Alias for object namespace

eXile has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I have some Class::DBI modules that I want to provide an additional name for. To play nice and not clutter up the global namespace I've made Class::DBI classes with names like OrganizationName::ProjectName::Object , but I'd also like these objects (preferably in a configurable way) to be available under shorter names like for instance ProjectName::Object (to avoid typo's, overly long lines of code when using these classes, etc.). Initially I thought that would be as simple as:

package OrganizationName::ProjectName::Object;
*ProjectName::Object = *OrganizationName
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but that doesn't work, at least not for my Class::DBI Object-modules: When I try to use an object by its shorter name, it's methods are not defined. Another try that failed is using inheritance, but somehow this doesn't work either:

package OrganizationName::ProjectName::Object;
... package code here ...

package ProjectName::Object;
use base "OrganizationName::ProjectName::Object";

1;
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(complains about not being able to find object methods via the short package name). I have tried to find information on this, but I think I'm using the wrong search terms. Can anybody tell me if what I want is possible, and where to find information about it?

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Re: Aliasing a namespace/object by Ovid (Cardinal) on Jan 28, 2005 at 17:53 UTC
Try my aliased module. It only works for objects, but that's what you wanted, even though I wasn't entirely clear how you were setting things up. `# implicit aliasing takes the last part of the package name use aliased 'Really::Long::Class::Name'; my $name = Name->new; # explicit aliasing allows a rename use aliased 'Some::Long::Name::That::I::Hate' => 'Name';` [download] You can also try Package::Alias, but that requires you use the package prior to aliasing it to another namespace. Cheers, Ovid New address of my CGI Course.	[reply] [d/l]
Re: Aliasing a namespace/object by stvn (Monsignor) on Jan 28, 2005 at 17:48 UTC
Ovid recently released aliased for just this type of problem. -stvn	[reply]
Re: Aliasing a namespace/object by dragonchild (Archbishop) on Jan 28, 2005 at 17:49 UTC
I just added a similar feature to IOC this past month, along with configuration files that make it much easier to create them. Being right, does not endow the right to be rude; politeness costs nothing. Being unknowing, is not the same as being stupid. Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence. Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.	[reply]
Re: Alias for object namespace by broquaint (Abbot) on Jan 29, 2005 at 01:34 UTC
To achieve such aliasing in code simply qualify the package name with a trailing `::` e.g `{ package foo; sub meth { printf "I was declared in %s, but called with %s\n", __PACKAGE__, $_[0]; } } bar:: = foo::; bar->meth; __output__ I was declared in foo, but called with bar` [download] HTH `_________ broquaint`	[reply] [d/l]
Re: Alias for object namespace by gaal (Parson) on Jan 29, 2005 at 14:01 UTC
Copying from my home node: You could use this technique, which offers lexical scoping and other benefits and which entails no slowdown.	[reply]


Think about Loose Coupling
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