Implementing method problems

[Donald McLean]

I'm trying to implement an instance of the class org.hibernate.Query, which has two abstract methods "setLong". When I try to implement them, I get a compile error.

Could some kind soul please tell me what the heck is going on and how I might be able to fix it?

Thank you,

Donald

Error:(445, 18) method setLong overrides nothing.
Note: the super classes of class test contain the following, non final members named setLong:
def setLong(x$1: String,x$2: Long): org.hibernate.Query
def setLong(x$1: Int,x$2: Long): org.hibernate.Query
    override def setLong(i: Int, l: Long): org.hibernate.Query = ???
Error:(447, 18) method setLong overrides nothing.
Note: the super classes of class test contain the following, non final members named setLong:
def setLong(x$1: String,x$2: Long): org.hibernate.Query
def setLong(x$1: Int,x$2: Long): org.hibernate.Query
    override def setLong(s: String, l: Long): org.hibernate.Query = ???

abstract class test extends org.hibernate.Query {
  override def setLong(i: Int, l: Long): org.hibernate.Query = ???

  override def setLong(s: String, l: Long): org.hibernate.Query = ???
}

(the above is exactly what I get when I do "implement methods" in the IDE)

[virtualeyes]

Hibernate's written in Java -- it knows nothing about Scala primitives; try:

override def setLong(i: java.lang.Integer, l: java.lang.Long): org.hibernate.Query

[Donald McLean]

Unfortunately, that's not the answer:

Error:(505, 18) method setLong overrides nothing.
Note: the super classes of class MockHQuery contain the following, non final members named setLong:

def setLong(x$1: String,x$2: Long): org.hibernate.Query
def setLong(x$1: Int,x$2: Long): org.hibernate.Query

    override def setLong(s: java.lang.String, l: java.lang.Long): Query = ???

I also tried creating a Java class that implements two separate methods that bridge to non-overloaded function names:

abstract public class BridgeQuery implements Query {
    @Override
    public Query setLong(int i, long l) {
        return setLongByIndex(i, l);
    }

    abstract Query setLongByIndex(int i, long l);

    @Override
    public Query setLong(String s, long l) {
        return setLongByName(s, l);
    }

    abstract Query setLongByName(String s, long l);
}

I've seen this work in cases where the Scala confuses Java types in a way that it's impossible for the Scala compiler to determine which function to override.

--
You received this message because you are subscribed to the Google Groups "scala-user" group.
To unsubscribe from this group and stop receiving emails from it, send an email to scala-user+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

--

Family photographs are a critical legacy for
ourselves and our descendants. Protect that
legacy with a digital backup and recovery plan.

[Alvaro Carrasco]

Seems to work fine for me:

Alvaros-MacBook-Pro:~ alvarocarrasco$ amm

Loading...

Welcome to the Ammonite Repl 0.7.7

(Scala 2.11.8 Java 1.8.0_72)

@ import $ivy.`org.hibernate:hibernate-core:4.3.11.Final`

import $ivy.$

@ abstract class test extends org.hibernate.Query {

    override def setLong(i: Int, l: Long): org.hibernate.Query = ???

    override def setLong(s: String, l: Long): org.hibernate.Query = ???

  }

defined class test

@