altoslib: Clean up AltosRecord clone methods

Make the AltosRecord version abstract and then implement suitable
versions in each subclass by creating copying constructors for each
class.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/altoslib/AltosRecordMM.java b/altoslib/AltosRecordMM.java
index 9f529234..546f3055 100644
--- a/altoslib/AltosRecordMM.java
+++ b/altoslib/AltosRecordMM.java
@@ -131,10 +131,10 @@ public class AltosRecordMM extends AltosRecord {
 		mag = old.mag;
 	}
 
+
+
 	public AltosRecordMM clone() {
-		AltosRecordMM n = (AltosRecordMM) super.clone();
-		n.copy(this);
-		return n;
+		return new AltosRecordMM(this);
 	}
 
 	void make_missing() {
@@ -167,6 +167,10 @@ public class AltosRecordMM extends AltosRecord {
 		make_missing();
 	}
 
+	public AltosRecordMM(AltosRecordMM old) {
+		copy(old);
+	}
+
 	public AltosRecordMM() {
 		super();
 		make_missing();