使用EclipseLink在Oracle中调用具有复杂对象类型参数的存储过程

Question

Due to the deprecation of JPublisher since Oracle 12c we're currently considering other ways how we can call stored procedures with complex object types as parameters instead of generated classes and JDBC.

It seems that EclipseLink JPA Extensions is the only tool that can help with it. Following the examples I found I'd be able to call procedures with simple types as arguments. But I wasn't able to annotate my entity classes so that they would map correctly to the PL/SQL Object types in the database when the objects are a bit more complex.

For example we have a stored procedure that has one input and one output parameter of the same Object type A. The type structure is following:

Object type A contains <- Table type B which is table of <- Object type C which contains <- Table type D which is table of <- Object type E.

I figured I shall use the @OracleObject for the Object types and @PLSQLTable for the Table types but I haven't found a way how to correctly combine them together.

I've tried the following:

// All annotations with the required elements

@Embeddable
@Struct
@OracleObject
public class A {
    @Column(name = "B")
    private B b;

    // Getter and setter
}

@Embeddable
@Struct
@PLSQLTable (.., nestedType = "C")
public class B { }

@Embeddable
@Struct
@OracleObject
public class C {}

I've tried to add the @PLSQLTable with the proper annotation elements to class A and/or to class C but the Java and DB objects do not map to each other correctly and I'm getting the java.sql.SQLException: Invalid column type during the call.

I'd greatly appreciate if someone could explain to me how to use the annotations to tell the EclipseLink that Object A contains Table B of Object C.

Thank you very much.

Answer 1

Same issue here. I have been going down the path of Spring Data Oracle Extension project. However the example given is a simple pojo, not a complex object.
Despite a lack of examples anywhere I can find, I was able to pull a very complex object back via SqlReturnSqlData(), but can't seem to find a way to insert a complex object into an oracle stored procedure. I have yet to find any full example of how anyone is inserting custom complex Oracle Types. Via Spring or any other way.