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https://issues.apache.org/jira/browse/OPENJPA-761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Albert Lee resolved OPENJPA-761.
--------------------------------

    Resolution: Fixed

> SchemaTool failed with a NPE in ForeignKey.join
> -----------------------------------------------
>
>                 Key: OPENJPA-761
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-761
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jdbc
>    Affects Versions: 1.0.4, 1.1.1, 1.2.1, 1.3.0, 2.0.0
>            Reporter: Albert Lee
>            Assignee: Albert Lee
>            Priority: Minor
>             Fix For: 1.3.0, 2.0.0
>
>
> A test used the SchemaTool to reflect "all" schema in a Oracle DB but run in 
> a NPE as observed below:
>      [exec] 131  INFO   [main] openjpa.jdbc.JDBC - Using dictionary class 
> "com.ibm.ws.persistence.jdbc.sql.OracleDictionary".
>      [exec] 1127  INFO   [main] openjpa.Tool - Reflecting on schemas "all".  
> This process may take some time.  Enable the org.apache.openjpa.jdbc.Schema 
> logging category to see messages about the collection of schema data.
>      [exec] Exception in thread "main" java.lang.NullPointerException
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.ForeignKey.join(ForeignKey.java:521)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaGenerator.generateForeignKeys(SchemaGenerator.java:794)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaGenerator.generateForeignKeys(SchemaGenerator.java:431)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaGenerator.generateSchemas(SchemaGenerator.java:278)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaGenerator.generateSchemas(SchemaGenerator.java:243)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaTool.run(SchemaTool.java:1433)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaTool.run(SchemaTool.java:1403)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaTool$1.run(SchemaTool.java:1348)
>      [exec]   at 
> org.apache.openjpa.lib.conf.Configurations.launchRunnable(Configurations.java:708)
>      [exec]   at 
> org.apache.openjpa.lib.conf.Configurations.runAgainstAllAnchors(Configurations.java:693)
>      [exec]   at 
> org.apache.openjpa.jdbc.schema.SchemaTool.main(SchemaTool.java:1343)
> Albert Lee

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