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https://issues.apache.org/jira/browse/OLINGO-1020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Bolz updated OLINGO-1020:
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Component/s: odata2-jpa
> Association Multiplicity cannot set to 0..1 just 1
> --------------------------------------------------
>
> Key: OLINGO-1020
> URL: https://issues.apache.org/jira/browse/OLINGO-1020
> Project: Olingo
> Issue Type: Bug
> Components: odata2-jpa
> Affects Versions: V2 2.0.7
> Reporter: Zoltan Beleznay
> Assignee: Michael Bolz
>
> Association Multiplicity cannot set to 0..1 just 1
> We created some navigation like the following (in the many side):
> @ManyToOne
> @PrimaryKeyJoinColumn(name = "SIDE_ONE_OBJECT_ID")
> private OneObject parentOneObject;
> and from the other side:
> @OneToMany(mappedBy = "parentOneObject")
> private List<ManyObject> manyObjects;
> but it creates the following part of the metadata:
> <Association Name="ManyObject_OneObject_One_Many0">
> <End Type="Service.ManyObject" Multiplicity="*"
> Role="ManyObject"/>
> <End Type="Service.OneObject" Multiplicity="1"
> Role="OneObject"/>
> </Association>
> We would like to see in the one side the 0..1 multiplicity, so we changed the
> annotations to the following:
> @ManyToOne(optional = true)
> @JoinColumn(name = "ACTION_PARENT_WORK_PACKAGE_ID", insertable = false,
> updatable = false, nullable = true)
> private OneObject parentOneObject;
> and from the other side:
> @OneToMany(mappedBy = "parentOneObject")
> private List<ManyObject> manyObjects;
> We expected the following result in metadata:
> <Association Name="ManyObject_OneObject_One_Many0">
> <End Type="Service.ManyObject" Multiplicity="*"
> Role="ManyObject"/>
> <End Type="Service.OneObject" Multiplicity="0..1"
> Role="OneObject"/>
> </Association>
> But it did not bring us the expected behaviour and the corresponding part of
> the metadata remained the same.
> The 0..1 is accesible via the EdmMultiplicity.ZERO_TO_ONE enum, and it is
> part of the OData documentation.
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