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https://issues.apache.org/jira/browse/PDFBOX-3882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18041833#comment-18041833
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Tilman Hausherr commented on PDFBOX-3882:
-----------------------------------------
Some new thoughts on this for a later time:
In {{parseLiDescription}} there is a {{return null}} if there are no children.
This way the attributes are lost in the xml I mentioned in a previous comment.
This could have been done in a call to {{loadAttributes}}, however that method
needs an existing {{AbstractField}} object.
{{parseLiDescription}} usually creates an {{AbstractField}} object based on the
type of the first child. So what may have to be done is to write a modified
version of {{loadAttributes}} that creates creates an {{AbstractField}} object
based on the type of the first attribute.
And we may also have to add {{loadAttributes}} to {{parseLiDescription}} anyway
because I suspect the attributes are also ignored if there are children, e.g.
in the "<pdfaSchema:valueType>" branch.
> False negative on PDFA-1b validation : missing field type
> ---------------------------------------------------------
>
> Key: PDFBOX-3882
> URL: https://issues.apache.org/jira/browse/PDFBOX-3882
> Project: PDFBox
> Issue Type: Bug
> Components: XmpBox
> Affects Versions: 2.0.7
> Reporter: Antoine Ribes
> Priority: Major
> Attachments: ticket-0028422-better.pdf, ticket-0028422.pdf
>
>
> The preflight validation of the file ticket-0028422.pdf reports it as invalid
> whereas it is valid according to https://www.pdf-online.com/osa/validate.aspx.
> Calling parse with parameter Format.PDF_A1B, I get a single
> org.apache.pdfbox.preflight.ValidationReport$ValidationError with :
> details : Error on MetaData, Missing field in type definition
> errorCode : 7.5
> isWarning : false
> pageNumber : null
> cause :
> org.apache.xmpbox.xml.XmpParsingException: Missing field in type definition
> at
> org.apache.xmpbox.xml.PdfaExtensionHelper.populatePDFAType(PdfaExtensionHelper.java:210)
> at
> org.apache.xmpbox.xml.PdfaExtensionHelper.populatePDFASchemaType(PdfaExtensionHelper.java:145)
> at
> org.apache.xmpbox.xml.PdfaExtensionHelper.populateSchemaMapping(PdfaExtensionHelper.java:116)
> at org.apache.xmpbox.xml.DomXmpParser.parse(DomXmpParser.java:200)
> 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:163)
> [...]
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