*
@@ -4539,6 +4551,39 @@ case OP_SetFound: {
break;
}
/* Opcode: PushList * * *
**
** Save the current Vdbe list such that it can be restored by a PopList
** opcode. The list is empty after this is executed.
*/
case OP_PushList: {
p->keylistStackDepth++;
assert(p->keylistStackDepth > 0);
p->keylistStack = sqliteRealloc(p->keylistStack,
sizeof(Keylist *) * p->keylistStackDepth);
p->keylistStack[p->keylistStackDepth - 1] = p->pList;
p->pList = 0;
break;
}
/* Opcode: PopList * * *
**
** Restore the Vdbe list to the state it was in when PushList was last
** executed.
*/
case OP_PopList: {
assert(p->keylistStackDepth > 0);
p->keylistStackDepth--;
KeylistFree(p->pList);
p->pList = p->keylistStack[p->keylistStackDepth];
p->keylistStack[p->keylistStackDepth] = 0;
if (p->keylistStackDepth == 0) {
sqliteFree(p->keylistStack);
p->keylistStack = 0;
}
break;
}
/* Opcode: SetNotFound P1 P2 *
**
** Pop the stack once and compare the value popped off with the