Major Description
Hi there,
when using XMP metadata for formatting objects I get a null pointer from the org.apache.xmlgraphics.xmp.XMPHandler class.
I also opened a ticket in fop (https://issues.apache.org/jira/browse/FOP-3076) But it seems the bug is happening in XMPHandler. Attached the formatting objects file with the XMP metadata.
Would be really nice if you could have a look at it.
Thank you,
Gregor
I am running the command:
fop -r -fo zugferd.fo -pdf zugferd.pdf
Juni 10, 2022 7:09:35 PM org.apache.fop.cli.Main startFOP
SEVERE: Exception
org.apache.fop.apps.FOPException: java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:296)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:116)
at org.apache.fop.cli.Main.startFOP(Main.java:183)
at org.apache.fop.cli.Main.main(Main.java:214)
Caused by: java.lang.NullPointerException
at org.apache.xmlgraphics.xmp.XMPHandler.endElement(XMPHandler.java:291)
at org.apache.fop.fo.FOTreeBuilder$3.run(FOTreeBuilder.java:207)
at org.apache.fop.fo.FOTreeBuilder$3.run(FOTreeBuilder.java:204)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:203)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:293)
... 3 more
The bug might also be caused in org.apache.xmlgraphics.xmp.XMPHandler
The line before the null pointer stated
assert getCurrentProperties() != null : "no current property";
The FO File is also attached to this report.
<?xml version="1.0" encoding="utf-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master master-name="master-first-page" page-width="210mm" page-height="297mm" margin-top="0mm"
margin-bottom="0mm" margin-left="0mm" margin-right="0mm">
<fo:region-body margin-top="90mm" margin-bottom="25mm" margin-left="15mm" margin-right="15mm"/>
</fo:simple-page-master>
</fo:layout-master-set>
<x:xmpmeta xmlns:x="adobe:ns:meta/">
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<rdf:Description xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/extension/"
xmlns:pdfaSchema="http://www.aiim.org/pdfa/ns/schema#"
xmlns:pdfaProperty="http://www.aiim.org/pdfa/ns/property#" rdf:about="">
<pdfaExtension:schemas>
<rdf:Bag>
<rdf:li rdf:parseType="Resource">
<pdfaSchema:schema>Factur-X PDFA Extension Schema</pdfaSchema:schema>
<pdfaSchema:namespaceURI>urn:factur-x:pdfa:CrossIndustryDocument:invoice:1p0#
</pdfaSchema:namespaceURI>
<pdfaSchema:prefix>fx</pdfaSchema:prefix>
<pdfaSchema:property>
<rdf:Seq>
<rdf:li rdf:parseType="Resource">
<pdfaProperty:name>DocumentFileName</pdfaProperty:name>
<pdfaProperty:valueType>Text</pdfaProperty:valueType>
<pdfaProperty:category>external</pdfaProperty:category>
<pdfaProperty:description>name of the embedded XML invoice file
</pdfaProperty:description>
</rdf:li>
<rdf:li rdf:parseType="Resource">
<pdfaProperty:name>DocumentType</pdfaProperty:name>
<pdfaProperty:valueType>Text</pdfaProperty:valueType>
<pdfaProperty:category>external</pdfaProperty:category>
<pdfaProperty:description>INVOICE</pdfaProperty:description>
</rdf:li>
<rdf:li rdf:parseType="Resource">
<pdfaProperty:name>Version</pdfaProperty:name>
<pdfaProperty:valueType>Text</pdfaProperty:valueType>
<pdfaProperty:category>external</pdfaProperty:category>
<pdfaProperty:description>The actual version of the Factur-X XML schema
</pdfaProperty:description>
</rdf:li>
<rdf:li rdf:parseType="Resource">
<pdfaProperty:name>ConformanceLevel</pdfaProperty:name>
<pdfaProperty:valueType>Text</pdfaProperty:valueType>
<pdfaProperty:category>external</pdfaProperty:category>
<pdfaProperty:description>The conformance level of the embedded Factur-X data
</pdfaProperty:description>
</rdf:li>
</rdf:Seq>
</pdfaSchema:property>
</rdf:li>
</rdf:Bag>
</pdfaExtension:schemas>
</rdf:Description>
<rdf:Description xmlns:fx="urn:factur-x:pdfa:CrossIndustryDocument:invoice:1p0#" rdf:about=""
fx:ConformanceLevel="EN 16931" fx:DocumentFileName="factur-x.xml" fx:DocumentType="INVOICE"
fx:Version="1.0"/>
</rdf:RDF>
</x:xmpmeta>
<fo:page-sequence master-reference="master-first-page">
<fo:flow flow-name="xsl-region-body">
<fo:block color="#313131">Hello ZUGFeRD</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>