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Michael Bolz edited comment on OLINGO-526 at 12/22/14 6:35 AM: --------------------------------------------------------------- Hi [~chandan.v.a], unfortunately, if I change my model to uni-directional with no field in {{Quotation}} and following code in {{RequestForQuotation}}: {code} @JoinColumn(name = "requestForQuotationUUID", referencedColumnName = "requestForQuotationUUID") private List<Quotation> quotation; {code} and then do a call to get the metamodel {{http://localhost:8080/peopledirectory.svc/$metadata}} it result in a {{NullPointerException}} with following (shortened) StackTrace : {code} org.apache.olingo.odata2.jpa.processor.core.access.model.JPAEdmNameBuilder build 175 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmProperty$JPAEdmPropertyBuilder buildSimpleProperty 335 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmProperty$JPAEdmPropertyBuilder buildForeignKey 419 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmProperty$JPAEdmPropertyBuilder addForeignKey 364 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmProperty$JPAEdmPropertyBuilder build 279 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmEntityType$JPAEdmEntityTypeBuilder build 128 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmEntitySet$JPAEdmEntitySetBuilder build 89 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmEntityContainer$JPAEdmEntityContainerBuilder build 117 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmSchema$JPAEdmSchemaBuilder build 119 org.apache.olingo.odata2.jpa.processor.core.model.JPAEdmModel$JPAEdmModelBuilder build 61 org.apache.olingo.odata2.jpa.processor.core.edm.ODataJPAEdmProvider getSchemas 282 org.apache.olingo.odata2.core.edm.provider.EdmServiceMetadataImplProv getDataServiceVersion 102 org.apache.olingo.odata2.api.processor.ODataSingleProcessor readMetadata 378 {code} Kind regards, Michael was (Author: mirbo): Hi [~chandan.v.a], unfortunately, if I change my model to uni-directional with no field in {{Quotation}} and following code in {{RequestForQuotation}}: {code} @JoinColumn(name = "requestForQuotationUUID", referencedColumnName = "requestForQuotationUUID") private List<Quotation> quotation; {code} and then do a call to get the metamodel {{http://localhost:8080/peopledirectory.svc/$metadata}} it results still in following error: {code} <error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"> <code/> <message xml:lang="en">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.</message> </error> {code} Kind regards, Michael > 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 > Assignee: Chandan V.A > Fix For: V2 2.0.2 > > > 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} > For {{JPA}} following dependencies are used: > {code} > <dependency> > <groupId>org.eclipse.persistence</groupId> > <artifactId>eclipselink</artifactId> > <version>2.5.1</version> > </dependency> > {code} > which transitive use {{org.eclipse.persistence:javax.persistence:jar:2.1.0}}. -- This message was sent by Atlassian JIRA (v6.3.4#6332)