Add isMetadata() instead of testing whether dynamic cast fails

androidgcs/src/org/openpilot/uavtalk/UAVDataObject.java

@@ -24,6 +24,7 @@ public abstract class UAVDataObject extends UAVObject {
 	    super.initialize(instID);
 	}
 
+	public boolean isMetadata() { return true; };
 	/**
 	 * Assign a metaobject
 	 */

androidgcs/src/org/openpilot/uavtalk/UAVMetaObject.java

@@ -66,6 +66,11 @@ public class UAVMetaObject extends UAVObject {
 		// Setup metadata of parent
 		parentMetadata = parent.getDefaultMetadata();	
 	}
+	
+	@Override
+	public boolean isMetadata() { 
+		return true; 
+	};
 
 	/**
 	 * Get the parent object

androidgcs/src/org/openpilot/uavtalk/UAVObject.java

@@ -46,6 +46,7 @@ public abstract class UAVObject {
 		}
 	}
 
+	public abstract boolean isMetadata();
 	
 	/**
 	 * Object update mode