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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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36
src/main.c
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@@ -14,7 +14,7 @@
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.71 2002/05/10 13:14:07 drh Exp $
** $Id: main.c,v 1.72 2002/05/15 08:30:13 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -326,6 +326,8 @@ sqlite *sqlite_open(const char *zFilename, int mode, char **pzErrMsg){
if( db==0 ) goto no_mem_on_open;
sqliteHashInit(&db->tblHash, SQLITE_HASH_STRING, 0);
sqliteHashInit(&db->idxHash, SQLITE_HASH_STRING, 0);
sqliteHashInit(&db->trigHash, SQLITE_HASH_STRING, 0);
sqliteHashInit(&db->trigDrop, SQLITE_HASH_STRING, 0);
sqliteHashInit(&db->tblDrop, SQLITE_HASH_POINTER, 0);
sqliteHashInit(&db->idxDrop, SQLITE_HASH_POINTER, 0);
sqliteHashInit(&db->aFunc, SQLITE_HASH_STRING, 1);
@@ -383,11 +385,29 @@ no_mem_on_open:
static void clearHashTable(sqlite *db, int preserveTemps){
HashElem *pElem;
Hash temp1;
Hash temp2;
assert( sqliteHashFirst(&db->tblDrop)==0 ); /* There can not be uncommitted */
assert( sqliteHashFirst(&db->idxDrop)==0 ); /* DROP TABLEs or DROP INDEXs */
temp1 = db->tblHash;
sqliteHashInit(&db->tblHash, SQLITE_HASH_STRING, 0);
temp2 = db->trigHash;
sqliteHashInit(&db->trigHash, SQLITE_HASH_STRING, 0);
sqliteHashClear(&db->idxHash);
for (pElem=sqliteHashFirst(&temp2); pElem; pElem=sqliteHashNext(pElem)){
Trigger * pTrigger = sqliteHashData(pElem);
Table *pTab = sqliteFindTable(db, pTrigger->table);
assert(pTab);
if (pTab->isTemp) {
sqliteHashInsert(&db->trigHash, pTrigger->name, strlen(pTrigger->name),
pTrigger);
} else {
sqliteDeleteTrigger(pTrigger);
}
}
sqliteHashClear(&temp2);
sqliteHashInit(&db->tblHash, SQLITE_HASH_STRING, 0);
for(pElem=sqliteHashFirst(&temp1); pElem; pElem=sqliteHashNext(pElem)){
Table *pTab = sqliteHashData(pElem);
if( preserveTemps && pTab->isTemp ){
@@ -413,6 +433,7 @@ static void clearHashTable(sqlite *db, int preserveTemps){
}
}
sqliteHashClear(&temp1);
db->flags &= ~SQLITE_Initialized;
}
@@ -458,6 +479,7 @@ void sqlite_close(sqlite *db){
*/
int sqlite_complete(const char *zSql){
int isComplete = 0;
int seenCreate = 0;
while( *zSql ){
switch( *zSql ){
case ';': {
@@ -501,6 +523,16 @@ int sqlite_complete(const char *zSql){
break;
}
default: {
if (seenCreate && !sqliteStrNICmp(zSql, "trigger", 7))
while (sqliteStrNICmp(zSql, "end", 3))
if (!*++zSql) return 0;
if (!sqliteStrNICmp(zSql, "create", 6)) {
zSql = zSql + 5;
seenCreate = 1;
} else
seenCreate = 0;
isComplete = 0;
break;
}