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EPOS Database APIs useful to interact with EPOS Metadata Catalogue
package metadataapis;
import abstractapis.AbstractAPI;
import commonapis.*;
import model.*;
import org.epos.eposdatamodel.ContactPoint;
import org.epos.eposdatamodel.LinkedEntity;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.UUID;
public class DistributionAPI extends AbstractAPI {
public DistributionAPI(String entityName, Class edmClass) {
super(entityName, edmClass);
}
@Override
public LinkedEntity create(org.epos.eposdatamodel.Distribution obj) {
List returnList = getDbaccess().getOneFromDB(
obj.getInstanceId(),
obj.getMetaId(),
obj.getUid(),
obj.getVersionId(),
getEdmClass());
if(!returnList.isEmpty()){
obj.setInstanceId(returnList.get(0).getInstanceId());
obj.setMetaId(returnList.get(0).getMetaId());
obj.setUid(returnList.get(0).getUid());
obj.setVersionId(returnList.get(0).getVersionId());
}
obj = (org.epos.eposdatamodel.Distribution) VersioningStatusAPI.checkVersion(obj);
Distribution edmobj = new Distribution();
edmobj.setVersionId(obj.getVersionId());
edmobj.setInstanceId(obj.getInstanceId());
edmobj.setMetaId(obj.getMetaId());
getDbaccess().updateObject(edmobj);
edmobj.setUid(Optional.ofNullable(obj.getUid()).orElse(getEdmClass().getSimpleName()+"/"+UUID.randomUUID().toString()));
edmobj.setFormat(obj.getFormat());
edmobj.setLicense(obj.getLicence());
edmobj.setType(obj.getType());
edmobj.setDatapolicy(obj.getDataPolicy());
if (obj.getModified() != null)
edmobj.setModified(Timestamp.valueOf(obj.getModified()));
if (obj.getIssued() != null)
edmobj.setIssued(Timestamp.valueOf(obj.getIssued()));
/** TITLE **/
if (obj.getTitle() != null && !obj.getTitle().isEmpty()) {
List distributionTitleList = getDbaccess().getAllFromDB(DistributionTitle.class);
for(DistributionTitle item : distributionTitleList){
if(item.getDistributionInstanceId().equals(obj.getInstanceId())){
getDbaccess().deleteObject(item);
}
}
edmobj.setDistributionTitlesByInstanceId(new ArrayList<>());
for(String title : obj.getTitle()){
DistributionTitle pi = new DistributionTitle();
pi.setInstanceId(UUID.randomUUID().toString());
pi.setMetaId(UUID.randomUUID().toString());
pi.setUid("Title/"+UUID.randomUUID().toString());
pi.setVersionId(null);
pi.setTitle(title);
pi.setDistributionByDistributionInstanceId(edmobj);
pi.setDistributionInstanceId(edmobj.getInstanceId());
pi.setLang(null);
edmobj.getDistributionTitlesByInstanceId().add(pi);
dbaccess.updateObject(pi);
}
}
/** DESCRIPTION **/
if (obj.getDescription() != null && !obj.getDescription().isEmpty()) {
List distributionDescriptionList = getDbaccess().getAllFromDB(DistributionDescription.class);
for(DistributionDescription item : distributionDescriptionList){
if(item.getDistributionInstanceId().equals(obj.getInstanceId())){
getDbaccess().deleteObject(item);
}
}
edmobj.setDistributionDescriptionsByInstanceId(new ArrayList<>());
for(String description : obj.getDescription()){
DistributionDescription pi = new DistributionDescription();
pi.setInstanceId(UUID.randomUUID().toString());
pi.setMetaId(UUID.randomUUID().toString());
pi.setUid("Description/"+UUID.randomUUID().toString());
pi.setVersionId(null);
pi.setDescription(description);
pi.setDistributionByDistributionInstanceId(edmobj);
pi.setDistributionInstanceId(edmobj.getInstanceId());
pi.setLang(null);
edmobj.getDistributionDescriptionsByInstanceId().add(pi);
dbaccess.updateObject(pi);
}
}
/** DATAPRODUCT **/
if (obj.getDataProduct() != null && !obj.getDataProduct().isEmpty()) {
List distributionDataproductList = getDbaccess().getAllFromDB(DistributionDataproduct.class);
for(DistributionDataproduct item : distributionDataproductList){
if(item.getDistributionInstanceId().equals(obj.getInstanceId())){
getDbaccess().deleteObject(item);
}
}
DataProductAPI dataProductAPI = new DataProductAPI(EntityNames.DATAPRODUCT.name(), Dataproduct.class);
edmobj.setDistributionDataproductsByInstanceId(new ArrayList<>());
for(LinkedEntity dataProduct : obj.getDataProduct()){
List list = dbaccess.getOneFromDBByInstanceId(dataProduct.getInstanceId(),Dataproduct.class);
Dataproduct dataproduct = null;
if(list.isEmpty()){
LinkedEntity le = LinkedEntityAPI.createFromLinkedEntity(dataProduct);
dataproduct = (Dataproduct) dbaccess.getOneFromDBByInstanceId(le.getInstanceId(), Dataproduct.class).get(0);
} else {
dataproduct = list.get(0);
}
DistributionDataproduct pi = new DistributionDataproduct();
pi.setDistributionByDistributionInstanceId(edmobj);
pi.setDistributionInstanceId(edmobj.getInstanceId());
pi.setDataproductInstanceId(dataproduct.getInstanceId());
pi.setDataproductByDataproductInstanceId(dataproduct);
edmobj.getDistributionDataproductsByInstanceId().add(pi);
dbaccess.updateObject(pi);
}
}
edmobj.setDistributionElementsByInstanceId(new ArrayList<>());
if(obj.getAccessURL()!=null && !obj.getAccessURL().isEmpty()){
for(String accessurl : obj.getAccessURL()) {
createInnerElement(ElementType.ACCESSURL, accessurl, edmobj);
}
}
if(obj.getDownloadURL()!=null && !obj.getDownloadURL().isEmpty()) {
for (String downloadurl : obj.getDownloadURL()) {
createInnerElement(ElementType.DOWNLOADURL, downloadurl, edmobj);
}
}
getDbaccess().updateObject(edmobj);
return new LinkedEntity().entityType(entityName)
.instanceId(edmobj.getInstanceId())
.metaId(edmobj.getMetaId())
.uid(edmobj.getUid());
}
private void createInnerElement(ElementType elementType, String value, Distribution edmobj){
org.epos.eposdatamodel.Element element = new org.epos.eposdatamodel.Element();
element.setType(elementType);
element.setValue(value);
ElementAPI api = new ElementAPI(EntityNames.ELEMENT.name(), Element.class);
LinkedEntity le = api.create(element);
List el = dbaccess.getOneFromDBByInstanceId(le.getInstanceId(), Element.class);
DistributionElement ce = new DistributionElement();
ce.setDistributionByDistributionInstanceId(edmobj);
ce.setDistributionInstanceId(edmobj.getInstanceId());
ce.setElementByElementInstanceId(el.get(0));
ce.setElementInstanceId(el.get(0).getInstanceId());
edmobj.getDistributionElementsByInstanceId().add(ce);
dbaccess.updateObject(ce);
}
@Override
public org.epos.eposdatamodel.Distribution retrieve(String instanceId) {
Distribution edmobj = (Distribution) getDbaccess().getOneFromDBByInstanceId(instanceId, Distribution.class).get(0);
org.epos.eposdatamodel.Distribution o = new org.epos.eposdatamodel.Distribution();
o.setInstanceId(edmobj.getInstanceId());
o.setMetaId(edmobj.getMetaId());
o.setUid(edmobj.getUid());
o.setType(edmobj.getType());
o.setFormat(edmobj.getFormat());
o.setLicence(edmobj.getLicense());
o.setDataPolicy(edmobj.getDatapolicy());
o.setIssued(
edmobj.getIssued() != null ? edmobj.getIssued().toLocalDateTime() : null
);
o.setModified(
edmobj.getModified() != null ? edmobj.getModified().toLocalDateTime() : null
);
o.setType(edmobj.getType());
if(edmobj.getDistributionTitlesByInstanceId().size()>0) {
for(DistributionTitle ed : edmobj.getDistributionTitlesByInstanceId()) {
o.addTitle(ed.getTitle());
}
}
if(edmobj.getDistributionDescriptionsByInstanceId().size()>0) {
for(DistributionDescription ed : edmobj.getDistributionDescriptionsByInstanceId()) {
o.addDescription(ed.getDescription());
}
}
if(edmobj.getDistributionDataproductsByInstanceId().size()>0) {
for(DistributionDataproduct ed : edmobj.getDistributionDataproductsByInstanceId()) {
DataProductAPI api = new DataProductAPI(EntityNames.DATAPRODUCT.name(), Dataproduct.class);
LinkedEntity cp = api.retrieveLinkedEntity(ed.getDataproductInstanceId());
o.addDataproduct(cp);
}
}
if(edmobj.getDistributionElementsByInstanceId().size()>0) {
for(DistributionElement ed : edmobj.getDistributionElementsByInstanceId()) {
Element el = ed.getElementByElementInstanceId();
if(el.getType().equals(ElementType.ACCESSURL)) o.addAccessURL(el.getValue());
if(el.getType().equals(ElementType.DOWNLOADURL)) o.addDownloadURL(el.getValue());
}
}
o = (org.epos.eposdatamodel.Distribution) VersioningStatusAPI.retrieveVersion(o);
return o;
}
@Override
public List retrieveAll() {
List list = getDbaccess().getAllFromDB(Distribution.class);
List returnList = new ArrayList<>();
for(Distribution item : list){
returnList.add(retrieve(item.getInstanceId()));
}
return returnList;
}
@Override
public LinkedEntity retrieveLinkedEntity(String instanceId) {
Distribution edmobj = (Distribution) getDbaccess().getOneFromDBByInstanceId(instanceId, Distribution.class).get(0);
LinkedEntity o = new LinkedEntity();
o.setInstanceId(edmobj.getInstanceId());
o.setMetaId(edmobj.getMetaId());
o.setUid(edmobj.getUid());
o.setEntityType(EntityNames.DISTRIBUTION.name());
return o;
}
}