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Add code to invoke the xDestroy method of a virtual table when it is dropped. (CVS 3218)

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FossilOrigin-Name: f0c7c8d12c04376e48c6d53a29cfae3fa13b52cf
This commit is contained in:
danielk1977
2006-06-12 16:01:21 +00:00
parent cdb36b7dc9
commit 9e39ce87cf
7 changed files with 76 additions and 25 deletions
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31
src/vtab.c
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@@ -11,7 +11,7 @@
*************************************************************************
** This file contains code used to help implement virtual tables.
**
** $Id: vtab.c,v 1.4 2006/06/12 12:08:45 danielk1977 Exp $
** $Id: vtab.c,v 1.5 2006/06/12 16:01:22 danielk1977 Exp $
*/
#ifndef SQLITE_OMIT_VIRTUALTABLE
#include "sqliteInt.h"
@@ -373,4 +373,33 @@ int sqlite3VtabCallCreate(sqlite3 *db, int iDb, const char *zTab, char **pzErr){
return rc;
}
/*
** This function is invoked by the vdbe to call the xDestroy method
** of the virtual table named zTab in database iDb. This occurs
** when a DROP TABLE is mentioned.
**
** This call is a no-op if zTab is not a virtual table.
*/
int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab)
{
int rc = SQLITE_OK;
Table *pTab;
sqlite3_module *pModule;
pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName);
pModule = pTab->pModule;
assert(pTab);
if( pTab->pVtab ){
rc = sqlite3SafetyOff(db);
assert( rc==SQLITE_OK );
rc = pModule->xDestroy(pTab->pVtab);
sqlite3SafetyOn(db);
if( rc==SQLITE_OK ){
pTab->pVtab = 0;
}
}
return rc;
}
#endif /* SQLITE_OMIT_VIRTUALTABLE */