Bas van Meurs created OLINGO-1557:
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Summary: $it refers to the wrong entitytype
Key: OLINGO-1557
URL: https://issues.apache.org/jira/browse/OLINGO-1557
Project: Olingo
Issue Type: Bug
Components: odata4-server
Affects Versions: (Java) V4 4.8.0
Reporter: Bas van Meurs
OData specs on $it:
[http://docs.oasis-open.org/odata/odata/v4.0/os/part2-url-conventions/odata-v4.0-os-part2-url-conventions.html#_Toc372793854]
Shows the following example:
http://host/service/Customers?$expand=Orders($filter=$it/Address/City eq
ShipTo/City)
*$it* from the $expand clause should refer to {*}Customers{*}, as stated in the
specs.
But when using the Olingo server project, the following similar URL fails:
[http://localhost:8080/OData/V1.0/ResourceCollection?$expand=Resource_ResourcedepartmentCollection($filter=$it/ResourceClass%20gt%205)]
An exception is thrown by parsePropertyPathExpr in ExpressionParser.java:
{"error":\{"code":null,"message":"The property 'ResourceClass', used in a query
expression, is not defined in type 'Planning.Resourcedepartment'."}}
This is failure *incorrect* AFAIK.
Analogous to the OData specs example, $it should refer to Resource
(ResourceCollection's entity type), which does contain the ResourceClass
column. The URL should thus be accepted.
For reference, some $metadata:
{{{}<EntityType Name="Resource">{}}}{{{}{}}}
<Key>
<PropertyRef Name="Id"/>
</Key>
<Property Name="Id" Type="Edm.Int32" Nullable="false">
<Annotation Qualifier="readonly">
<Bool>true</Bool>
</Annotation>
</Property>
<Property Name="ExternalId" Type="Edm.String" Nullable="false" MaxLength="255"/>
<Property Name="ResourceClass" Type="Edm.Int32" Nullable="false"/>
<Property Name="SortIndex" Type="Edm.Int32" Nullable="false"/>
<Property Name="Number" Type="Edm.String" Nullable="false" MaxLength="255"/>
<Property Name="Description" Type="Edm.String" Nullable="false"
MaxLength="255"/>
<Property Name="Firstname" Type="Edm.String" Nullable="false" MaxLength="255"/>
<Property Name="LastnamePrefix" Type="Edm.String" Nullable="false"
MaxLength="255"/> ...
{{{}<EntitySet Name="ResourceCollection"
EntityType="Planning.Resource">{}}}{{{}{}}}
...
<NavigationPropertyBinding Path="Resource_ResourcedepartmentCollection"
Target="ResourcedepartmentCollection"/>
{{{}{}}}{{{}...{}}}{{{}</EntitySet>{}}}
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