public static ObjectViewParameterLoader TryCreate(
MetadataObjectView view,
string name)
{
MetadataVirtualProperty metadataVirtualProperty = view.VirtualProperties.Find(name);
if (metadataVirtualProperty == null)
{
return((ObjectViewParameterLoader)null);
}
MemberValueGetter memberValueGetter = metadataVirtualProperty.RefMemberType != MetadataClassMember.ObjectView ? (MemberValueGetter) new PropertyValueGetter(metadataVirtualProperty.RefMemberName) : (MemberValueGetter) new ObjectViewTextGetter(metadataVirtualProperty.RefMemberName);
if (metadataVirtualProperty.SourceMember is MetadataAssociation sourceMember)
{
return((ObjectViewParameterLoader) new ObjectViewVirtualPropertyLoader(new Navigator[1]
{
(Navigator) new AssociationNavigator(sourceMember.Property.Name, (MetadataClass)null)
}, memberValueGetter, ObjectViewVirtualPropertyLoader.ValueCardinality.Single));
}
if (!(metadataVirtualProperty.SourceMember is MetadataChildRef sourceMember))
{
return((ObjectViewParameterLoader) new ObjectViewVirtualPropertyLoader(Navigator.ParseNavigation(view.Class, metadataVirtualProperty.SourceNavigation), memberValueGetter, ObjectViewVirtualPropertyLoader.ValueCardinality.Multiple));
}
return((ObjectViewParameterLoader) new ObjectViewVirtualPropertyLoader(new Navigator[1]
{
(Navigator) new ChildRefNavigator(sourceMember.ChildClass)
}, memberValueGetter, ObjectViewVirtualPropertyLoader.ValueCardinality.Multiple));
}
private static int GetOneOf(
XmlNode node,
string attrName1,
string attrName2,
string attrName3,
out string value)
{
if (MetadataVirtualProperty.TryGetNotEmptyAttribute(node, attrName1, out value))
{
return(1);
}
if (MetadataVirtualProperty.TryGetNotEmptyAttribute(node, attrName2, out value))
{
return(2);
}
return(MetadataVirtualProperty.TryGetNotEmptyAttribute(node, attrName3, out value) ? 3 : 0);
}
internal MetadataVirtualProperty(MetadataObjectView view, XmlNode sourceNode)
{
this.View = view;
this.SourceNode = sourceNode;
this.Name = XmlUtils.NeedAttr(sourceNode, "name");
string str;
switch (MetadataVirtualProperty.GetOneOf(sourceNode, "association", "aggregation", "navigation", out str))
{
case 1:
this.SourceMember = (object)view.Class.Associations.Need(str);
break;
case 2:
this.SourceMember = (object)view.Class.Childs.Need(str);
break;
case 3:
this.SourceNavigation = XmlUtils.GetAttr(sourceNode, "navigation", (string)null);
break;
default:
throw new MetadataException(string.Format("Не заданы атрибуты \"association\" или \"aggregation\" или \"navigation\" ({0})", (object)this));
}
switch (MetadataVirtualProperty.GetOneOf(sourceNode, "ref-property", "ref-view", (string)null, out this.RefMemberName))
{
case 1:
this.RefMemberType = MetadataClassMember.Property;
break;
case 2:
this.RefMemberType = MetadataClassMember.ObjectView;
break;
default:
this.RefMemberType = MetadataClassMember.ObjectView;
this.RefMemberName = "default";
break;
}
}
