private int CompareByField(int x, int y, IList path)
{
object xFieldValue = GetFieldValue(x, path);
object yFieldValue = GetFieldValue(y, path);
FieldMetadata field = ((FieldMetadata)path[path.Count - 1]);
return(field.PrepareComparison(_transaction.Context(), xFieldValue).CompareTo(yFieldValue
));
}
internal virtual IPreparedComparison PrepareComparison(ObjectContainerBase container
, object constraint)
{
IContext context = container.Transaction.Context();
if (_fieldMetadata != null)
{
return(_fieldMetadata.PrepareComparison(context, constraint));
}
if (_classMetadata != null)
{
return(_classMetadata.PrepareComparison(context, constraint));
}
IReflector reflector = container.Reflector();
Db4objects.Db4o.Internal.ClassMetadata classMetadata = null;
if (_bytes != null)
{
classMetadata = container.ProduceClassMetadata(reflector.ForObject(constraint));
}
else
{
if (_member != null)
{
classMetadata = container.ClassMetadataForReflectClass(reflector.ForObject(_member
));
}
}
if (classMetadata != null)
{
if (_member != null && _member.GetType().IsArray)
{
ITypeHandler4 arrayElementTypehandler = classMetadata.TypeHandler();
if (reflector.Array().IsNDimensional(MemberClass()))
{
MultidimensionalArrayHandler mah = new MultidimensionalArrayHandler(arrayElementTypehandler
, false);
return(mah.PrepareComparison(context, _member));
}
ArrayHandler ya = new ArrayHandler(arrayElementTypehandler, false);
return(ya.PrepareComparison(context, _member));
}
return(classMetadata.PrepareComparison(context, constraint));
}
return(null);
}
internal virtual IPreparedComparison PrepareComparison(IContext context, object obj
)
{
if (_fieldMetadata != null)
{
return(_fieldMetadata.PrepareComparison(context, obj));
}
if (obj == null)
{
return(Null.Instance);
}
ClassMetadata yc = i_trans.Container().ProduceClassMetadata(i_trans.Reflector().ForObject
(obj));
FieldMetadata yf = yc.FieldMetadataForName(Name());
if (yf != null)
{
return(yf.PrepareComparison(context, obj));
}
return(null);
}