[jira] [Commented] (OLINGO-526) Use of uni-directional @OneToMany leads to an exception

["Michael Bolz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OLINGO-526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14253337#comment-14253337 ] 

Michael Bolz commented on OLINGO-526:
-------------------------------------

If the connection is made bi-directional the issue does not occur.

Example:
{code}
@JoinColumn(name = "requestForQuotationUUID", referencedColumnName = "requestForQuotationUUID", insertable = false, updatable = false)
@ManyToOne
private RequestForQuotation requestForQuotation;
{code}
and
{code}
//  @JoinColumn(name = "requestForQuotationUUID", referencedColumnName = "requestForQuotationUUID")
@OneToMany(mappedBy = "requestForQuotation", cascade = CascadeType.ALL)
private List<Quotation> quotation;
{code}

> Use of uni-directional @OneToMany leads to an exception
> -------------------------------------------------------
>
>                 Key: OLINGO-526
>                 URL: https://issues.apache.org/jira/browse/OLINGO-526
>             Project: Olingo
>          Issue Type: Bug
>          Components: odata2-jpa
>    Affects Versions: V2 2.0.1
>            Reporter: Michael Bolz
>
> Issue occurs with use of {{JPA Processor Extension}}.
> If a uni-directional {{@OneToMany}} is used the creation of the {{metamodel}} fails with following exception:
> {code}
> java.lang.IllegalArgumentException
> No [EntityType] was found for the key class [java.util.List] in the Metamodel - please verify that the [Entity] class was referenced in persistence.xml using a specific <class>java.util.List</class> property or a global <exclude-unlisted-classes>false</exclude-unlisted-classes> element.
> {code}
> in
> {code}
> org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl entityEmbeddableManagedTypeNotFound  173
> org.apache.olingo.odata2.core.ep.AtomEntityProvider writeServiceDocument 157
> {code}
> Example code:
> {code}
> 	@OneToMany
> 	@JoinColumn(name = "requestForQuotationUUID", referencedColumnName = "requestForQuotationUUID")
> 	private List<Quotation> quotation;
> {code}



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