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POHibernate mapping and inheritance issues with @SecondaryTable
 

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    <p>I have a pretty simple class hierarchy structure that is listed below, each sub class having a @DiscriminatorValue enumeration type, which works very well.</p> <p><em>Abstract class:</em></p> <p><strong>AbstractNode</strong> (abstract class mapped to the Node table)</p> <p><em>Subclassed classes:</em></p> <p><strong>FieldNode</strong> (simple class mapped to Node table as well, but with different @DiscriminatorValue value)</p> <p><strong>SynonymNode</strong> (problem class, this class also maps to the Node table with a different @DiscriminatorValue value)</p> <p>but <strong>ALSO</strong> has a @SecondaryTable attribute and has extra columns, such as deletedDate, createdDate, etc... each which map to coumns in the table defined in the @SecondaryTable attribute.</p> <p>Im issue comes when I do a simple hibernate query for that Node table</p> <p>I get errors like:</p> <p>org.hibernate.exception.GenericJDBCException: could not execute query ... stack trace ... Caused by: java.sql.SQLException: Invalid column name</p> <p>and in my logs I can see:</p> <p>Hibernate: Select * from vocab_node where lower(name) like '%' || ? || '%'</p> <p>INFO [NullableType.java:132] : could not read column value from result set: DELETED_DATE; Invalid column name</p> <p>My guess is that it finds a row in the DB table, then identifies that is is a <strong>SynonymNode</strong> class type (by the @DiscriminatorValue column) then tries to populate the class including the extra columns table mapped with the @SecondaryTable.</p> <p>How can I tell it to either, left join the @SecondaryTable, or exclude it altogether for this particular query?</p> <p>Thanks heaps! This issue is killing me!</p> <p>Im running Hibernate 3.2.1, and Java 1.5</p> <p>Cheers, Mark</p>
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    1. COI should mention that so far my work around is to left join the @SecondaryTable in my SQL so that at least nulls are returned and the mappings are still correct...
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