https://issues.apache.org/bugzilla/show_bug.cgi?id=47611
Summary: NPE at InlineStackingLayoutManager.java:320
Product: Fop
Version: 0.95
Platform: PC
OS/Version: Linux
Status: NEW
Severity: major
Priority: P2
Component: pdf
AssignedTo: [email protected]
ReportedBy: [email protected]
; SystemID: file:/var/www/sumo/lib/sumo-pdf.xsl; Line#: 40; Column#: 29
javax.xml.transform.TransformerException: java.lang.NullPointerException
at
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java:2416)
at
org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResul
t.java:1374)
at
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java:2411)
at
org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(Tran
sformerImpl.java:2281)
at
org.apache.xalan.transformer.TransformerImpl.transformNode(Transforme
rImpl.java:1367)
at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImp
l.java:709)
at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImp
l.java:1284)
at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImp
l.java:1262)
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)
Caused by: java.lang.NullPointerException
at
org.apache.fop.layoutmgr.inline.InlineStackingLayoutManager.applyChan
ges(InlineStackingLayoutManager.java:320)
at
org.apache.fop.layoutmgr.inline.LineLayoutManager.findHyphenationPoin
ts(LineLayoutManager.java:1480)
at
org.apache.fop.layoutmgr.inline.LineLayoutManager.findOptimalBreaking
Points(LineLayoutManager.java:950)
at
org.apache.fop.layoutmgr.inline.LineLayoutManager.createLineBreaks(Li
neLayoutManager.java:917)
at
org.apache.fop.layoutmgr.inline.LineLayoutManager.getNextKnuthElement
s(LineLayoutManager.java:607)
at
org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthEleme
nts(BlockStackingLayoutManager.java:294)
...
I have patched it by doing on the 0.95 source.
--- InlineStackingLayoutManager.java.orig 2008-08-01 00:02:58.000000000
+1000
+++ InlineStackingLayoutManager.java 2009-07-30 17:57:05.000000000 +1000
@@ -317,8 +317,9 @@
KnuthElement oldElement;
while (oldListIterator.hasNext()) {
oldElement = (KnuthElement) oldListIterator.next();
- oldElement.setPosition
- (((NonLeafPosition) oldElement.getPosition()).getPosition());
+ NonLeafPosition pos = (NonLeafPosition) oldElement.getPosition();
+ if (pos != null)
+ oldElement.setPosition(pos.getPosition());
}
// reset the iterator
oldListIterator = oldList.listIterator();
A different patch, https://issues.apache.org/bugzilla/show_bug.cgi?id=45667 has
already been applied with no effect.
I don't understand the code so this is just a workaround from me. I can attach
the .fo file, but it's 140kB. If you don't mind, I can do that. I know I should
trim it to a small example, but as it seems to be something to do with
hyphenation, I may remove the bug if I do that. Besides, it's pretty obvious
that it crashes when I feed the .fo file to fop. This seems to be a rather rare
bug, it's the first time I've seen it in two years of using FOP in production.
Should I try building fop.jar from trunk? It doesn't look like there have been
any changes checked in for a while.
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