Method populate

src/jrd/Mapping.cpp:310–415

}

bool Mapping::Cache::populate(IAttachment *att)
{
	FbLocalStatus st;

	if (dataFlag)
	{
		return false;
	}

	if (!att)
	{
		dataFlag = true;
		return false;
	}

	MAP_DEBUG(fprintf(stderr, "Populate cache for %s\n", name.c_str()));

	ITransaction* tra = nullptr;
	IResultSet* curs = nullptr;

	try
	{
		ClumpletWriter readOnly(ClumpletWriter::Tpb, MAX_DPB_SIZE, isc_tpb_version1);
		readOnly.insertTag(isc_tpb_read);
		readOnly.insertTag(isc_tpb_wait);
		tra = att->startTransaction(&st, readOnly.getBufferLength(), readOnly.getBuffer());
		check("IAttachment::startTransaction", &st);

		Message mMap;
		Field<Text> usng(mMap, 1);
		Field<Varying> plugin(mMap, MAX_SQL_IDENTIFIER_SIZE);
		Field<Varying> db(mMap, MAX_SQL_IDENTIFIER_SIZE);
		Field<Varying> fromType(mMap, MAX_SQL_IDENTIFIER_SIZE);
		Field<Varying> from(mMap, 255);
		Field<SSHORT> role(mMap);
		Field<Varying> to(mMap, MAX_SQL_IDENTIFIER_SIZE);

		curs = att->openCursor(&st, tra, 0,
			"SELECT RDB$MAP_USING, RDB$MAP_PLUGIN, RDB$MAP_DB, RDB$MAP_FROM_TYPE, "
			"	RDB$MAP_FROM, RDB$MAP_TO_TYPE, RDB$MAP_TO "
			"FROM RDB$AUTH_MAPPING",
			3, nullptr, nullptr, mMap.getMetadata(), nullptr, 0);
		if (st->getState() & IStatus::STATE_ERRORS)
		{
			if (fb_utils::containsErrorCode(st->getErrors(), isc_dsql_relation_err))
			{
				// isc_dsql_relation_err when opening cursor - i.e. table RDB$AUTH_MAPPING
				// is missing due to non-FB3 security DB
				tra->release();
				dataFlag = true;
				return false;
			}
			check("IAttachment::openCursor", &st);
		}

		while (curs->fetchNext(&st, mMap.getBuffer()) == IStatus::RESULT_OK)
		{
			const char* expandedDb = "*";