I would like to implement a custom XMP schema and add/read that metadata
using xmpbox.
According to the sources of the schema implementations shipped with
xmpbox I created a simple test schema:
@StructuredType(preferedPrefix = "feed", namespace =
"http://pinnau.biz/dms/feed/elements/1.1/";)
public class FeedXMPSchema extends XMPSchema {
@PropertyType(type = Types.Text, card = Cardinality.Simple)
public static final String IDENTIFIER = "test";
public FeedXMPSchema(XMPMetadata metadata) {
super(metadata);
}
public FeedXMPSchema(XMPMetadata metadata, String prefix) {
super(metadata, prefix);
}
public void setTest(String test) {
addProperty(createTextType(IDENTIFIER, test));
}
public String getTest() {
TextType tt = (TextType) getProperty(IDENTIFIER);
return tt == null ? null : tt.getStringValue();
}
}
It seems that I am able to write metadata to a PDDocument via:
XMPMetadata xmp = XMPMetadata.createXMPMetadata();
PDMetadata metadata = new PDMetadata(doc);
FeedXMPSchema feedSchema = new FeedXMPSchema(xmp);
feedSchema.setTest("This is a test.");
xmp.addSchema(feedSchema);
XmpSerializer serializer = new XmpSerializer();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
serializer.serialize(xmp, baos, true);
metadata.importXMPMetadata( baos.toByteArray() );
doc.getDocumentCatalog().setMetadata(metadata);
Unfortunately an exception is thrown when I try to parse the XMP from
the document:
org.apache.xmpbox.xml.XmpParsingException: Cannot find a definition for
the namespace http://pinnau.biz/dms/feed/elements/1.1/
I believe that the parser does not know of my schema implementation. I
searched for a possibility to register my class somewhere but did not
find a solution.
Is there a way to get this working?
Thanks
--
Viele Grüße
Peter Pinnau
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