Hello,
I am using the Antenna House XSL stylesheets to convert XHTML to
XML-FO. This works very well in most cases. However, I have come
across a problem where a fo:block-container inside a fo:inline will
cause an NPE.
An example FO file that exhibits this problem is attached. The stack
trace is also attached. If you remove the fo:inline that encloses the
fo:block-container, then everything works fine.
I'm wondering, is it even legal to have fo:block-container inside a
fo:inline? If it is legal, any chance that this problem has been fixed
in 0.95?
Thank you for any insights.
- Frank
<?xml version="1.0" encoding="UTF-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format"; xmlns:html="http://www.w3.org/1999/xhtml"; writing-mode="lr-tb" hyphenate="false" text-align="start" role="html:html">
<fo:layout-master-set>
<fo:simple-page-master page-width="auto" page-height="auto" master-name="all-pages">
<fo:region-body column-gap="12pt" column-count="1" margin-left="0.5in" margin-bottom="0.75in" margin-right="0.5in" margin-top="0.75in"/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="all-pages">
<fo:flow flow-name="xsl-region-body">
<fo:block>
<fo:inline>
<fo:block-container width="550px" border="1px solid gray" color="#FF2525" padding="10px" text-align="left" vertical-align="top">
<fo:block end-indent="0pt" start-indent="0pt">Test</fo:block>
</fo:block-container>
</fo:inline>
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>
5-Sep-2008 10:07:34 AM org.apache.fop.cli.Main startFOP
SEVERE: Exception
java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:168)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
at org.apache.fop.cli.Main.startFOP(Main.java:166)
at org.apache.fop.cli.Main.main(Main.java:197)
---------
java.lang.NullPointerException
at
org.apache.fop.layoutmgr.BlockContainerLayoutManager.getNextKnuthElements(BlockContainerLayoutManager.java:200)
at
org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:303)
at
org.apache.fop.layoutmgr.inline.LineLayoutManager.collectInlineKnuthElements(LineLayoutManager.java:654)
at
org.apache.fop.layoutmgr.inline.LineLayoutManager.getNextKnuthElements(LineLayoutManager.java:590)
at
org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:284)
at
org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:113)
at
org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:106)
at
org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:145)
at
org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:551)
at
org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:137)
at
org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:301)
at
org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:263)
at
org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:144)
at
org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:233)
at
org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:145)
at
org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:378)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:194)
at
org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1101)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
Source)
at
org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:165)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
at org.apache.fop.cli.Main.startFOP(Main.java:166)
at org.apache.fop.cli.Main.main(Main.java:197)
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