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https://issues.apache.org/jira/browse/BATIK-1228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ansgar Radermacher updated BATIK-1228:
--------------------------------------
Description:
There is an NPE in class ImageHandlerBase64Encoder (in batik-svggen) in the
1.9.1 build for Eclipse photon in the following code (which gets triggered by a
"File->Save as Image" in Papyrus).
ImageWriter writer =
ImageWriterRegistry.getInstance().getWriterFor("image/png");
writer.writeImage(buf, os);
...
No ImageWriter is registered for "image/png", i.e writer is null after the
assignment. The ImageIOPNGImageWriter (and others) from the batik codec package
are not "visible" for the class Service in utils which it used by the
ImageWriterRegistry to detect available writers.
This is due to a missing dependency from batik-util to batik-codec, as proposed
in [https://bz.apache.org/bugzilla/show_bug.cgi?id=44682] and
[https://stackoverflow.com/questions/16138850/batik-svggraphics2d-nullpointerexception-when-drawing-image].
However, this solution is not possible (at least not on Eclipse level), since
batik.codec also depends on batik.util, i.e. would introduce a dependency cycle.
was:
There is an NPE in class ImageHandlerBase64 encoder in the 1.9.1 build for
Eclipse photon in the following code (which gets triggered by a "File->Save as
Image" in Papyrus).
ImageWriter writer =
ImageWriterRegistry.getInstance().getWriterFor("image/png");
writer.writeImage(buf, os);
...
No ImageWriter is registered for "image/png", i.e writer is null after the
assignment. The ImageIOPNGImageWriter (and others) from the batik codec package
are not "visible" for the class Service in utils which it used by the
ImageWriterRegistry to detect available writers.
This is due to a missing dependency from batik.util to batik.codec, as proposed
in [https://bz.apache.org/bugzilla/show_bug.cgi?id=44682] and
[https://stackoverflow.com/questions/16138850/batik-svggraphics2d-nullpointerexception-when-drawing-image].
However, this solution is not possible (at least not on Eclipse level), since
batik.codec also depends on batik.util, i.e. would introduce a dependency cycle.
> NPE in SVGGen not working due to non-registered image writers
> -------------------------------------------------------------
>
> Key: BATIK-1228
> URL: https://issues.apache.org/jira/browse/BATIK-1228
> Project: Batik
> Issue Type: Bug
> Components: SVGGraphics2D, Utilities
> Affects Versions: 1.9
> Environment: Eclipse
> Reporter: Ansgar Radermacher
> Priority: Critical
>
> There is an NPE in class ImageHandlerBase64Encoder (in batik-svggen) in the
> 1.9.1 build for Eclipse photon in the following code (which gets triggered by
> a "File->Save as Image" in Papyrus).
> ImageWriter writer =
> ImageWriterRegistry.getInstance().getWriterFor("image/png");
> writer.writeImage(buf, os);
> ...
> No ImageWriter is registered for "image/png", i.e writer is null after the
> assignment. The ImageIOPNGImageWriter (and others) from the batik codec
> package are not "visible" for the class Service in utils which it used by the
> ImageWriterRegistry to detect available writers.
> This is due to a missing dependency from batik-util to batik-codec, as
> proposed in [https://bz.apache.org/bugzilla/show_bug.cgi?id=44682] and
> [https://stackoverflow.com/questions/16138850/batik-svggraphics2d-nullpointerexception-when-drawing-image].
> However, this solution is not possible (at least not on Eclipse level),
> since batik.codec also depends on batik.util, i.e. would introduce a
> dependency cycle.
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