return nsMdbTableEnumerator::CreateInstance(mEnv, mTable, kToken_URLColumn, aResult);
URLEnumerator* result = new URLEnumerator(kToken_URLColumn); if (! result) return NS_ERROR_OUT_OF_MEMORY;  nsresult rv; rv = result->Init(mEnv, mTable); if (NS_FAILED(rv)) return rv;  *aResult = result; NS_ADDREF(*aResult); return NS_OK;
nsGlobalHistory::GetAllResources(nsISimpleEnumerator** aResult){  return nsMdbTableEnumerator::CreateInstance(mEnv, mTable, kToken_URLColumn, aResult);}