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https://issues.apache.org/jira/browse/PDFBOX-2378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17761485#comment-17761485
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Tilman Hausherr commented on PDFBOX-2378:
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- The XMPSerializer isn't to blame, it happens because
{{metadata.getAllSchemas()}} returns only 1 schema
- It happens when parsing
- Only 1 schema processed in {{parseDescriptionRoot}}, only the one of the child
- I suspect that it only looks at the schemas of direct children, not at the
schemas mentioned in the attributes
- createXMPSchema() isn't called often enough
- all these thoughts are not relevant, because
http://www.aiim.org/pdfa/ns/property# and http://www.aiim.org/pdfa/ns/schema#
are of class AbstractStructuredType, not XMPSchema.
Unless I missed something, the result is: either we need to detect and save
these types at the beginning in some extra list, or these types already exist
in {{metadata}} somehow.
> XMPBox removes namespaces on serialization
> ------------------------------------------
>
> Key: PDFBOX-2378
> URL: https://issues.apache.org/jira/browse/PDFBOX-2378
> Project: PDFBox
> Issue Type: Bug
> Components: XmpBox
> Affects Versions: 1.8.7, 2.0.29, 3.0.0 PDFBox, 4.0.0
> Reporter: Vadimo
> Priority: Minor
> Attachments: zf_extension.pdfbox.xmp
>
>
> {code:title=Bar.java|borderStyle=none}
> InputStream zfExtensionIs =
> getClass().getResourceAsStream("/zf_extension.pdfbox.xmp");
> DomXmpParser builder = new DomXmpParser();
> zfDefaultXmp = builder.parse(zfExtensionIs);
> PdfaExtensionHelper.populateSchemaMapping(zfDefaultXmp);
> new XmpSerializer().serialize(zfDefaultXmp, new
> FileOutputStream("target/out.xmp.xml"), true);
> {code}
> the incoming file
> {code:xml|title=incoming.xml|borderStyle=none}
> <rdf:Description
> xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/extension/";
> xmlns:pdfaSchema="http://www.aiim.org/pdfa/ns/schema#";
> xmlns:pdfaProperty="http://www.aiim.org/pdfa/ns/property#"; rdf:about="">
> {code}
> outgoing file
> {code:xml|title=resulting.xml|borderStyle=none}
> <rdf:Description xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/extension/";
> rdf:about="">
> {code}
> why are the two namespaces gone?
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