private void MergeListRefProperty(IObjectManager om, object obj, IClassMap classMap, IPropertyMap propertyMap, object existing, PropertyStatus propStatus, PropertyStatus extPropStatus, bool forOrgValue, MergeBehaviorType mergeBehavior)
{
IList list = ((IList) om.GetPropertyValue(obj, propertyMap.Name));
IList orgList = ((IList) om.GetPropertyValue(existing, propertyMap.Name));
MergeReferenceLists(list, orgList, om, obj, mergeBehavior, classMap, propertyMap, existing, propStatus, extPropStatus, forOrgValue);
}
private void MergeReferenceLists(IList list, IList orgList, IObjectManager om, object obj, MergeBehaviorType mergeBehavior, IClassMap classMap, IPropertyMap propertyMap, object existing, PropertyStatus propStatus, PropertyStatus extPropStatus, bool forOrgValue)
{
IList objectsToRemove = new ArrayList();
IList objectsToAdd = new ArrayList();
IUnitOfWork uow = this.Context.UnitOfWork;
foreach (object itemOrgObj in orgList)
{
string itemOrgObjId = om.GetObjectIdentity(itemOrgObj);
bool found = false;
foreach (object itemObj in list)
{
string itemObjId = om.GetObjectIdentity(itemObj);
if (itemObjId == itemOrgObjId)
{
found = true;
break;
}
}
if (!found)
objectsToRemove.Add(itemOrgObj);
}
foreach (object itemObj in list)
{
string itemObjId = om.GetObjectIdentity(itemObj);
bool found = false;
foreach (object itemOrgObj in orgList)
{
string itemOrgObjId = om.GetObjectIdentity(itemOrgObj);
if (itemObjId == itemOrgObjId)
{
found = true;
break;
}
}
if (!found)
{
object itemOrgObj = this.Context.GetObjectById(itemObjId, obj.GetType());
objectsToAdd.Add(itemOrgObj);
}
}
if (objectsToRemove.Count > 0 || objectsToAdd.Count > 0)
{
bool keepExisting = KeepExistingValue(list, orgList, mergeBehavior, classMap, propertyMap, existing, obj, propStatus, extPropStatus, forOrgValue);
if (!keepExisting)
{
bool stackMute = false;
IInterceptableList mList = orgList as IInterceptableList;
if (mList != null)
{
stackMute = mList.MuteNotify;
mList.MuteNotify = true;
}
foreach (object itemOrgObj in objectsToRemove)
orgList.Remove(itemOrgObj);
foreach (object itemOrgObj in objectsToAdd)
orgList.Add(itemOrgObj);
if (mList != null) { mList.MuteNotify = stackMute; }
if (propStatus == PropertyStatus.Dirty)
{
uow.RegisterDirty(existing);
om.SetUpdatedStatus(existing, propertyMap.Name, true);
}
}
}
}
private void MergePrimitivePropertyValues(object value, object extValue, PropertyStatus propStatus, PropertyStatus extPropStatus, IObjectManager om, object existing, IClassMap classMap, IPropertyMap propertyMap, object obj, bool forOrgValue, MergeBehaviorType mergeBehavior)
{
if (!value.Equals(extValue)) // May be to naive - possibly should use some advanced method like ComparePropertyValues..
{
bool keepExisting = KeepExistingValue(value, extValue, mergeBehavior, classMap, propertyMap, existing, obj, propStatus, extPropStatus, forOrgValue);
if (!keepExisting)
{
if (forOrgValue)
{
om.SetPropertyValue(existing, propertyMap.Name, value);
om.SetNullValueStatus(existing, propertyMap.Name, om.GetNullValueStatus(obj, propertyMap.Name));
if (propStatus == PropertyStatus.Dirty)
{
this.Context.UnitOfWork.RegisterDirty(existing);
om.SetUpdatedStatus(existing, propertyMap.Name, true);
}
}
else
{
om.SetOriginalPropertyValue(existing, propertyMap.Name, value);
}
}
}
}
private bool KeepExistingValue(object value, object extValue, MergeBehaviorType mergeBehavior, IClassMap classMap, IPropertyMap propertyMap, object existing, object obj, PropertyStatus propStatus, PropertyStatus extPropStatus, bool forOrgValue)
{
bool keepExisting = false;
MergeBehaviorType useMergeBehavior = GetMergeBehavior(mergeBehavior, classMap, propertyMap);
if (useMergeBehavior == MergeBehaviorType.ThrowConcurrencyException)
throw new MergeException("Merge Conflict!", extValue, value, existing, obj, propertyMap.Name, forOrgValue);
//First try: Dirty wins..
if (propStatus == PropertyStatus.Dirty && extPropStatus == PropertyStatus.Dirty)
{
if (useMergeBehavior == MergeBehaviorType.DefaultBehavior)
throw new BothDirtyMergeException("Unresovable Merge Conflict! Both values are dirty!", extValue, value, existing, obj, propertyMap.Name, forOrgValue);
else if (useMergeBehavior == MergeBehaviorType.IgnoreConflictsUsingMergeValue)
keepExisting = false;
else if (useMergeBehavior == MergeBehaviorType.IgnoreConflictsUsingCashedValue)
keepExisting = true;
else
throw new NPersistException("This should be unreachable code...if it is not, that means I made a mistake!" );
}
else if (propStatus == PropertyStatus.Dirty)
keepExisting = false;
else if (extPropStatus == PropertyStatus.Dirty)
keepExisting = true;
else
{
//Second try: Clean wins
if (propStatus == PropertyStatus.Clean && extPropStatus == PropertyStatus.Clean)
{
if (useMergeBehavior == MergeBehaviorType.DefaultBehavior)
throw new BothCleanMergeException("Unresovable Merge Conflict! Both values are clean!", extValue, value, existing, obj, propertyMap.Name, forOrgValue);
else if (useMergeBehavior == MergeBehaviorType.IgnoreConflictsUsingMergeValue)
keepExisting = false;
else if (useMergeBehavior == MergeBehaviorType.IgnoreConflictsUsingCashedValue)
keepExisting = true;
else
throw new NPersistException("This should be unreachable code...if it is not, that means I made a mistake!" );
}
else if (propStatus == PropertyStatus.Clean)
keepExisting = false;
else if (extPropStatus == PropertyStatus.Clean)
keepExisting = true;
else
{
if (extPropStatus == PropertyStatus.NotLoaded)
keepExisting = false;
if (extPropStatus == PropertyStatus.Deleted)
keepExisting = true;
else
throw new NPersistException("This should be unreachable code...if it is not, that means I made a mistake!" );
}
}
return keepExisting;
}
private void MergePrimitiveProperty(IObjectManager om, object obj, IClassMap classMap, IPropertyMap propertyMap, object existing, bool forOrgValue, PropertyStatus propStatus, PropertyStatus extPropStatus, MergeBehaviorType mergeBehavior)
{
if (forOrgValue)
{
object value = om.GetPropertyValue(obj, propertyMap.Name);
object extValue = om.GetPropertyValue(existing, propertyMap.Name);
MergePrimitivePropertyValues(value, extValue, propStatus, extPropStatus, om, existing, classMap, propertyMap, obj, forOrgValue, mergeBehavior);
}
else
{
object orgValue = om.GetOriginalPropertyValue(obj, propertyMap.Name);
object extOrgValue = om.GetOriginalPropertyValue(existing, propertyMap.Name);
MergePrimitivePropertyValues(orgValue, extOrgValue, propStatus, extPropStatus, om, existing, classMap, propertyMap, obj, forOrgValue, mergeBehavior);
}
}
public virtual void MergeObjects(object obj, object existing, MergeBehaviorType mergeBehavior)
{
//What about transfering object status ? ...and property updated status ?
INullValueHelper nullValueHelper = obj as INullValueHelper;
if (nullValueHelper == null)
throw new MissingInterfaceException("Can't merge object of type " + obj.GetType().ToString() + " since it does not implement the interface Puzzle.NPersist.Interface.INullValueHelper!");
IOriginalValueHelper originalValueHelper = obj as IOriginalValueHelper;
if (originalValueHelper == null)
throw new MissingInterfaceException("Can't merge object of type " + obj.GetType().ToString() + " since it does not implement the interface Puzzle.NPersist.Interface.IOriginalValueHelper!");
IUpdatedPropertyTracker updatedPropertyTracker = obj as IUpdatedPropertyTracker;
if (updatedPropertyTracker == null)
throw new MissingInterfaceException("Can't merge object of type " + obj.GetType().ToString() + " since it does not implement the interface Puzzle.NPersist.Interface.IUpdatedPropertyTracker!");
IObjectManager om = this.Context.ObjectManager;
IClassMap classMap = this.Context.DomainMap.MustGetClassMap(obj.GetType());
foreach (IPropertyMap propertyMap in classMap.GetAllPropertyMaps())
{
PropertyStatus propStatus = om.GetPropertyStatus(obj, propertyMap.Name);
PropertyStatus extPropStatus = om.GetPropertyStatus(existing, propertyMap.Name);
if (propStatus == PropertyStatus.Clean || propStatus == PropertyStatus.Dirty)
{
if (propertyMap.ReferenceType == ReferenceType.None)
{
MergePrimitiveProperty(om, obj, classMap, propertyMap, existing, true, propStatus, extPropStatus, mergeBehavior);
MergePrimitiveProperty(om, obj, classMap, propertyMap, existing, false, propStatus, extPropStatus, mergeBehavior);
}
else
{
if (propertyMap.IsCollection)
{
MergeListRefProperty(om, obj, classMap, propertyMap, existing, propStatus, extPropStatus, true, mergeBehavior);
MergeListRefProperty(om, obj, classMap, propertyMap, existing, propStatus, extPropStatus, false, mergeBehavior);
}
else
{
MergeSingleRefProperty(om, obj, classMap, propertyMap, existing, true, propStatus, extPropStatus, mergeBehavior);
MergeSingleRefProperty(om, obj, classMap, propertyMap, existing, false, propStatus, extPropStatus, mergeBehavior);
}
}
}
}
}
public virtual MergeBehaviorType GetMergeBehavior(MergeBehaviorType mergeBehavior, IClassMap classMap, IPropertyMap propertyMap)
{
if (mergeBehavior == MergeBehaviorType.DefaultBehavior)
{
mergeBehavior = propertyMap.MergeBehavior;
if (mergeBehavior == MergeBehaviorType.DefaultBehavior)
{
mergeBehavior = classMap.MergeBehavior;
if (mergeBehavior == MergeBehaviorType.DefaultBehavior)
{
mergeBehavior = classMap.DomainMap.MergeBehavior;
if (mergeBehavior == MergeBehaviorType.DefaultBehavior)
{
mergeBehavior = m_MergeBehavior;
if (mergeBehavior == MergeBehaviorType.DefaultBehavior)
{
mergeBehavior = MergeBehaviorType.TryResolveConflicts;
}
}
}
}
}
return mergeBehavior;
}
private void MergeSingleRefProperty(IObjectManager om, object obj, IClassMap classMap, IPropertyMap propertyMap, object existing, bool forOrgValue, PropertyStatus propStatus, PropertyStatus extPropStatus, MergeBehaviorType mergeBehavior)
{
string extOrgObjId;
string refObjId;
object extRefObj;
object refObj;
object extOrgObj;
if (forOrgValue)
{
refObj = om.GetOriginalPropertyValue(obj, propertyMap.Name);
extOrgObj = om.GetOriginalPropertyValue(existing, propertyMap.Name);
}
else
{
refObj = om.GetPropertyValue(obj, propertyMap.Name);
extOrgObj = om.GetPropertyValue(existing, propertyMap.Name);
}
if (refObj != null && DBNull.Value.Equals(refObj) != true)
{
refObjId = om.GetObjectIdentity(refObj);
extOrgObjId = "";
if (extOrgObj != null)
extOrgObjId = om.GetObjectIdentity(extOrgObj);
if (!refObjId.Equals(extOrgObjId))
{
bool keepExisting = KeepExistingValue(refObj, extOrgObj, mergeBehavior, classMap, propertyMap, existing, obj, propStatus, extPropStatus, forOrgValue);
if (keepExisting != true)
{
extRefObj = this.Context.GetObjectById(refObjId, refObj.GetType());
SetSingleRefPropetyValue(forOrgValue, om, existing, propertyMap, extRefObj, propStatus);
}
}
}
else
{
if (extOrgObj != null)
{
bool keepExisting = KeepExistingValue(refObj, extOrgObj, mergeBehavior, classMap, propertyMap, existing, obj, propStatus, extPropStatus, forOrgValue);
if (keepExisting)
{
SetSingleRefPropetyValue(forOrgValue, om, existing, propertyMap, null, propStatus);
}
}
}
}
private void MergeSingleRefProperty(IObjectManager om, object obj, IClassMap classMap, IPropertyMap propertyMap, object existing, bool forOrgValue, PropertyStatus propStatus, PropertyStatus extPropStatus, MergeBehaviorType mergeBehavior)
{
string extOrgObjId;
string refObjId;
object extRefObj;
object refObj;
object extOrgObj;
if (forOrgValue)
{
refObj = om.GetOriginalPropertyValue(obj, propertyMap.Name);
extOrgObj = om.GetOriginalPropertyValue(existing, propertyMap.Name);
}
else
{
refObj = om.GetPropertyValue(obj, propertyMap.Name);
extOrgObj = om.GetPropertyValue(existing, propertyMap.Name);
}
if (refObj != null && DBNull.Value.Equals(refObj) != true)
{
//hmmmm won't this fail if we have two objects of different classes but with the same id?
//probably the type should be included (and preferably change to KeyStruct comparisons...)
refObjId = om.GetObjectIdentity(refObj);
extOrgObjId = "";
if (extOrgObj != null)
extOrgObjId = om.GetObjectIdentity(extOrgObj);
if (!refObjId.Equals(extOrgObjId))
{
bool keepExisting = KeepExistingValue(refObj, extOrgObj, mergeBehavior, classMap, propertyMap, existing, obj, propStatus, extPropStatus, forOrgValue);
if (keepExisting != true)
{
extRefObj = this.Context.GetObjectById(refObjId, refObj.GetType());
SetSingleRefPropetyValue(forOrgValue, om, existing, propertyMap, extRefObj, propStatus);
}
}
}
else
{
if (extOrgObj != null)
{
bool keepExisting = KeepExistingValue(refObj, extOrgObj, mergeBehavior, classMap, propertyMap, existing, obj, propStatus, extPropStatus, forOrgValue);
if (keepExisting)
{
SetSingleRefPropetyValue(forOrgValue, om, existing, propertyMap, null, propStatus);
}
}
}
}
