Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Although <a href="https://stackoverflow.com/questions/2791833/how-do-i-implement-a-dispatch-table-in-a-perl-oo-module/2791880#2791880">Robert P</a>'s answer might work for you, it has the problem of fixing the dispatch very early in the process. I tend to resolve the methods as late as I can, so I would leave the things in the <code>tests</code> array as method names until you want to use them:</p> <pre><code> $self-&gt;{tests} = [ qw( _sub1 _sub2 ) ]; </code></pre> <p>The strength of a dynamic language is that you can wait as long as you like to decide what's going to happen.</p> <p>When you want to run them, you can go through the same process that Robert already noted. I'd add an interface to it though:</p> <pre><code> foreach my $method_name ( $obj-&gt;get_test_methods ) { $obj-&gt;$method_name(); } </code></pre> <p>That might even be better as not tying the test to an existing method name:</p> <pre><code> foreach my $method_name ( $obj-&gt;get_test_methods ) { $obj-&gt;run_test_named( $method_name ); } </code></pre> <p>That <code>run_test_named</code> could then be your dispatcher, and it can be very flexible:</p> <pre><code> sub run_test_named { my( $self, $name ) = @_; # do anything you want, like in Robert's answer } </code></pre> <p>Some things you might want to do:</p> <ul> <li>Run a method on an object</li> <li>Pass the object as an argument to something else</li> <li>Temporarily override a test</li> <li>Do nothing</li> <li>etc, etc</li> </ul> <p>When you separate what you decide to do from its implementation, you have a lot more freedom. Not only that, the next time you call the same test name, you can do something different.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow do I implement a dispatch table in a Perl OO module?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USbrian d foy
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POHow do I implement a dispatch table in a Perl OO module?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COTo solve the timeliness issue you mention, an alternative would be to simply make the {test} a subroutine itself, that returns a ref, and then you could get it at exactly the time you need it: `sub tests { return [ $self->can('_sub1'), $self->can('_sub2') ] }` and then use it like `for $tn (0..$#{$self->tests()}) { ... }`.
      singulars
      1. PO
      1. USRobert P
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload