Function main

examples/interfaces/05.user_metadata.cpp:204–283

}

int main()
{
	int rc = 0;
	unsigned char* buffer = NULL;

	// set default password if none specified in environment
	setenv("ISC_USER", "sysdba", 0);
	setenv("ISC_PASSWORD", "masterkey", 0);

	// status vector and main dispatcher
	ThrowStatusWrapper status(master->getStatus());
	IProvider* prov = master->getDispatcher();

	// declare pointers to required interfaces
	IAttachment* att = NULL;
	ITransaction* tra = NULL;
	IResultSet* curs = NULL;
	MyMetadata* meta = NULL;

	try
	{
		// Instance of our metadata
		meta = new MyMetadata;
		meta->addRef();

		// allocate output buffer
		buffer = new unsigned char[meta->length];

		// attach employee db
		att = prov->attachDatabase(&status, "employee", 0, NULL);

		// start default transaction
		tra = att->startTransaction(&status, 0, NULL);

		// open cursor
		curs = att->openCursor(&status, tra, 0, "select current_user from rdb$database",
			SAMPLES_DIALECT, NULL, NULL, meta, NULL, 0);

		// fetch record from cursor and print it
		curs->fetchNext(&status, buffer);
		ISC_SHORT l = to<ISC_SHORT>(buffer, meta->offset);
		printf("<%*.*s>\n", l, l, buffer + meta->offset + sizeof(ISC_SHORT));

		// close interfaces
		curs->close(&status);
		curs = NULL;

		tra->commit(&status);
		tra = NULL;

		att->detach(&status);
		att = NULL;
	}
	catch (const FbException& error)
	{
		// handle error
		rc = 1;