/// <summary>
/// Brisanje entiteta iz kopije
/// </summary>
/// <param name="rd">Resource description</param>
private void DeleteEntity(ResourceDescription rd)
{
if (rd == null)
{
CommonTrace.WriteTrace(CommonTrace.TraceInfo, "Delete entity is not done because update operation is empty.");
return;
}
try
{
long globalId = rd.Id;
CommonTrace.WriteTrace(CommonTrace.TraceVerbose, "Deleting entity with GID ({0:x16}).", globalId);
//Proveravamo da li GlobalId postoji u kopiji, ako ne postoji zavrsavamo
if (!this.EntityExists(copy, globalId))
{
string message = String.Format("Failed to delete entity because entity with specified GID ({0:x16}) does not exist in network model.", globalId);
CommonTrace.WriteTrace(CommonTrace.TraceError, message);
throw new Exception(message);
}
//Trazimo entitet koji se brise
IdentifiedObject io = GetEntity(copy, globalId);
//Proveravamo da li entitet moze da se brise (moze da se brise ako nije referanciran od drugog entiteta)
if (io.IsReferenced)
{
Dictionary <ModelCode, List <long> > references = new Dictionary <ModelCode, List <long> >();
io.GetReferences(references, TypeOfReference.Target);
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair <ModelCode, List <long> > kvp in references)
{
foreach (long referenceGlobalId in kvp.Value)
{
sb.AppendFormat("0x{0:x16}, ", referenceGlobalId);
}
}
string message = String.Format("Failed to delete entity (GID = 0x{0:x16}) because it is referenced by entities with GIDs: {1}.", globalId, sb.ToString());
CommonTrace.WriteTrace(CommonTrace.TraceError, message);
throw new Exception(message);
}
//Pronadjem sve moled kodove property-a za dati entitet
List <ModelCode> propertyIds = resourcesDescs.GetAllSettablePropertyIdsForEntityId(io.GlobalId);
//Brisem reference
Property property = null;
foreach (ModelCode propertyId in propertyIds)
{
PropertyType propertyType = Property.GetPropertyType(propertyId);
//Ako model kod nije referenca, odbacujemo ga i proveravamo drugi
if (propertyType != PropertyType.Reference)
{
continue;
}
//Ako jeste uzimamo property sa tim model kodom
property = io.GetProperty(propertyId);
//Dobijamo id target entiteta
long targetGlobalId = property.AsReference();
if (targetGlobalId != 0)
{
//Dobijem target entitet i uradim njegov deep copy
IdentifiedObject targetEntity = GetEntity(copy, targetGlobalId);
IdentifiedObject copyTargetEntity = targetEntity.DeepCopy();
//Dobijem kontejner target elementa uradim ShallowCopy kontejnera
DMSType typeTarget = (DMSType)ModelCodeHelper.ExtractTypeFromGlobalId(targetEntity.GlobalId);
ConatinerShallowCopy(typeTarget);
//Zamena originalnog entiteta sa kopijom u novom kontejneru
copy[typeTarget].Entities[copyTargetEntity.GlobalId] = copyTargetEntity;
//Brise se referenca
copyTargetEntity.RemoveReference(propertyId, globalId);
}
}
//Radimo shallow copy kontejnera
DMSType type = (DMSType)ModelCodeHelper.ExtractTypeFromGlobalId(globalId);
ConatinerShallowCopy(type);
Container container = GetContainer(copy, type);
//Brisemo entitet iz kopije
container.RemoveEntity(globalId);
CommonTrace.WriteTrace(CommonTrace.TraceVerbose, "Deleting entity with GID ({0:x16}) successfully finished.", globalId);
}
catch (Exception ex)
{
string message = String.Format("Failed to delete entity (GID = 0x{0:x16}) from model. {1}", rd.Id, ex.Message);
CommonTrace.WriteTrace(CommonTrace.TraceError, message);
throw new Exception(message);
}
}
/// <summary>
/// Deletes resource from the netowrk model.
/// </summary>
/// <param name="rd">Description of the resource that should be deleted</param>
private void DeleteEntity(ResourceDescription rd)
{
if (rd == null)
{
CommonTrace.WriteTrace(CommonTrace.TraceInfo, "Delete entity is not done because update operation is empty.");
return;
}
try
{
long globalId = rd.Id;
CommonTrace.WriteTrace(CommonTrace.TraceVerbose, "Deleting entity with GID ({0:x16}).", globalId);
// check if entity exists
if (!this.EntityExists(globalId))
{
string message = String.Format("Failed to delete entity because entity with specified GID ({0:x16}) does not exist in network model.", globalId);
CommonTrace.WriteTrace(CommonTrace.TraceError, message);
throw new Exception(message);
}
// get entity to be deleted
IdentifiedObject io = GetEntity(globalId);
// check if entity could be deleted (if it is not referenced by any other entity)
if (io.IsReferenced)
{
Dictionary <ModelCode, List <long> > references = new Dictionary <ModelCode, List <long> >();
io.GetReferences(references, TypeOfReference.Target);
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair <ModelCode, List <long> > kvp in references)
{
foreach (long referenceGlobalId in kvp.Value)
{
sb.AppendFormat("0x{0:x16}, ", referenceGlobalId);
}
}
string message = String.Format("Failed to delete entity (GID = 0x{0:x16}) because it is referenced by entities with GIDs: {1}.", globalId, sb.ToString());
CommonTrace.WriteTrace(CommonTrace.TraceError, message);
throw new Exception(message);
}
// find property ids
List <ModelCode> propertyIds = resourcesDescs.GetAllSettablePropertyIdsForEntityId(io.GlobalId);
// remove references
Property property = null;
foreach (ModelCode propertyId in propertyIds)
{
PropertyType propertyType = Property.GetPropertyType(propertyId);
if (propertyType == PropertyType.Reference)
{
property = io.GetProperty(propertyId);
if (propertyType == PropertyType.Reference)
{
// get target entity and remove reference to another entity
long targetGlobalId = property.AsReference();
if (targetGlobalId != 0)
{
// get target entity
IdentifiedObject targetEntity = GetEntity(targetGlobalId);
// remove reference to another entity
targetEntity.RemoveReference(propertyId, globalId);
}
}
}
}
// remove entity form netowrk model
DMSType type = (DMSType)ModelCodeHelper.ExtractTypeFromGlobalId(globalId);
Container container = GetContainer(type);
container.RemoveEntity(globalId);
CommonTrace.WriteTrace(CommonTrace.TraceVerbose, "Deleting entity with GID ({0:x16}) successfully finished.", globalId);
}
catch (Exception ex)
{
string message = String.Format("Failed to delete entity (GID = 0x{0:x16}) from model. {1}", rd.Id, ex.Message);
CommonTrace.WriteTrace(CommonTrace.TraceError, message);
throw new Exception(message);
}
}