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Add the experimental sqlite3_preupdate_hook() API.

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FossilOrigin-Name: 6145d7b89f83500318713779c60f79a7ab2098ba
This commit is contained in:
dan
2011-03-01 18:42:07 +00:00
parent 30f776fadb
commit 46c47d4677
18 changed files with 737 additions and 117 deletions
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13
src/update.c
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@@ -490,9 +490,16 @@ void sqlite3Update(
j1 = sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, regOldRowid);
sqlite3GenerateRowIndexDelete(pParse, pTab, iCur, aRegIdx);
/* If changing the record number, delete the old record. */
if( hasFK || chngRowid ){
sqlite3VdbeAddOp2(v, OP_Delete, iCur, 0);
/* If changing the rowid value, or if there are foreign key constraints
** to process, delete the old record. Otherwise, add a noop OP_Delete
** to invoke the pre-update hook.
*/
sqlite3VdbeAddOp3(v, OP_Delete, iCur,
OPFLAG_ISUPDATE | ((hasFK || chngRowid) ? 0 : OPFLAG_ISNOOP),
regNewRowid
);
if( !pParse->nested ){
sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_STATIC);
}
sqlite3VdbeJumpHere(v, j1);