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https://issues.apache.org/jira/browse/PDFBOX-5525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17617146#comment-17617146
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Tilman Hausherr commented on PDFBOX-5525:
-----------------------------------------
Preflight now fails with "7.5 : Error on MetaData, Missing
pdfaSchema:namespaceURI in type definition"
I don't know what's wrong with the XMP, but VeraPDF also fails the PDF/A check
for similar reasons, so the fix is probably good 😂
{quote}The Schema type is an XMP structure containing the definition of an
extension schema. The field namespace URI is
"http://www.aiim.org/pdfa/ns/schema#";. The required field namespace prefix is
pdfaSchema. The Schema type includes the following fields: pdfaSchema:schema
(Text), pdfaSchema:namespaceURI (URI), pdfaSchema:prefix (Text),
pdfaSchema:property (Seq Property), pdfaSchema:valueType (Seq ValueType).
Properties specified in XMP form shall use either the predefined schemas
defined in XMP Specification, or extension schemas that comply with XMP
Specification
{quote}
> Null pointer exception in PDFASchemaType.getNamespaceURI()
> ----------------------------------------------------------
>
> Key: PDFBOX-5525
> URL: https://issues.apache.org/jira/browse/PDFBOX-5525
> Project: PDFBox
> Issue Type: Bug
> Components: XmpBox
> Affects Versions: 2.0.27, 3.0.0 PDFBox
> Reporter: Christoph
> Assignee: Tilman Hausherr
> Priority: Major
> Fix For: 2.0.28, 3.0.0 PDFBox
>
> Attachments: PDFBOX-5525-xmp.xml
>
>
> Importing the following PDF given an NPE:
> This was originally reported to JabRef's repo, where we use version 3.0.0-RC1
> [https://www.dropbox.com/s/0vtyhir0303pbuy/oe-30-4-5916.pdf?dl=0]
> {{ERROR: Error importing: java.lang.NullPointerException: Cannot invoke
> "String.trim()" because the return value of
> "org.apache.xmpbox.type.PDFASchemaType.getNamespaceURI()" is null}}
> {{Â Â at
> [email protected]/org.apache.xmpbox.xml.PdfaExtensionHelper.populatePDFASchemaType(PdfaExtensionHelper.java:126)}}
> {{Â Â at
> [email protected]/org.apache.xmpbox.xml.PdfaExtensionHelper.populateSchemaMapping(PdfaExtensionHelper.java:116)}}
> {{Â Â at
> [email protected]/org.apache.xmpbox.xml.DomXmpParser.parse(DomXmpParser.java:197)}}
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