Hi Samuel,
FYI, I now managed to define both @OslcValueType & @OslcRange as desired. The compromise was to have URI as the return value of the get method. (Originally,
I claimed that I was not able to define @OSLCRange once I also set @OslcValueType - which is still the case if the return value is the Block Class). So, the following works:
@OslcValueType(ValueType.Resource)
@OslcRange("http://ti.md.kth.se/sim#Block")
public HashSet<URI> getChildren()
Just some further questions based on what you said earlier:
>ValueType.Resource - The resource is represented by a URI, not inline.
I would have thought that @OslcRepresentation controls whether a Resource is represented as inlined or by a URI.
>So I think you want LocalResource with the method signature you have.
Shouldn’t the choice of LocalResource vs. Resource be controlled by whether the resource is stand-alone (Resource) vs only defined within the context of another
resource (Resource)? Or did I misunderstand the meaning of these 2 terms?
>We do some validation of what's returned against the annotations, but not everything is checked. Today, the
>annotations are mainly there to generate resource shapes. We do have an enhancement open to add more validation:
This check is performed at run-time, right? I was hoping that setting the return value to be Block (in my case) can make sure the return value is as expected
at compile-time. Don’t you think there will be a value in that?
Regards
----
Jad El-khoury, PhD
Mechatronics Lab, Department of Machine Design
Royal Institute of Technology (KTH)
S-100 44 Stockholm, Sweden
e-mail: jad@xxxxxx
Phone: +46(0)8 790 6877
Mobile: +46(0)70 773 93 45
From: lyo-dev-bounces@xxxxxxxxxxx [mailto:lyo-dev-bounces@xxxxxxxxxxx]
On Behalf Of Samuel Padgett
Sent: 08 October 2013 02:54
To: Lyo project developer discussions
Cc: Lyo project developer discussions; lyo-dev-bounces@xxxxxxxxxxx
Subject: Re: [lyo-dev] How to use @OslcRange or @ OslcValueType appropriately?
Hi, Jad.
The names are a bit confusing.
ValueType.Resource - The resource is represented by a URI, not inline.
ValueType.LocalResource - The resource is inlined in the response. It can be a blank node or a resource with a URI.
So I think you want LocalResource with the method signature you have.
We do some validation of what's returned against the annotations, but not everything is checked. Today, the annotations are mainly there to generate resource shapes. We do have an enhancement open
to add more validation:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=377512
--
Samuel Padgett | IBM Rational | spadgett@xxxxxxxxxx
Eclipse Lyo: Enabling tool integration with OSLC
Jad
El-Khoury ---10/07/2013 06:30:01 PM---Hi Samuel, Thanks for your reply. I was already using @OslcNamespace and @OslcResourceShape annotati
Hi Samuel,
Thanks for your reply. I was already using @OslcNamespace and @OslcResourceShape annotations, but missed the @OslcSchema. Anyway, even with @OslcSchema, I still have the problem.
Testing with valueType = “ValueType.LocalResource”, I won´t get the exception.
But I do need a “proper” resource, and not just a local one.
So, is it so that choosing “ValueType.Resource”, implies that the return value of the get method should be java.net.URI? That is, @OslcRange does not work with “ValueType.Resource”?
It would have been nice if one can ensure that the return value of the get method is an object of the expected resource type.
Regards
----
Jad El-khoury, PhD
Mechatronics Lab, Department of Machine Design
Royal Institute of Technology (KTH)
S-100 44 Stockholm, Sweden
e-mail:
jad@xxxxxx
Phone: +46(0)8 790 6877
Mobile: +46(0)70 773 93 45
From: lyo-dev-bounces@xxxxxxxxxxx [mailto:lyo-dev-bounces@xxxxxxxxxxx]
On Behalf Of Samuel Padgett
Sent: 07 October 2013 14:50
To: Lyo project developer discussions
Cc: lyo-dev@xxxxxxxxxxx;
lyo-dev-bounces@xxxxxxxxxxx
Subject: Re: [lyo-dev] How to use @OslcRange or @ OslcValueType appropriately?
Hi, Jad. You can definitely define your own Java classes. Make sure your classes have
@OslcNamespace and
@OslcResourceShape annotations on them. I'd also recommend using
@OslcSchema in package-info.java in the same package to define your namespaces.
For @OslcValueType, can you try ValueType.LocalResource? With ValueType.Resource, it expects the resource
to just be a reference and return java.net.URI.
We could do a better job documenting these annotations. You might look at org.eclipse.lyo.client.oslc.resources for some examples.
Let us know how it goes. Thanks!
--
Samuel Padgett | IBM Rational | spadgett@xxxxxxxxxx
Eclipse Lyo: Enabling tool integration with OSLC
Jad
El-Khoury ---10/05/2013 06:57:40 PM---Hi, I am wondering if there are any documentation on how to annotate java class/resource attributes
Hi,
I am wondering if there are any documentation on how to annotate java class/resource attributes properly.
when launching my application, I get the following exception. It seems that I am not setting the @OslcRange or @ OslcValueType appropriately.
javax.servlet.UnavailableException: org.eclipse.lyo.oslc4j.core.exception.OslcCoreInvalidValueTypeException: OSLC007: Invalid value type
http://open-services.net/ns/core#Resource defined for method
getChildren of class se.kth.md.it.ms.resources.Block
at org.apache.wink.server.internal.servlet.RestServlet.init(RestServlet.java:111)
at javax.servlet.GenericServlet.init(GenericServlet.java:244)
...
The guilty method seems to be the following:
@OslcName("children")
@OslcPropertyDefinition(SimulinkAdaptorConstants.SIMULINK_NAMSPACE + "children")
@OslcDescription("the child blocks")
@OslcOccurs(Occurs.ZeroOrMany)
@OslcValueType(ValueType.Resource)
@OslcRange("http://ti.md.kth.se/sim#Block")
@OslcReadOnly(false)
@OslcTitle("Children")
public HashSet<Block> getChildren() {
return children;
}
After a few trials, I can only get it to work, if I do the following:
1. remove the @OslcRange annotation
2. redefine the "children" property to be HashSet<Link>. (that is the function signature becomes "public HashSet<Link> getChildren()")
I also tried to only remove the @OslcRange, but that did not help. One does not seem to be able to define properties other than String, Date, Link, etc.
Is it not possible maybe to define own java classes?
Any hints are appreciated
----
Jad El-khoury, PhD
Mechatronics Lab, Department of Machine Design
Royal Institute of Technology (KTH)
S-100 44 Stockholm, Sweden
e-mail: jad@xxxxxx
Phone: +46(0)8 790 6877
Mobile: +46(0)70 773 93 45
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