Hi All,
I got the following crash dump from FOP 0.95 when using <fo:list-block> inside
<fo:table-cell>:
java.lang.ClassCastException: org.apache.fop.layoutmgr.SpaceElement cannot be
cast to org.apache.fop.layoutmgr.KnuthElement
It has to do something with widow-content-limit FOP extension. If I remove
either fox:widow-content-limit attribute from <fo:table>, or space-before
attribute from <fo:list-item>, there is no exception.
Minimal testcase and full stacktrace attached.
Regards,
Alexey.
<?xml version="1.0"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format";>
<fo:layout-master-set>
<fo:simple-page-master master-name="body"><fo:region-body/></fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="body">
<fo:flow flow-name="xsl-region-body">
<fo:table xmlns:fox="http://xmlgraphics.apache.org/fop/extensions"; fox:widow-content-limit="3em">
<fo:table-body>
<fo:table-row>
<fo:table-cell>
<fo:list-block>
<fo:list-item space-before="0.5em">
<fo:list-item-label><fo:block/></fo:list-item-label>
<fo:list-item-body><fo:block/></fo:list-item-body>
</fo:list-item>
</fo:list-block>
</fo:table-cell>
</fo:table-row>
</fo:table-body>
</fo:table>
</fo:flow>
</fo:page-sequence>
</fo:root>
java.lang.ClassCastException: org.apache.fop.layoutmgr.SpaceElement cannot be
cast to org.apache.fop.layoutmgr.KnuthElement
at
org.apache.fop.layoutmgr.ElementListUtils.removeLegalBreaks(ElementListUtils.java:82)
at
org.apache.fop.layoutmgr.list.ListBlockLayoutManager.getNextKnuthElements(ListBlockLayoutManager.java:124)
at
org.apache.fop.layoutmgr.table.TableCellLayoutManager.getNextKnuthElements(TableCellLayoutManager.java:170)
at
org.apache.fop.layoutmgr.table.RowGroupLayoutManager.createElementsForRowGroup(RowGroupLayoutManager.java:120)
at
org.apache.fop.layoutmgr.table.RowGroupLayoutManager.getNextKnuthElements(RowGroupLayoutManager.java:60)
at
org.apache.fop.layoutmgr.table.TableContentLayoutManager.getKnuthElementsForRowIterator(TableContentLayoutManager.java:220)
at
org.apache.fop.layoutmgr.table.TableContentLayoutManager.getNextKnuthElements(TableContentLayoutManager.java:172)
at
org.apache.fop.layoutmgr.table.TableLayoutManager.getNextKnuthElements(TableLayoutManager.java:247)
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$MainFOHandler.endElement(FOTreeBuilder.java:340)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:169)
at
org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
Source)
at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
at
org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:485)
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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