1. 22 May 2008IVOA Trieste: Grid & Web Services1 VOSpace 1.1 Matthew J. Graham (Caltech, NVO) T HE US N ATIONAL V IRTUAL O BSERVATORY

2. Data model 22 May 2008IVOA Trieste: Grid & Web Services2

3. 22 May 2008IVOA Trieste: Grid & Web Services3 Specification - I –Links: extends Node with URI –Containers: extends DataNode handles / in URIs copy is recursive deep copy move and delete act on children too list only matches direct children and wildcards only in last step: a/b/c/*.txt if accepts archive format (tar, zip,etc) will provide access to archive contents as children inheritable properties

4. 22 May 2008IVOA Trieste: Grid & Web Services4 Specification - II Auto-generated names: –.auto is a reserved keyword: vos://service/path/.auto Find: –regex match on [property][value] –and/or operators: regex regex regex – (p1 and p2) or p3

5. 22 May 2008IVOA Trieste: Grid & Web Services5 Specification - III Capabilities to expose 3rd party APIs: some uri

6. Discussion points - I Data model –Should capabilities only exist on the ContainerNode? –Inheritable properties If a property is also declared on a child, which value takes priority? How are properties registered as inheritable? –Container views What are the names of the children nodes (for a container format that is imported to a container node)? Are the children nodes Structured_/_UnstructuredDataNodes? What is the default and is this settable? How does the service identify what it considers to be archive formats? –Capabilities What members other than uri and endpoint should a Capability have, e.g. param to specify additional arguments that might be required for access? 22 May 2008IVOA Trieste: Grid & Web Services6

7. Discussion points - II Web service operations –getCapabilities Do we want this operation (not VOSI)? –createNode Do we need both a LinkFound and a ContainerNotFound exception or does the latter work for both cases? –findNodes Are wildcards allowed in the property URIs - find me all nodes where any property matches this regular expression? –pushToVoSpace If a Node already exists at the target URI and it is a ContainerNode, should it be overwritten by the target Node or should the target Node become a child of the ContainerNode? This also applies to pullToVoSpace. 22 May 2008IVOA Trieste: Grid & Web Services7