https://issues.apache.org/bugzilla/show_bug.cgi?id=45667
Summary: NPE when having an empty <fo:inline>-element with
hyphenation turned on
Product: Fop
Version: 0.95
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: critical
Priority: P2
Component: general
AssignedTo: fop-dev@xmlgraphics.apache.org
ReportedBy: [EMAIL PROTECTED]
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).
I mark this bug as "critical" because it stops us from migrating to fop-0.95
(at least as long as there is not workaround available).
-----------------------------------
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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