[OASIS Issue Tracker] Updated: (ODATA-225) Define Functions in Schema; reference in Container using FunctionImport.

[ http://tools.oasis-open.org/issues/browse/ODATA-225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ralf Handl updated ODATA-225:
-----------------------------

    Proposal: 
-Define a <Function> element used to define the shape of a function in the schema. The function definition defines parameters, return values, and may specify an entitysetpath.
-Functions defined in the model are available for use by referencing the model. You do not need to "import them" into your container
-The only time you use a functionimport is if you want to expose a function as a top-level function in your entitycontainer, or find a function to a specific entityset in your entitycontainer. Note that, if the return set is relative to the input set you can define this in the entitysetpath in the <Function> definition of the model, then you don't need to import it unless you want to expose it as a top-level function.
-The FunctionImport always references a <Function> defined in the schema (similar to how an EntitySet always references an EntityType defined in the schema)
-Functions should be bindable to primitive or complex types (or sets of primitive or complex types) in addition to entities/sets of entities. 

Accepted: https://www.oasis-open.org/committees/download.php/48097/odata-meeting-23_on-20130130_31-F2F-minutes.html#odata-225

  was:
-Define a <Function> element used to define the shape of a function in the schema. The function definition defines parameters, return values, and may specify an entitysetpath.
-Functions defined in the model are available for use by referencing the model. You do not need to "import them" into your container
-The only time you use a functionimport is if you want to expose a function as a top-level function in your entitycontainer, or find a function to a specific entityset in your entitycontainer. Note that, if the return set is relative to the input set you can define this in the entitysetpath in the <Function> definition of the model, then you don't need to import it unless you want to expose it as a top-level function.
-The FunctionImport always references a <Function> defined in the schema (similar to how an EntitySet always references an EntityType defined in the schema)
-Functions should be bindable to primitive or complex types (or sets of primitive or complex types) in addition to entities/sets of entities.


> Define Functions in Schema; reference in Container using FunctionImport.
> ------------------------------------------------------------------------
>
>                 Key: ODATA-225
>                 URL: http://tools.oasis-open.org/issues/browse/ODATA-225
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Improvement
>          Components: OData CSDL v1.0
>    Affects Versions: WD01
>         Environment: [Proposed]
>            Reporter: Michael Pizzo
>             Fix For: WD01
>
>
> It is difficult to share functions because they are defined in an entitycontainer.
> Functions should follow a similar model to Entities; the types should be defined in schema and we should use the entitycontainer to expose them at the container level, or to bind to particular sets within the container.

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