[OLINGO-1186] OData 4 parsing older service metadata

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: (Java) V4 4.5.0
• Component/s: odata4-client
• Assignee: Ramesh Reddy
• Reporter: Steven Hawkins
• Created: 21/Sep/17 15:12
• Updated: 03/Aug/18 21:35
• Resolved: 03/Aug/18 21:35

Description

If you point the OData 4 client to older metadata, for example http://services.odata.org/Northwind/Northwind.svc/$metadata the result will be metadata with null values where non-null is expected.

ClientODataDeserializerImpl deserializer = 
                        new ClientODataDeserializerImpl(false, ContentType.APPLICATION_XML);
XMLMetadata serviceMatadata = deserializer.toMetadata(out.getBinaryStream());
CsdlSchema csdlSchema = metadata.getSchemas().get(0);
CsdlEntityContainer container = csdlSchema.getEntityContainer(); 
//container is null

It would be good if XMLMetadata exposed the DataServices version information, or if Olingo could do some check of them when parsing to validate expectations.

This was also captured as https://issues.jboss.org/browse/TEIID-5071