Hi there monks, this is my first post, so please forgive any foolish behaviour. I am not a perl newbie but I am trying out some OOP stylish programming. I have a user class, which is loaded with values from a database. So, whenever I create a new user object I have one corresponding MySQL query for the user data. Now, I have the situation, that I would like to get all users in the system. Using a loop 
my @users;
foreach my $id (@userIds) {
       push (@users,User->new($id));
}

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this will produce one MySQL query per object initialisation. So many queries for a longer user list ... I am wondering, if there is a way to use the class constructur with a list of ids, running only one query in the new() constructur and then return several user objects at once? Something like: 
my @users=User->new($id1,$id2,$id3,$id4);

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Where array @users() contain several user objects afterwards. My class constructor looks like 
sub new {
    my $proto = shift(@_);
    my $userId=shift(@_);
        my $class = ref($proto) || $proto;
    my $self = {
        "user_id"=> undef,
        "user_name" => undef
        };
        bless ($self, $class);
    my $href = GETSQL("SELECT user_name FROM users WHERE user_id = $us
+erId");
    @{$self}{keys %{$href}} = values %{$href};
        return $self;

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All vague solutions I can think of, mean a huge reconstruction of code. E.g. different constructors for single / multiple instances nested within the class.... Any help, comments are appreciated. Thanks!!

In reply to OOP: How to construct multiple instances of a class at once by DrGTO

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