[FOP-2518] NullPointerException

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Duplicate
• Affects Version/s: 2.0
• Assignee: Unassigned
• Reporter: Björn Kautler
• Created: 24/Aug/15 10:55
• Updated: 26/Aug/15 13:06
• Resolved: 25/Aug/15 09:05

Description

FOP throws the following NPE when trying to transform a DocBook document to PDF:

Caused by: java.lang.NullPointerException
        at org.apache.fop.layoutmgr.list.ListItemLayoutManager.getCombinedKnuthElementsForListItem(ListItemLayoutManager.java:405)
        at org.apache.fop.layoutmgr.list.ListItemLayoutManager.getNextKnuthElements(ListItemLayoutManager.java:326)
        at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:239)
        at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextChildElements(BlockStackingLayoutManager.java:498)
        at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:289)
        at org.apache.fop.layoutmgr.list.ListBlockLayoutManager.getNextKnuthElements(ListBlockLayoutManager.java:103)
        at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:239)
        at org.apache.fop.layoutmgr.BlockLayoutManager.getNextChildElements(BlockLayoutManager.java:141)
        at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:289)
        at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:113)
        at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:105)
        at org.apache.fop.layoutmgr.BlockLayoutManager.getNextChildElements(BlockLayoutManager.java:141)
        at org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:289)
        at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:113)
        at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:105)
        at org.apache.fop.layoutmgr.FlowLayoutManager.getNextChildElements(FlowLayoutManager.java:223)
        at org.apache.fop.layoutmgr.FlowLayoutManager.addChildElements(FlowLayoutManager.java:147)
        at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:116)
        at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:69)
        at org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:252)
        at org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:643)
        at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:178)
        at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:158)
        at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:384)
        at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112)
        at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:138)
        at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
        at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130)
        at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360)
        at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
        at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
        at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
        at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:485)
        at org.apache.xalan.transformer.TransformerIdentityImpl$transform.call(Unknown Source)

Issue Links

• duplicates: FOP-2461 NullPointerException in ListItemLayoutManager since Temp_BasicSideFloat Merge