SquerylSQLException#getCause is covariant

tych0 · tych0 · commit 0c42a851fb2d · 2012-11-27T15:26:26.000-06:00
At least in 2.9.1 (and probably others), without the annotation all you get
back is a Throwable.
diff --git a/src/main/scala/org/squeryl/KeyedEntity.scala b/src/main/scala/org/squeryl/KeyedEntity.scala
@@ -122,7 +122,7 @@ object SquerylSQLException {
 
 class SquerylSQLException(message: String, cause: Option[SQLException]) extends RuntimeException(message, cause.orNull) {
   // Overridden to provide covariant return type as a convenience
-  override def getCause = cause.orNull
+  override def getCause: SQLException = cause.orNull
 }
 
 class StaleUpdateException(message: String) extends RuntimeException(message)

Original file line number	Diff line number	Diff line change
`@@ -122,7 +122,7 @@ object SquerylSQLException {`
`122`	`122`
`123`	`123`	`class SquerylSQLException(message: String, cause: Option[SQLException]) extends RuntimeException(message, cause.orNull) {`
`124`	`124`	`// Overridden to provide covariant return type as a convenience`
`125`		`- override def getCause = cause.orNull`
	`125`	`+ override def getCause: SQLException = cause.orNull`
`126`	`126`	`}`
`127`	`127`
`128`	`128`	`class StaleUpdateException(message: String) extends RuntimeException(message)`