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From Jeremias Maerki <...@jeremias-maerki.ch>
Subject Re: GifImage hangs indefinitely
Date Wed, 04 Apr 2007 20:13:42 GMT
That NPE is a known problem. I actually think GIFImage should be removed.
At any rate, I won't reimplement that once I get to the image package
redesign. I have tried at least twice to somehow work around what I
think is a bug in the class library but no luck. I gave up.

On 02.04.2007 08:47:34 Daniel Noll wrote:
> Hi all.
> 
> I thought I might try to side-step the ImageIO GIF bug by commenting out 
> that provider in FOP's ImageFactory.  But it looks like the GifImage 
> implementation is unsafe too.  The call to consumer.getImage() hangs 
> waiting forever.
> 
> The underlying problem seems to come from the JDK, however:
> > java.lang.NullPointerException
> > 	at sun.awt.image.URLImageSource.getConnection(URLImageSource.java:97)
> > 	at sun.awt.image.URLImageSource.getDecoder(URLImageSource.java:107)
> > 	at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:240)
> > 	at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172)
> > 	at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136)
> 
> That line in the JRE's URLImageSource.java calls url.openConnection(), 
> so it fails because FOP's DummyConnection (URLConnection) doesn't attach 
> a URL to the request.
> 
> I'm thinking that perhaps we can use the original URI to return a URL in 
> that DummyConnection class, but I don't have enough time left today to 
> test that theory just yet so I thought I'd prod the list to see if 
> someone thinks it would solve the issue.


Jeremias Maerki


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