Shibboleth Developers

[Markus Ludwig Grandpre <>]

I wonder how the Shibboleth2 LdapDataConnector gains access to any 
AttributeDefinition object that declares a reference/dependency to this 
connector e.g.

<resolver:AttributeDefinition
 id="eduPersonEntitlement"
 ...
 <resolver:Dependency ref="myLDAP" />

whereby the DataConnector of the LdapDataConnector does not
declare any dependency to AttributeDefinitions at all:

<resolver:DataConnector
  id="myLDAP"
  xsi:type="LDAPDirectory"
  xmlns="urn:mace:shibboleth:2.0:resolver:dc"
  ...
 </resolver:DataConnector>

I've followed the LdapDataConnector implementation and used parts of it 
for my own DataConnector implementation, but getting null values all the 
time.

What went wrong?

Markus


Chad La Joie wrote:
> A plugin only has access to its dependencies, not those things which
> depend on it.
>
> What you have now is still not right.  Either eduPerson* depends on your
> data connector or you data connector depends on them.  The attribute
> resolver has code in it that protects it from cyclic dependencies
> causing any damage to the system but you probably won't get the results
> you're looking for like this.
>
> Markus Ludwig Grandpre wrote:
> > So
> >
> >  <resolver:Dependency ref="myShibboleth" /> (AttributeDefinition)
> >
> > and
> >
> >  <resolver:DataConnector id="myShibboleth" ... />
> >
> > are not sufficient to retrieve all referenced AttributeDefiniton objects?
> >
> > Okay then, I will try something like this:
> >
> > <resolver:AttributeDefinition
> >  id="eduPersonPrincipalName"
> >  ...
> >  <resolver:Dependency ref="myShibboleth" />
> >  ...
> > </resolver:AttributeDefinition>
> >
> > <resolver:AttributeDefinition
> >  id="eduPersonEntitlement"
> >  ...
> >  <resolver:Dependency ref="myShibboleth" />
> >  ...
> > </resolver:AttributeDefinition>
> >
> >
> > <resolver:DataConnector
> >  id="myShibboleth"
> >  xsi:type="MyShibbolethDataConnector"
> >  xmlns="urn:mace:unikn:shibboleth:resolver"
> >  ...
> >  <resolver:Dependency ref="eduPersonPrincipalName" />
> >  <resolver:Dependency ref="eduPersonEntitlement"/>
> >  ...
> > </resolver:DataConnector>
> >
> > Will this do?
> >
> > Markus
> >
> >
> > Chad La Joie wrote:
> > > Yes, that is your data connector, and as I said, there are no
> > > dependencies defined.
> > >
> > > Markus Ludwig Grandpre wrote:
> > > > All right, but what config snippet do you mean? This one:
> > > >
> > > >  <resolver:DataConnector
> > > >   id="myShibboleth"
> > > >   xsi:type="MyShibbolethDataConnector"
> > > >   xmlns="urn:mace:unikn:shibboleth:resolver"
> > > >   attr1="test"/>
> > > >
> > > > ??
> > > >
> > > > Markus
> > > >
> > > > Chad La Joie wrote:
> > > > > Right, if you don't define any dependencies then, when you ask for the
> > > > > dependencies you get a null set.  In the config snippet you sent you
> > > > > are
> > > > > not defining any dependencies so this would be the expected behavior.
> > > > >
> > > > > Markus Ludwig Grandpre wrote:
> > > > > > There's a problem with dependencies. If I try to get them, null is
> > > > > > returned: