Is the MIMETYPE attribute realy mandatory for <mets:file>

java.lang.IllegalArgumentException: MIMETYPE or ID of a mets:file must not be null
	at org.mycore.mets.model.Mets.createFileSec(Mets.java:420)
	at org.mycore.mets.model.Mets.<init>(Mets.java:140)
	at org.mycore.mets.iiif.MCRMetsMods2IIIFConverter.<init>(MCRMetsMods2IIIFConverter.java:89)

from org.mycore.mets.model.Mets:

 for (Element aFile : filesXP.evaluate(aFileGroup)) {
                String id = aFile.getAttributeValue("ID");
                String mimeType = aFile.getAttributeValue("MIMETYPE");
                if (id == null || mimeType == null) {
                    throw new IllegalArgumentException("MIMETYPE or ID of a mets:file must not be null");
                }
  }

java.util.concurrent.CompletionException: java.lang.StringIndexOutOfBoundsException: begin -1, end 34, length 34
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1807)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.StringIndexOutOfBoundsException: begin -1, end 34, length 34
	at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4601)
	at java.base/java.lang.String.substring(String.java:2704)
	at java.base/java.lang.String.substring(String.java:2677)
	at de.uni_jena.thulb.archive.media.MediaService.isMediaSupported(MediaService.java:180)
	at de.uni_jena.thulb.archive.media.events.MediaEventHandler.encodeMediaFile(MediaEventHandler.java:91)
	at de.uni_jena.thulb.archive.media.events.MediaEventHandler.lambda$handlePathCreated$2(MediaEventHandler.java:75)
	at org.mycore.util.concurrent.MCRTransactionableRunnable.run(MCRTransactionableRunnable.java:82)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804)

Desciption

Currently, mets-model fails to convert mets:structMap[@TYPE="LOGICAL"] document section into it's model, if this contains other elements than fptr or div - for example, it might also contain mptr elements.

If Mets#processLogicalChildren encounters mptr elements, the whole subtree will be ignored. This is even worse, since both fptrand mptrelements must be placed before any sibbling divs, so everything will be lost starting with this level.

org.jdom2.JDOMException: Encountered a SAX exception processing the Document: 
	at org.jdom2.transform.JDOMSource$DocumentReader.parse(JDOMSource.java:565)
	at java.xml/com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.validate(ValidatorHandlerImpl.java:731)
	at java.xml/com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl.validate(ValidatorImpl.java:101)
	at java.xml/javax.xml.validation.Validator.validate(Validator.java:124)
	at org.mycore.mets.model.Mets.isValid(Mets.java:662)
	at org.mycore.mets.model.Mets.<init>(Mets.java:135)
	at org.mycore.mets.iiif.MCRMetsMods2IIIFConverter.<init>(MCRMetsMods2IIIFConverter.java:89)
...
Caused by: org.xml.sax.SAXParseException; cvc-type.3.1.1: Element 'mets:note' ist Simple Type und kann daher keine Attribute haben, mit Ausnahme der Attribute, deren Namespace-Name mit 'http://www.w3.org/2001/XMLSchema-instance' identisch ist und deren [lokaler Name] 'type', 'nil', 'schemaLocation' oder 'noNamespaceSchemaLocation' lautet. Es wurde allerdings das Attribut 'ubr:uri' gefunden.
	at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:204)
	at java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:135)
	at java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)

in Mayx 2018 - Version .12 the METS XML Schema was extended:

Added xsd:anyAttribute with namespace ##other and processContents lax to these elements: agent/note

Please update the internal METS-Schema that my METS document can be validated and parsed!!!