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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 49452] New: NullPointerException in LineHeightPropertyMaker.java:57
Date Thu, 17 Jun 2010 07:45:49 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=49452

           Summary: NullPointerException in
                    LineHeightPropertyMaker.java:57
           Product: Fop
           Version: 0.95
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: general
        AssignedTo: fop-dev@xmlgraphics.apache.org
        ReportedBy: dominik.stadler@gmx.at


We use FOP to generate PDF reports. On one machine it started to fail with the
following error with no apparent reason. It seems this is an intermittent
problem as it did work before without code change. Also the same code runs fine
on other machines. 

We will restart the machine soon and see if it keeps appearing on this one or
if it really is gone again after restarting.

I am attaching the XSL-FO that is used here, but generating this on another
machine works fine so it doesn't seem to be the cause.

Caused by: javax.xml.transform.TransformerException:
java.lang.NullPointerException
at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:717)
at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:313)
at
com.dynatrace.diagnostics.report.velocity.VelFopProcessor.merge(VelFopProcessor.java:136)
at
com.dynatrace.diagnostics.report.velocity.VelFOPReportRenderer.renderLayoutComponents(VelFOPReportRenderer.java:70)
... 40 more
Caused by: java.lang.NullPointerException
at
org.apache.fop.fo.properties.LineHeightPropertyMaker.make(LineHeightPropertyMaker.java:57)
at
org.apache.fop.fo.properties.LineHeightPropertyMaker.compute(LineHeightPropertyMaker.java:75)
at
org.apache.fop.fo.properties.PropertyMaker.findProperty(PropertyMaker.java:267)
at org.apache.fop.fo.properties.PropertyMaker.get(PropertyMaker.java:296)
at
org.apache.fop.fo.properties.CompoundPropertyMaker.get(CompoundPropertyMaker.java:145)
at org.apache.fop.fo.PropertyList.get(PropertyList.java:176)
at org.apache.fop.fo.StaticPropertyList.get(StaticPropertyList.java:72)
at org.apache.fop.fo.PropertyList.get(PropertyList.java:156)
at org.apache.fop.fo.flow.Block.bind(Block.java:120)
at org.apache.fop.fo.FObj.processNode(FObj.java:126)
at
org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:286)
at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:163)
at
com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.closeStartTag(ToXMLSAXHandler.java:204)
at
com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.characters(ToXMLSAXHandler.java:524)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.characters(AbstractSAXParser.java:538)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:463)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:637)
at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:708)
... 43 more

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