/// <summary>
/// Clones the mapping of another resource.
/// </summary>
/// <param name="other"></param>
void IPropertyMapping.CloneFrom(IPropertyMapping other)
{
if (_dataType != other.DataType)
{
return;
}
if (_value != null && _isList)
{
IList collection = (IList)_value;
collection.Clear();
IList otherCollection = (IList)other.GetValueObject();
foreach (var v in otherCollection)
{
collection.Add(v);
}
_isUnsetValue = other.IsUnsetValue;
}
else
{
_value = (T)other.GetValueObject();
_isUnsetValue = other.IsUnsetValue;
}
}
private void TransferMappingToProperties(IPropertyMapping mapping)
{
if (!_properties.ContainsKey(mapping.Property))
{
_properties.Add(mapping.Property, new HashSet <object>());
}
if (mapping.IsList)
{
foreach (var x in mapping.GetValueObject() as IList)
{
_properties[mapping.Property].Add(x);
}
}
else
{
_properties[mapping.Property].Add(mapping.GetValueObject());
}
}
/// <summary>
/// This method loads the cached Resources for the given MappingProperty from the Storage and returns them.
/// They are instantiated as the defined type. The cache for this mapping property is emptied.
/// </summary>
/// <param name="mapping">Mapping property which should be loaded from cache.</param>
/// <returns>List of formerly cached resources.</returns>
public void LoadCachedValues(IPropertyMapping mapping)
{
if (!Cache.ContainsKey(mapping))
{
return;
}
Type baseType = (mapping.IsList) ? mapping.GenericType : mapping.DataType;
List <Uri> cachedUris = Cache[mapping];
if (!mapping.IsList && cachedUris.Count > 1)
{
throw new Exception(string.Format("An error occured while loading the cached resources for property {0}. Found {1} elements but it is mapped to a non-list property. Try to map to a list of objects.", mapping.PropertyName, cachedUris.Count));
}
foreach (Uri u in cachedUris)
{
object r = null;
if (Model == null)
{
Debugger.Break();
}
if (Model.ContainsResource(u))
{
r = Model.GetResource(u, baseType);
}
else
{
r = Activator.CreateInstance(baseType, u);
}
if (mapping.IsList)
{
IList l = mapping.GetValueObject() as IList;
if (l != null)
{
l.Add(r);
}
}
else
{
mapping.SetOrAddMappedValue(r);
}
}
Cache.Remove(mapping);
}
/// <summary>
/// This method loads the cached Resources for the given MappingProperty from the Storage and returns them.
/// They are instantiated as the defined type. The cache for this mapping property is emptied.
/// </summary>
/// <param name="mapping">Mapping property which should be loaded from cache.</param>
/// <returns>List of formerly cached resources.</returns>
public void LoadCachedValues(IPropertyMapping mapping)
{
if (!Cache.ContainsKey(mapping))
{
return;
}
Type baseType = (mapping.IsList) ? mapping.GenericType : mapping.DataType;
HashSet <Uri> cachedUris = Cache[mapping];
if (!mapping.IsList && cachedUris.Count > 1)
{
throw new Exception(string.Format("An error occured while loading the cached resources for property {0}. Found {1} elements but it is mapped to a non-list property. Try to map to a list of objects.", mapping.PropertyName, cachedUris.Count));
}
foreach (Uri uri in cachedUris)
{
object resource = null;
#if DEBUG
if (Model == null)
{
Debugger.Break();
}
#endif
if (Model.ContainsResource(uri))
{
resource = Model.GetResource(uri, baseType);
}
else
{
resource = Activator.CreateInstance(baseType, uri);
}
if (mapping.IsList)
{
// Getting the reference to the mapped list object
IList list = mapping.GetValueObject() as IList;
if (list != null)
{
// Make sure the resource exits only one time
if (list.Contains(resource))
{
list.Remove(resource);
}
// Add ther resource to the mapped list
list.Add(resource);
}
}
else
{
mapping.SetOrAddMappedValue(resource);
}
}
Cache.Remove(mapping);
}