Re: Constraint Violations

[Erik Skovgaard <eskovgaard@geotrain.com>]

Jim,

I agree with your interpretation of the standards, however, I have seen a
product that returned a constraint violation when I tried to break the syntax.

BTW, some products do not check for Upper Bounds at all.

Cheers,                    ....Erik.

------------------------------------
Erik Skovgaard
GeoTrain Corp.
Enterprise Directory Planning
http://www.geotrain.com

At 12:06 99/06/21 -0600, Jim Sermersheim wrote:
>When an attribute uses the wrong syntax (or a malformed syntax) I would
>expect to see the invalidAttributeSyntax error.  I think
>constraintViolation is typically used for size and value boundary
>conditions.  There are probably grey areas like C=USA, should that be a
>constraint violation or an invalid syntax?
>
>>>> Erik Skovgaard <eskovgaard@geotrain.com> 6/21/99 11:27:36 AM >>>
>Shiv,
>
>A constraint violation would typically happen if you try and add an
>attribute that either uses the wrong syntax or where the maximum length
>has
>been exceeded.  A very typical example is the postalAddress attribute
>which
>is constrained to a maximum of six lines of 30 characters.  Many of
>the
>database loads I have done seem to stumble here because one or more of
>the
>address components are longer.
>
>I do not have an exhaustive list of situations that may cause problems,
>but
>perhaps this will point you in the right direction.
>
>Cheers,                  ....Erik.
>
>------------------------------------
>Erik Skovgaard
>GeoTrain Corp.
>Enterprise Directory Engineering
>http://www.geotrain.com 
>
>At 11:27 99/06/21 +0530, Shiv Shankar Ramakrishnan wrote:
>>Hi,
>>
>>1. What is the exhaustive list of conditions under which a constraint
>>   violation error occurs? 
>>
>>   I checked with the Netscape C SDK documentation and it doesn't
>seem
>>   to give very exhaustive information. The draft C api text also
>>   doesn't seem to give much info about this. RFC 2251 refers to an
>>   AttributeProblem but doesn't elaborate on it.
>>
>>2. What is the semantic meaning of a constraint violation error? I am
>>   not very clear from the what info I could find on it.
>>
>>3. Is the constraint violation signalled for Syntax violations? E.g.
>If
>>   an attribute has an Integer syntax and some non digit chars are
>sent.
>>
>>   What errors are signalled for attribute syntax violations?
>>
>>   I think none are since in RFC 2251 section 4.1.6 says that -
>>   "Clients MUST NOT send attribute values in a request which are not
>>   valid according to the syntax defined for the attributes."
>>   Then what is the value of specifying a syntax if all the checking
>>   is done by the client? Shouldn't the directory return an error?
>>   Isn't LDAP being too lightweight here :-)
>>
>>4. Where else can I find more info about errors in LDAP as defined by
>>   the v3 spec?
>>
>>Thanks in advance,
>>Shiv
>>
>>
>>
>
>