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From "Honton, Charles" <>
Subject Re: [classscan] new URL(xxx) and it's problems
Date Wed, 06 Jun 2012 23:59:10 GMT

I did originally use URLs.  Due to the ugliness Mark alludes to, I moved
to URIs.  The biggest performance consideration was using a URL as a Key
to a map.  That completely blew up performance.

Does anyone have a concrete example of !url.equals(new
URL(url.toExternalForm()) ?


On 6/6/12 1:13 PM, "Mark Struberg" <> wrote:

>I've now looked through both impls and both share some very similar API
>classes obviously (MetaClass, MetaField, etc). Details are different, but
>I think we can extract a common API.
>One thing I figured while looking at the code is that some parts are full
>with URI handling instead of URL.
>The problem with this is that an URI#toURL() internally does a new
>Now the problem hereby is that on some systems a
>URL u = someResource.getURL();
>URL u2 = new URL(u.toExternalForm());
>doesn't work. Those methods are just not reflexive on some systems.
>This happens often if VFS are involved (e.g. on JBossAS4,5,6, WebLogic,
>etc) and even in general on some OS (Solaris 10.5/Sparc).
>The only way I know to cope with it is to _not_ only store the String
>representation but the URL itself. This sucks big times as well, because
>URL is a class which escaped from hell - doing DNS lookup on equals() and
>other weird things *shudder* - but I don't know of any better way :(
>Any tip is welcome.
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