/**
* Enrich all meta data records with the (blob) content from repository.
*
* @param cr ContentRelation
* @throws WebserverSystemException Thrown if access to repository (Feodra) failed.
*/
private static void enrichWithMetadataContent(final ContentRelationCreate cr) {
final List<MdRecordCreate> mdRecords = cr.getMetadataRecords();
if (mdRecords != null) {
for (final MdRecordCreate mdRecord : mdRecords) {
if (mdRecord.getContent() == null) {
final Datastream ds =
new Datastream(
mdRecord.getName(),
cr.getObjid(),
cr.getProperties().getVersionDate(),
mdRecord.getMimeType(),
mdRecord.getDatastreamLocation(),
mdRecord.getControlGroup());
mdRecord.setContent(new String(ds.getStream(), Charset.forName("UTF-8")));
}
}
}
}
/**
* Retrieve the properties of the last version (RELS-EXT) and inject values into
* ContentRelationCreate object.
*
* @param cr ContentRelation object
* @throws SystemException Thrown in case of internal failure.
* @throws ContentRelationNotFoundException Thrown if resource with provided id could not be found
* in Fedora repository.
*/
private static void setRelsExtValues(final ContentRelationCreate cr)
throws SystemException, ContentRelationNotFoundException {
// retrieve resource with id from Fedora
final Datastream relsExt;
try {
relsExt = new Datastream(Datastream.RELS_EXT_DATASTREAM, cr.getObjid(), null);
} catch (final StreamNotFoundException e) {
throw new ContentRelationNotFoundException(
"Content Relation with id '" + cr.getObjid() + "' could not be found.", e);
}
final StaxParser sp = new StaxParser();
final RelsExtReadHandler eve = new RelsExtReadHandler(sp);
eve.cleanIdentifier(true);
sp.addHandler(eve);
try {
sp.parse(relsExt.getStream());
} catch (final Exception e) {
throw new WebserverSystemException(e);
}
final List<Triple> triples = eve.getElementValues().getTriples();
// write triple values into ContentRelation object
for (final Triple triple : triples) {
if (triple.getPredicate().equals(TripleStoreUtility.PROP_FRAMEWORK_BUILD)) {
cr.setBuildNumber(triple.getObject());
}
// creator --------------
else if (triple.getPredicate().equals(TripleStoreUtility.PROP_CREATED_BY_ID)) {
cr.getProperties().setCreatedById(triple.getObject());
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_CREATED_BY_TITLE)) {
cr.getProperties().setCreatedByName(triple.getObject());
}
// modifier --------------
else if (triple.getPredicate().equals(TripleStoreUtility.PROP_MODIFIED_BY_ID)) {
cr.getProperties().setModifiedById(triple.getObject());
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_MODIFIED_BY_TITLE)) {
cr.getProperties().setModifiedByName(triple.getObject());
}
// public-status --------------
else if (triple.getPredicate().equals(TripleStoreUtility.PROP_PUBLIC_STATUS)) {
final StatusType st;
try {
st = StatusType.getStatusType(triple.getObject());
} catch (final InvalidStatusException e) {
// shouldn't happen
throw new SystemException(e);
}
cr.getProperties().setStatus(st);
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_PUBLIC_STATUS_COMMENT)) {
cr.getProperties().setStatusComment(triple.getObject());
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_OBJECT_TYPE)) {
// this is not the ContentRelation type, this is the type of
// resource
if (!(Constants.CONTENT_RELATION2_OBJECT_TYPE.equals(triple.getObject())
|| (Constants.RDF_NAMESPACE_URI + "Statement").equals(triple.getObject()))) {
throw new WebserverSystemException("Resource is not from type ContentRelation.");
}
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_CONTENT_RELATION_SUBJECT)) {
cr.setSubject(triple.getObject());
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_CONTENT_RELATION_OBJECT)) {
cr.setObject(triple.getObject());
} else if (triple
.getPredicate()
.equals(TripleStoreUtility.PROP_CONTENT_RELATION_DESCRIPTION)) {
cr.getProperties().setDescription(triple.getObject());
} else if (triple.getPredicate().equals(TripleStoreUtility.PROP_CONTENT_RELATION_TYPE)) {
try {
cr.setType(new URI(triple.getObject()));
} catch (final URISyntaxException e) {
// shouldn't happen
throw new SystemException("Stored value for URI in invalid.", e);
}
} else if (triple
.getPredicate()
.equals(TripleStoreUtility.PROP_CONTENT_RELATION_OBJECT_VERSION)) {
cr.setObjectVersion(triple.getObject());
} else {
// add values for mapping
LOGGER.warn("Predicate not mapped " + triple.getPredicate() + " = " + triple.getObject());
}
}
}