How to call a custom Oracle function returning a value from JPA

Question

I have a custom function in oracle returning a number after deleting records. I could get a value in sql_plus such as

call my_function(4) into :out_number;
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Answer 1

If you are using EclipseLink you can use a StoredFunctionCall object to call a stored function such as this.

You could also define it as a named query using the @NamedStoredFunctionQuery.