public PropertyDescriptor GetIdDescriptor(Type targetType)
{
if (_CachedIDs.ContainsKey (targetType))
return (PropertyDescriptor) _CachedIDs [targetType];
foreach (PropertyInfo pi in targetType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
PersistentIdAttribute[] attrs = pi.GetCustomAttributes(
typeof(PersistentIdAttribute), false) as PersistentIdAttribute[];
if (attrs != null && attrs.Length > 0)
{
PersistentIdAttribute pia = attrs[0];
PropertyDescriptor pid = new PropertyDescriptor(pia.FieldName, pi.Name, DescriptorHelper.IsEntity(pi.PropertyType), DescriptorHelper.IsList(pi.PropertyType), DescriptorHelper.IsGenericList(pi.PropertyType), false, pi.PropertyType);
_CachedIDs.Add(targetType, pid);
return pid;
}
}
return null;
}
public PropertyDescriptor GetIdDescriptor_old(Type targetType)
{
_RWL.AcquireReaderLock();
try
{
if (_CachedIDs.ContainsKey(targetType))
return (PropertyDescriptor)_CachedIDs[targetType];
}
finally
{
_RWL.ReleaseReaderLock();
}
_RWL.AcquireWriterLock();
try
{
foreach (PropertyInfo pi in targetType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
FieldInfo fi = null;
// Try to get an attribute for this property
PersistentIdAttribute[] attrs = pi.GetCustomAttributes(
typeof(PersistentIdAttribute), false) as PersistentIdAttribute[];
// Add this property if more than one Attribute
if (attrs != null && attrs.Length > 0)
{
// Takes the first attribute even if more are set
PersistentIdAttribute pia = attrs[0];
if (pia.FieldName != null && pia.FieldName != string.Empty)
fi = targetType.GetField(pia.FieldName, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.IgnoreCase);
}
if (fi == null)
{
string propertyname = String.Concat(targetType.Name, "Id");
if (pi.Name != propertyname && pi.Name != "Id")
continue;
else
if (pi.Name == "Id")
propertyname = "Id";
// Searches for a Field with the default id name but a different case
fi = targetType.GetField(propertyname, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.IgnoreCase);
// If no field was found, searches for _{TypeName}Id
if (fi == null)
fi = targetType.GetField("_" + propertyname, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.IgnoreCase);
// If no field was found, searches for m_{TypeName}Id
if (fi == null)
fi = targetType.GetField("m_" + propertyname, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.IgnoreCase);
// If no field was found, searches for <{PropertyName}>k__BackingField (used by the C# 3.0 compiler for syntactic properties)
if (fi == null)
fi = targetType.GetField("<" + pi.Name + ">k__BackingField", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.IgnoreCase);
}
if (fi != null)
{
PropertyDescriptor pid = new PropertyDescriptor(fi.Name, pi.Name, DescriptorHelper.IsEntity(fi.FieldType), DescriptorHelper.IsList(fi.FieldType), DescriptorHelper.IsGenericList(fi.FieldType), false, fi.FieldType, fi.IsPrivate);
_CachedIDs.Add(targetType, pid);
return pid;
}
}
}
finally
{
_RWL.ReleaseWriterLock();
}
if (targetType.BaseType != null)
return GetIdDescriptor_old(targetType.BaseType);
//If no Id property / _Id field found
return null;
}