Given a class like this

class Foo(val f1: Int, val f2: Int) extends KeyedEntity[CompositeKey2[Int, Int]] {
  val id = compositeKey(f1, f2)
}

Attempting to execute the following code will result in an ArrayIndexOutOfBoundsException

foos.lookup(compositeKey(1, 1))

Here is the tail end of a typical stack trace.

org.specs.runner.UserError: java.lang.IndexOutOfBoundsException: 1
	at scala.collection.mutable.ResizableArray$class.apply(ResizableArray.scala:45)
	at scala.collection.mutable.ArrayBuffer.apply(ArrayBuffer.scala:43)
	at scala.collection.mutable.ArrayBuffer.remove(ArrayBuffer.scala:158)
	at org.squeryl.dsl.CompositeKey$class.buildEquality(CompositeKey.scala:56)
	at org.squeryl.dsl.CompositeKey2.buildEquality(CompositeKey.scala:66)
	at org.squeryl.internals.FieldReferenceLinker$.createEqualityExpressionWithLastAccessedFieldReferenceAndConstant(FieldReferenceLinker.scala:168)