On Mar 15, 2007, at 7:33 AM, dejw wrote:
Hi,
maybe some example what I meant so far:
The case is when I get ActivityIdentifier from BES service which is as the BES schema says:
<xsd:element name="ActivityIdentifier" type="wsa:EndpointReferenceType"/>
and wsa:EndpointReferenceType is:
<xs:complexType name="EndpointReferenceType" mixed="false"> <xs:sequence> <xs:element name="Address" type="tns:AttributedURIType"/> <xs:element name="ReferenceParameters" type="tns:ReferenceParametersType" minOccurs="0"/> <xs:element ref="tns:Metadata" minOccurs="0"/> <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> <xs:anyAttribute namespace="##other" processContents="lax"/> </xs:complexType>
So as you can see I can have always Address so uri of target service, and its ok here. But the problem is with 'ReferenceParameters'. The definition of this is:
<xs:complexType name="ReferenceParametersType" mixed="false"> <xs:sequence> <xs:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> <xs:anyAttribute namespace="##other" processContents="lax"/> </xs:complexType>
So it can contain any xml blob. And many BES services have their own xml here inside it. So I as a programmer have to parse these xml's and get the job id which is always some string and that's all. So I think this xml is useless here unless it is common for every service.
The endpoint reference type is a web services standard way of describing how to contact a web service, potentially including references to some state managed by the service via the ReferenceParameters (these are similar in concept to http cookies). The ReferenceParameters are to be considered an opaque data block to service clients. There is no guarantee that any sort of meaningful local identifier will be present in the EPR. It is meant to be used by the Web Service hosting system to address Web Service operation requests to the particular stateful resource associated with the created activity.
Now I have to now what "type" of underlying system I have i.e. crown, unicore, gridsam etc. and then I have to built a little different ActivityIdentifier to get job status for example. It's a little strange.
The EndpointReferenceType can be sent in the body of the GetActivityStatus operation directly. Why do you think you need to know about the contents of the EPR? joe