Let code generator reflect PostgreSQL table inheritance in generated tables, records, pojos, daos

[lukaseder]

PostgreSQL is an ORDBMS, supporting table inheritance, which might map quite nicely to Java class inheritance. This could be leveraged by the code generator, adding some more semantics to generated artefacts.

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This was also requested here:

• https://groups.google.com/forum/#!topic/jooq-user/9X_0gROVIf8
• https://groups.google.com/forum/#!topic/jooq-user/xp-crsQOQjY

See also

• Add support for the PostgreSQL ONLY clause #2776
• Generate intoParentTable() and intoChildTable() methods on PostgreSQL table inheritance structures #2782

[lukaseder]

Modelling inheritance in jOOQ's table hierarchy might not be so easy because of the fact that generated tables terminate the generic-self-bound on <R> as documented here:
http://blog.jooq.org/the-dangers-of-correlating-subtype-polymorphism-with-generic-polymorphism/

Tampering with this type hierarchy could be very complicated