Update:Within the code block

Hi all. Simple question.

Is it advisable to use local to temporarily modify parts of a DBD::MySQL db handle for the 1 place in a big program where i want to use a transaction, or is this not going to work like i think? 

   my $dbh = ...;
   ...
   { # enclosing block for transaction
#       local $dbh->{'AutoCommit'} = 1;
# UPDATE - thanks Corion
       local $dbh->{'AutoCommit'} = 0;
       local $dbh->{'PrintError'} = 0;

       # do the transaction queries
       ...
       $dbh->commit();
   }

[download]
What im trying to accomplish is the localized change of the $dbh attributes to do the transaction, then commit it. So as i see it, when i exit the enclosing block, the localized values will go out of scope and the originals will be restored. In reality, the enclosing block will be a function, but i wanted as simple an example as possible.

I already wrote a little test script that seems to work properly, but i am new to transactions, and dont use local that much, and am looking for any possible problems that this may cause.

I am mostly using whats in the MySQL cookbook section 15.4 Using Transactions in Perl Programs, but they dont use local, and using local seems cleaner to me.

In reply to local & DBD::mysql by shemp

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.