[XGC-73] NPE in XMPHandler.endElement when creating a PDF/A-1b document using FOP

• Type: Bug
• Status: Open
• Resolution: Unresolved
• Affects Version/s: 1.4
• Component/s: xmp
• Environment: Operating System: ; Platform: PC
• Assignee: XML Graphics Project Mailing List
• Reporter: oliver.moehrke
• Created: 27/Sep/12 08:57
• Updated: 24/Jun/15 08:47

Description

When using FOP v1.0 or v1.1rc to create a PDF/A-1b compliant PDF document, embedding an XMP structure that contains an <xmpMM:History> entry leads to a NPE in XMPHandler.endElement.

This happens, when the history entry contains at least one <stVer:event> entry. I used the Xalan (2.7.0) and Xerces (2.7.1) versions, that are deliverd with FOP v1.0 and v1.1rc1.

Stacktrace:

java.lang.NullPointerException
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:303)
at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:130)
at org.apache.fop.cli.Main.startFOP(Main.java:177)
at org.apache.fop.cli.Main.main(Main.java:208)
Caused by: java.lang.NullPointerException
at org.apache.xmlgraphics.xmp.XMPHandler.endElement(XMPHandler.java:291)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:181)
at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1101)
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:484)
at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:300)
... 3 more