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https://issues.apache.org/jira/browse/PDFBOX-6121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18044824#comment-18044824
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Tilman Hausherr commented on PDFBOX-6121:
-----------------------------------------
It turns out that the patch, while correct in logic, doesn't work because
ChatGPT deletes the comments internally. I tried several follow up prompts and
still didn't get a working patch. I asked for the complete code and the
comments were missing. However it now had a new practical method:
{code:java}
private <T> T getPropertyAs(String name, Class<T> type)
{
Object p = getProperty(name);
return type.isInstance(p) ? type.cast(p) : null;
}
{code}
> ClassCastException: class org.apache.xmpbox.type.TextType cannot be cast to
> class org.apache.xmpbox.type.ArrayProperty in
> DublinCoreSchema.getCreatorsProperty()
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: PDFBOX-6121
> URL: https://issues.apache.org/jira/browse/PDFBOX-6121
> Project: PDFBox
> Issue Type: Bug
> Components: XmpBox
> Affects Versions: 2.0.35, 3.0.6 PDFBox
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Fix For: 2.0.36, 3.0.7 PDFBox, 4.0.0
>
> Attachments: 004157.pdf, DublinCoreSchema-safe-casts.patch
>
>
> {noformat}
> java.lang.ClassCastException: class org.apache.xmpbox.type.TextType cannot be
> cast to class org.apache.xmpbox.type.ArrayProperty
> (org.apache.xmpbox.type.TextType and org.apache.xmpbox.type.ArrayProperty are
> in unnamed module of loader 'app')
> at
> org.apache.xmpbox.schema.DublinCoreSchema.getCreatorsProperty(DublinCoreSchema.java:448)
> at
> org.apache.pdfbox.preflight.metadata.SynchronizedMetaDataValidation.analyzeAuthorProperty(SynchronizedMetaDataValidation.java:145)
> at
> org.apache.pdfbox.preflight.metadata.SynchronizedMetaDataValidation.validateMetadataSynchronization(SynchronizedMetaDataValidation.java:461)
> at
> org.apache.pdfbox.preflight.process.MetadataValidationProcess.validate(MetadataValidationProcess.java:91)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:102)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:141)
> at
> org.apache.pdfbox.preflight.PreflightDocument.validate(PreflightDocument.java:157)
> {noformat}
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