[PDFBOX-4325] Validation fails with ClassCastException

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.11
• Component/s: Preflight
• Assignee: Unassigned
• Reporter: Alonso Gonzalez
• Created: 27/Sep/18 06:19
• Updated: 27/Sep/18 21:29

Description

We have to validate PDFs that were created using iText5. But the validation fails with a ClassCastException:

Exception in thread "main" java.lang.ClassCastException: class org.apache.xmpbox.type.PDFAPropertyType
	at java.lang.Class.asSubclass(Class.java:3404)
	at org.apache.xmpbox.type.TypeMapping.instanciateSimpleProperty(TypeMapping.java:180)
	at org.apache.xmpbox.xml.DomXmpParser.parseLiElement(DomXmpParser.java:521)
	at org.apache.xmpbox.xml.DomXmpParser.parseLiDescription(DomXmpParser.java:603)
	at org.apache.xmpbox.xml.DomXmpParser.parseLiElement(DomXmpParser.java:514)
	at org.apache.xmpbox.xml.DomXmpParser.manageArray(DomXmpParser.java:465)
	at org.apache.xmpbox.xml.DomXmpParser.createProperty(DomXmpParser.java:344)
	at org.apache.xmpbox.xml.DomXmpParser.parseChildrenAsProperties(DomXmpParser.java:311)
	at org.apache.xmpbox.xml.DomXmpParser.parseDescriptionRoot(DomXmpParser.java:240)
	at org.apache.xmpbox.xml.DomXmpParser.parse(DomXmpParser.java:192)
	at org.apache.pdfbox.preflight.process.MetadataValidationProcess.validate(MetadataValidationProcess.java:69)
	at org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:84)
	at org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:122)
	at org.apache.pdfbox.preflight.PreflightDocument.validate(PreflightDocument.java:166)
	at Main.main(Main.java:40)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

I've attached a minimal example PDF that triggers the error.