Solved: derived attributes in qualifier?
Solved: derived attributes in qualifier?
- Subject: Solved: derived attributes in qualifier?
- From: OC <email@hidden>
- Date: Sun, 13 Mar 2016 15:08:44 +0100
D'oh. Indeed there was a typo in my model (again caused by batch renaming). After fixing, the derived attributes in qualifiers work all right.
Thanks,
OC
On 12. 3. 2016, at 1:23, OC <email@hidden> wrote:
> Is it normal that one can't use derived attributes in qualifier (when fetching), or am I doing something wrong in my model? It seems to me that since they are defined SQL-side, they should be able to limit the fetch, should they not?
>
> Anyway whenever I try to fetch with a qualifier which contains a derived attribute, I get an exception like this:
>
> ===
> Caused by: java.lang.NullPointerException
> at com.webobjects.jdbcadaptor.FrontbasePlugIn.internalTypeForExternal(FrontbasePlugIn.java:477)
> at com.webobjects.jdbcadaptor.FrontbasePlugIn$FrontbaseExpression.formatValueForAttribute(FrontbasePlugIn.java:1397)
> at com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1970)
> at com.webobjects.jdbcadaptor.FrontbasePlugIn$FrontbaseExpression.sqlStringForKeyValueQualifier(FrontbasePlugIn.java:1372)
> at com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
> at er.extensions.ERXExtensions$KeyValueQualifierSQLGenerationSupport.sqlStringForSQLExpression(ERXExtensions.java:339)
> at com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
> at com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
> at com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
> at com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
> at com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
> at com.webobjects.eoaccess.EODatabaseContext._fetchRawRowKeyPaths(EODatabaseContext.java:2968)
> at com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3036)
> at com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
> at com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
> at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
> at er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1308)
> ...
> ===
>
> Thanks a lot,
> OC
>
>
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