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Posted to fop-users@xmlgraphics.apache.org by Marco <me...@gmx.ch> on 2008/08/21 15:09:04 UTC
Fop-0.95: NPE when having an empty -element with
hyphenation turned on
Hi all,
I get a NullPointerException (see end of message) when transforming the following file with fop-0.95. (fop-0.94 can handle this).
<?xml version="1.0" encoding="utf-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master master-name="LetterPage" page-width="6in"
page-height="3in">
<fo:region-body region-name="PageBody" margin="0.7in"
background-color="rgb(245,245,245)"/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="LetterPage" hyphenate="true">
<fo:flow flow-name="PageBody">
<fo:block font="12pt Arial">
<!-- the following line causes a NullPointerException, if hyphenate is true -->
<fo:inline id="document.general.efficiently.dictionary"/>
<!-- the following line is working fine -->
Some <fo:inline font-weight="bold" color="red">inline text</fo:inline> formatting.
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>
It only happens when hyphenation is set to true and if the <fo:inline> element does not contain any text (I came across this while transforming a docbook <anchor> tag with the the docbook-xsl stylesheets).
Any ideas how to solve this? Do you want me to file a bug?
Cheers,
Marco
-----------------------------------
java.lang.NullPointerException
at org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.applyChanges(InlineStackingLayoutManager.java:350)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.findHyphenationPoints(LineLayoutManager.java:1480)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.findOptimalBreakingPoints(LineLayoutManager.java:950)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.createLineBreaks(LineLayoutManager.java:917)
at org.apache.fop.layoutmgr.inline.LineLayoutManager.getNextKnuthElements(LineLayoutManager.java:607)
at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:294)
at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:116)
at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:107)
at org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:145)
at org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:552)
at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:137)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:302)
at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:264)
at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:106)
at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:234)
at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:123)
at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:340)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:169)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1101)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:214)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:125)
at org.apache.fop.cli.Main.startFOP(Main.java:166)
at org.apache.fop.cli.Main.main(Main.java:197)
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Re: Fop-0.95: NPE when having an empty -element with
hyphenation turned on
Posted by Marco <me...@gmx.ch>.
-------- Original-Nachricht --------
> Datum: Thu, 21 Aug 2008 18:50:38 +0200
> Von: Andreas Delmelle <an...@telenet.be>
> An: fop-users@xmlgraphics.apache.org
> Betreff: Re: Fop-0.95: NPE when having an empty <fo:inline>-element with hyphenation turned on
> On Aug 21, 2008, at 15:09, Marco wrote:
>
> > Hi all,
> >
> > I get a NullPointerException (see end of message) when transforming
> > the following file with fop-0.95. (fop-0.94 can handle this).
> > <snip />
> > It only happens when hyphenation is set to true and if the
> > <fo:inline> element does not contain any text (I came across this
> > while transforming a docbook <anchor> tag with the the docbook-xsl
> > stylesheets).
> >
> > Any ideas how to solve this? Do you want me to file a bug?
>
> Creating an issue in Bugzilla would indeed be helpful, so we don't
> forget about it.
> I know that in 0.95, at least ids on empty fo:inlines work. If I
> remember correctly, 0.94 simply does not process empty inlines, so
> while it does not crash, the id cannot be referenced from a page-
> number-citation or a basic-link.
>
> Seems that, while correcting this, I did not add a check for empty
> inlines in hyphenated blocks.
>
>
> Thanks
>
> Andreas
>
>
Andreas,
Thanks for the quick reply.
I've just created https://issues.apache.org/bugzilla/show_bug.cgi?id=45667 which basically contains a copy of this mail.
Cheers,
Marco
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Re: Fop-0.95: NPE when having an empty -element with hyphenation turned on
Posted by Andreas Delmelle <an...@telenet.be>.
On Aug 21, 2008, at 15:09, Marco wrote:
> Hi all,
>
> I get a NullPointerException (see end of message) when transforming
> the following file with fop-0.95. (fop-0.94 can handle this).
> <snip />
> It only happens when hyphenation is set to true and if the
> <fo:inline> element does not contain any text (I came across this
> while transforming a docbook <anchor> tag with the the docbook-xsl
> stylesheets).
>
> Any ideas how to solve this? Do you want me to file a bug?
Creating an issue in Bugzilla would indeed be helpful, so we don't
forget about it.
I know that in 0.95, at least ids on empty fo:inlines work. If I
remember correctly, 0.94 simply does not process empty inlines, so
while it does not crash, the id cannot be referenced from a page-
number-citation or a basic-link.
Seems that, while correcting this, I did not add a check for empty
inlines in hyphenated blocks.
Thanks
Andreas
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