[teiid-issues] [JBoss JIRA] (TEIID-5559) odata4 NPE when accessing VDB including FK relationship across models

[Steven Hawkins (Jira)]

    [ https://issues.jboss.org/browse/TEIID-5559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13669671#comment-13669671 ] 

Steven Hawkins commented on TEIID-5559:
---------------------------------------

[~rareddy] to address this fully we'd have to make some significant changes.  We'll have to create the olingo schema for every model (or at least on demand as references by fks), then process the fks .  Are you ok heading down that path?  The alternative is to just avoid the exception with a warning.

> odata4 NPE when accessing VDB including FK relationship across models
> ---------------------------------------------------------------------
>
>                 Key: TEIID-5559
>                 URL: https://issues.jboss.org/browse/TEIID-5559
>             Project: Teiid
>          Issue Type: Bug
>          Components: OData
>    Affects Versions: 8.12.16.6_4
>            Reporter: Marc Shirley
>            Assignee: Steven Hawkins
>            Priority: Major
>
> Receive error [2] when attempting to access table that utilizes a foreign key to another model with URL like [1].  access to the other model (that the foreign key references) works correctly.
> [1] http://127.0.0.1:8080/odata4/fktest/fkmodel/
> [2] 
> JBWEB000309: type JBWEB000066: Exception report
> JBWEB000068: message 
> JBWEB000069: description JBWEB000145: The server encountered an internal error that prevented it from fulfilling this request.
> JBWEB000070: exception 
> org.teiid.core.TeiidRuntimeException
> 	org.teiid.olingo.service.ODataSchemaBuilder.buildMetadata(ODataSchemaBuilder.java:58)
> 	org.teiid.olingo.service.OlingoBridge.getHandler(OlingoBridge.java:54)
> 	org.teiid.olingo.web.ODataFilter.internalDoFilter(ODataFilter.java:228)
> 	org.teiid.olingo.web.ODataFilter.doFilter(ODataFilter.java:100)
> 	org.teiid.olingo.web.CorsFilter.doFilter(CorsFilter.java:80)
> JBWEB000071: root cause 
> java.lang.NullPointerException
> 	org.teiid.olingo.service.ODataSchemaBuilder.addReverseNavigation(ODataSchemaBuilder.java:308)
> 	org.teiid.olingo.service.ODataSchemaBuilder.buildNavigationProperties(ODataSchemaBuilder.java:251)
> 	org.teiid.olingo.service.ODataSchemaBuilder.buildEntityTypes(ODataSchemaBuilder.java:144)
> 	org.teiid.olingo.service.ODataSchemaBuilder.buildMetadata(ODataSchemaBuilder.java:54)
> 	org.teiid.olingo.service.OlingoBridge.getHandler(OlingoBridge.java:54)
> 	org.teiid.olingo.web.ODataFilter.internalDoFilter(ODataFilter.java:228)
> 	org.teiid.olingo.web.ODataFilter.doFilter(ODataFilter.java:100)
> 	org.teiid.olingo.web.CorsFilter.doFilter(CorsFilter.java:80)



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