public VDC find(Object pk) {
VDC vdc = (VDC) em.find(VDC.class, pk);
VDCCollection rootCollection = vdc.getRootCollection();
rootCollection.getId();
Collection<VDCCollection> subcollections = rootCollection.getSubCollections();
traverseCollections(subcollections);
return vdc;
}
private void traverseCollections(Collection<VDCCollection> collections) {
for (Iterator it = collections.iterator(); it.hasNext(); ) {
VDCCollection elem = (VDCCollection) it.next();
elem.getId();
Collection<VDCCollection> subcollections = elem.getSubCollections();
if (subcollections.size() > 0) {
traverseCollections(subcollections);
}
}
}
public void delete(Long vdcId) {
VDC vdc = em.find(VDC.class, vdcId);
em.refresh(vdc);
List studyIds = new ArrayList();
// Get the studyIds separately, to avoid a ConcurrentAccess Exception
// (This is necessary because the studies are deleted in Native SQL)
for (Iterator it = vdc.getOwnedStudies().iterator(); it.hasNext(); ) {
Study elem = (Study) it.next();
studyIds.add(elem.getId());
}
if (!studyIds.isEmpty()) {
studyService.deleteStudyList(studyIds);
}
vdc.getOwnedStudies().clear();
vdc.setRootCollection(null);
for (Iterator it = vdc.getOwnedCollections().iterator(); it.hasNext(); ) {
VDCCollection elem = (VDCCollection) it.next();
elem.setParentCollection(null);
elem.setOwner(null);
// Remove this Collection from all linked VDCs
for (Iterator itc = elem.getLinkedVDCs().iterator(); itc.hasNext(); ) {
VDC linkedVDC = (VDC) itc.next();
linkedVDC.getLinkedCollections().remove(elem);
}
}
for (Iterator it = vdc.getLinkedCollections().iterator(); it.hasNext(); ) {
VDCCollection elem = (VDCCollection) it.next();
VDCCollection coll = em.find(VDCCollection.class, elem.getId());
coll.getLinkedVDCs().remove(vdc);
}
for (Iterator it = vdc.getVdcGroups().iterator(); it.hasNext(); ) {
VDCGroup vdcGroup = (VDCGroup) it.next();
vdcGroup.getVdcs().remove(vdc);
}
for (Iterator it = vdc.getVdcRoles().iterator(); it.hasNext(); ) {
VDCRole vdcRole = (VDCRole) it.next();
VDCUser vdcUser = vdcRole.getVdcUser();
vdcUser.getVdcRoles().remove(vdcRole);
}
if (vdc.isHarvestingDv()) {
harvesterService.removeHarvestTimer(vdc.getHarvestingDataverse());
}
// If the vdc Default Template is in the list of dataverse templates
// (not the Network Default Template), then remove the reference before deleting the dataverse.
// If not removed, you will get a foreign key violation when the persistence logic deletes
// the collection of templates.
if (vdc.getTemplates().contains(vdc.getDefaultTemplate())) {
vdc.setDefaultTemplate(null);
}
em.remove(vdc);
}
