private void ParseClassProps(XmlReader xrdr, List<ModelProperty> props)
{
if (xrdr.IsEmptyElement)
{
xrdr.Read();
xrdr.MoveToContent();
return;
}
if (!xrdr.Read()) // <props>
return;
xrdr.MoveToContent();
while (xrdr.IsStartElement())
{
ModelProperty.Types type = ModelProperty.Types.Basic;
switch (xrdr.Name)
{
case "basic": type = ModelProperty.Types.Basic; break;
case "owning": type = ModelProperty.Types.Owning; break;
case "rel": type = ModelProperty.Types.Reference; break;
default: throw new Exception("Expected property element!");
}
string sName = xrdr.GetAttribute("id");
string sSig = xrdr.GetAttribute("sig");
bool fAtomic = xrdr.GetAttribute("card") == "atomic";
ModelProperty mprop = new ModelProperty(sName, type, sSig, fAtomic);
props.Add(mprop);
xrdr.ReadOuterXml(); // swallows any comments or notes on the property.
xrdr.MoveToContent();
}
xrdr.ReadEndElement(); // </props>
xrdr.MoveToContent();
}
/// <summary>
/// If this property's DTD definition would subsume the other property's DTD definition,
/// then return true.
/// </summary>
public bool DtdSubsumes(ModelProperty that)
{
if (this.Equals(that))
return true;
switch (this.Type)
{
case Types.Basic:
if (that.Type != Types.Basic)
return false;
if (this.Sig == that.Sig)
return true;
switch (this.Sig)
{
case "Boolean":
case "GenDate":
case "Guid":
case "Integer":
case "Time":
return (that.Sig == "Boolean" ||
that.Sig == "GenDate" ||
that.Sig == "Guid" ||
that.Sig == "Integer" ||
that.Sig == "Time");
case "Binary":
case "MultiString":
case "MultiUnicode":
case "String":
case "TextPropBinary":
case "Unicode":
break;
}
return false;
case Types.Owning:
case Types.Reference:
if (that.Type == Types.Basic)
return false;
else if (this.IsAtomic == that.IsAtomic)
return true;
else
return that.IsAtomic;
}
return true;
}