sql - How to select a table dynamically with HSQLDB and Hibernate? -

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i have table references other tables. stored table name , entity id.

like this:

         ref_table     id  | table_name | refid -------+------------+-------     1  |   test     |   6     2  |   test     |   9     3  |   other    |   5

now try formulate sql/function returns correct entities correct tables. like:

select * resolveid(3)

i expect entity id "5" table "other". possible? guess can stored procedure (create function). function have inspect "ref_table" , return name of table use in sql statement ... how exactly?

if want use resuling entities in select statements or joins, should use create function returns table ( .. )

there limitation in hsqldb routines disallows dynamically creating sql. therefore body of create function may include case or if else block switches pre-defined select statement based on input value (1, 2, 3, ..).

the details of create function documented here: http://hsqldb.org/doc/2.0/guide/sqlroutines-chapt.html#n12cc4 there 1 example sql function returns table.


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