I guess your intention is to make a single connection for use by other modules during a CGI call?

I use a piece of code like this

{
package Common;

  my $dbh = 0;

  sub getDbh
  {
    if ($dbh == 0)
    {
      # do all the stuff you said above to connect ...
    }
    return $dbh;
  }

  sub END
  {
    # print "disconnecting ..";
    $dbh->disconnect();
  }
}

# other stuff ....

1;

[download]

The $dbh is now privately scoped and cannot be accessed excpet by the method calls provided. You also don't have to worry about disconnecting, it happens at the end of the script automatiocally. (Knowing Perl, it would clean up the filehandle safely when done anyhow, but it's good practice to do it yourself.)

In reply to Re: Problem creating a singleton wrapper around DBI by danmcb
in thread Problem creating a singleton wrapper around DBI by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.