/**
* Checks package descriptor and if packages involved in dependencies are already installed.
*
* @param pkg package
* @throws QueryException query exception
*/
public void check(final Package pkg) throws QueryException {
// check if package is already installed
final byte[] name = pkg.uniqueName();
if (repo.pkgDict().get(name) != null) PKGINST.thrw(input, name);
// check package dependencies
checkDepends(pkg);
// check package components
checkComps(pkg);
}
