Hi Mark,

I've had similar exceptions regarding PageBreakingAlgorithm.java in specific
layout situation, not only in 0.94 but also in 0.93.

I can guess your table (the code above footnote) appears near the bottom of
the page. Is it right?
Do you have some footnotes one after another?
When I had 4, 5, 6 footnotes in a group, this always results in
"PageBreakingAlgorithm exception".

As some kind of workaround I suggest you to add some space-after (or
space-before) attributes to one or more elements that precede the trouble
footnote.
Try with different values (10, 20, 40, 50pt..), the idea is to move the
footnote(s) to the next page.

Regards,
Iskren

-----Original Message-----
From: news [mailto:[EMAIL PROTECTED] On Behalf Of Mark
Sent: Thursday, September 27, 2007 9:28 PM
To: [email protected]
Subject: Null Pointer Exception with Footnotes

I'm getting a null pointer exception when trying to add a footnote to a 
specific aspect of my page. I'm using version 0.94 of FOP. I am including
the 
stack trace I receive for the exception. I'm also including a skimmed down 
version of my fo file. If this does not provide enough context, I can paste
in 
the whole thing. Thanks for any help.

Sep 27, 2007 1:59:37 PM 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.PageBreakingAlgorithm.handleFootnotes
(PageBreakingAlgorithm.java:248)
at org.apache.fop.layoutmgr.PageBreakingAlgorithm.handleBox
(PageBreakingAlgorithm.java:220)
at org.apache.fop.layoutmgr.BreakingAlgorithm.findBreakingPoints
(BreakingAlgorithm.java:462)
at org.apache.fop.layoutmgr.BreakingAlgorithm.findBreakingPoints
(BreakingAlgorithm.java:403)
at
org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:338)
at 
org.apache.fop.layoutmgr.BlockContainerLayoutManager.getNextKnuthElementsAbs
olu
te(BlockContainerLayoutManager.java:509)
at org.apache.fop.layoutmgr.BlockContainerLayoutManager.getNextKnuthElements
(BlockContainerLayoutManager.java:195)
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$MainFOHandler.endElement
(FOTreeBuilder.java:378)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:194)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement
(TransformerIdentityImpl.java:1101)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown 
Source)
at 
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatc
her
.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)



<fo:flow flow-name="xsl-region-body" >
 <fo:block break-after="page">
  <fo:block-container absolute-position="absolute" border-style="solid"
   top="0in" left="0in" width="3in" height="2.75in" font-size="10pt">
   <fo:block >
    <fo:table width="100%" table-layout="fixed">
     <fo:table-header>
      <fo:table-row background-color="silver">
       <fo:table-cell number-columns-spanned="3">
        <fo:block>Title of table which should span columns</fo:block>
       </fo:table-cell>
      </fo:table-row>
      <fo:table-row background-color="black" color="white">
       cell tags omitted...
      </fo:table-row>
     </fo:table-header>
     <fo:table-body>
      <fo:table-row>
       cell tags omitted...
      </fo:table-row>
     </fo:table-body>
    </fo:table>
   </fo:block>
   <fo:block>hello
<!-- exception doesn't occur when below footnote is removed -->
    <fo:footnote>
     <fo:inline baseline-shift="super" font-size="75%">(1)</fo:inline>
     <fo:footnote-body start-indent="0pt" end-indent="0pt" text-indent="0pt"

last-line-end-indent="0pt" text-align="start">
      <fo:block background-color="antiquewhite" end-indent="5mm">
       <fo:inline baseline-shift="super" font-size="75%">(1)</fo:inline>
       This is a footnote text.
      </fo:block>
  </fo:footnote-body>
 </fo:footnote>
 </fo:block>
 </fo:block-container>
closing tags...


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