/// <summary>
/// Creates the SnapshotOidMap for source object.
/// </summary>
/// <param name="sourceObject">The source object.</param>
/// <param name="targetObject">The target object.</param>
/// <returns></returns>
public static SnapshotOidMap Create(object sourceObject, object targetObject)
{
var targetSession = ((ISessionProvider)targetObject).Session;
var sourceSession = ((ISessionProvider)sourceObject).Session;
/* 11.2.7 */
var modelClass = XafDeltaModule.XafApp.FindModelClass(targetObject.GetType());
var result = new SnapshotOidMap(targetSession)
{
Target = new XPWeakReference(targetSession, targetObject),
// 11.2.7 StoredClassName = targetObject.GetType().FullName
StoredClassName = modelClass.TypeInfo.FullName
};
var sb = new StringBuilder();
sb.AppendFormat("{0}\a{1}\n", XafDeltaModule.Instance.CurrentNodeId,
XPWeakReference.KeyToString(sourceSession.GetKeyValue(sourceObject)));
var maps = OidMap.GetOidMaps((IXPObject)sourceObject);
foreach (var oidMap in maps)
{
sb.AppendFormat("{0}\a{1}\n", oidMap.NodeId, oidMap.ObjectId);
}
result.KnownMapping = sb.ToString();
return(result);
}
/// <summary>
/// Creates for package record.
/// </summary>
/// <param name="objectSpace">The object space.</param>
/// <param name="record">The record.</param>
/// <param name="nodeId">The node id.</param>
/// <returns></returns>
public static ProtocolRecord CreateForPackageRecord(IObjectSpace objectSpace,
PackageRecord record, string nodeId)
{
if (objectSpace == null)
{
throw new ArgumentNullException("objectSpace");
}
if (record == null)
{
throw new ArgumentNullException("record");
}
var session = ((ObjectSpace)objectSpace).Session;
var result = objectSpace.CreateObject <ProtocolRecord>();
if (record.AuditedObject != null && record.AuditedObject.IsAssigned)
{
result.AuditedObject = new AuditedObjectWeakReference(session,
OidMap.FindApplicationObject(objectSpace, record.AuditedObject, nodeId));
}
result.OperationType = record.OperationType;
result.ModifiedOn = record.ModifiedOn;
result.Description = record.Description;
result.NewBlobValue = record.NewBlobValue;
if (record.NewObject != null)
{
result.NewObject = new XPWeakReference(session,
OidMap.FindApplicationObject(objectSpace, record.NewObject, nodeId));
}
if (record.OldObject != null)
{
result.OldObject = new XPWeakReference(session,
OidMap.FindApplicationObject(objectSpace, record.OldObject, nodeId));
}
result.NewValue = record.NewValue;
result.OldValue = record.OldValue;
result.PropertyName = record.PropertyName;
if (record.AuditedObject != null && record.AuditedObject.IsAssigned)
{
result.ReplicationKey = record.AuditedObject.ReplicationKey;
}
return(result);
}
/// <summary>
/// Loads the snapshot object.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="sourceMap">The source map.</param>
/// <returns></returns>
private object loadSnapshotObject(SnapshotLoadContext context, SnapshotOidMap sourceMap)
{
// look for existing object in app database
var result = OidMap.FindApplicationObject(context.ObjectSpace, sourceMap, context.Package.SenderNodeId);
// if not found then create new one
if (result == null)
{
var typeInfo = context.ObjectSpace.TypesInfo.FindTypeInfo(sourceMap.Target.Target.GetType());
result = context.ObjectSpace.CreateObject(typeInfo.Type);
}
// register mapping
updateObjectMapping(context, sourceMap, result);
// restore object's state from snapshot
restoreSnapshotObjectState(context, (IXPObject)sourceMap.Target.Target, (IXPObject)result);
return(result);
}
/// <summary>
/// Updates the object mapping.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="sourceMap">The source map.</param>
/// <param name="appObject">The app object.</param>
private void updateObjectMapping(SnapshotLoadContext context,
IPackageObjectReference sourceMap, object appObject)
{
if (context.UpdatedMapping.Contains(appObject))
{
return;
}
context.UpdatedMapping.Add(appObject);
foreach (var mappingStr in sourceMap.KnownMapping.Split(new[] { '\n' },
StringSplitOptions.RemoveEmptyEntries))
{
var mapArray = mappingStr.Split('\a');
var nodeId = mapArray[0];
var objectId = mapArray[1];
var oidMap = OidMap.GetOidMap(appObject, nodeId);
if (oidMap == null)
{
OidMap.CreateOidMap(context.ObjectSpace, objectId, nodeId, (IXPObject)appObject);
}
}
}
