RETRIEVING NOT-NULL AND LENGTH ATTRIBUTES

Assembly assembly = this.GetType().Assembly;
string[] resourceNames = assembly.GetManifestResourceNames();

foreach (string resourceName in resourceNames)
{
   if (resourceName.Contains(this.GetType().Name + ".hbm.xml"))
   {
      xmlMapping = new XmlDocument();
      xmlMapping.Load(assembly.GetManifestResourceStream(resourceName));
   }
}

string xpath = "/urn:hibernate-mapping/urn:class/urn:property[@name='{0}']/urn:column";

XmlNamespaceManager nsmgr = new XmlNamespaceManager(this.xmlMapping.NameTable);
nsmgr.AddNamespace("urn", "urn:nhibernate-mapping-2.0");

XmlNode node = this.xmlMapping.SelectSingleNode(String.Format(xpath, property.Name), nsmgr);

int itemp; bool btemp;

if (Int32.TryParse(node.Attributes["length"].Value, out itemp))
{
   length = itemp;
}

if (Boolean.TryParse(node.Attributes["not-null"].Value, out btemp))
{
   notNull = btemp;
}