allow overriding create[List] methods

Author: scotthernandez

src/main/com/mongodb/util/JSONCallback.java

@@ -4,25 +4,25 @@
 
 import java.text.*;
 import java.util.*;
-import java.util.logging.*;
 import java.util.regex.*;
 
 import org.bson.*;
 import org.bson.types.*;
+
 import com.mongodb.*;
 
 public class JSONCallback extends BasicBSONCallback {
 
+    @Override
     public BSONObject create(){
         return new BasicDBObject();
     }
 
-    public BSONObject create( boolean array , List<String> path ){
-        if ( array )
-            return new BasicDBList();
-        return new BasicDBObject();
+    @Override
+    protected BSONObject createList() {
+        return new BasicDBList();
     }
-
+    
     public void objectStart(boolean array, String name){
         _lastArray = array;
         super.objectStart( array , name );

src/main/org/bson/BasicBSONCallback.java

@@ -3,7 +3,7 @@
 package org.bson;
 
 import java.util.*;
-import java.util.regex.*;
+import java.util.regex.Pattern;
 
 import org.bson.types.*;
 
@@ -17,14 +17,18 @@ public BSONObject create(){
         return new BasicBSONObject();
     }
 
+    protected BSONObject createList() {
+        return new BasicBSONList();
+    }
+
     public BSONCallback createBSONCallback(){
         return new BasicBSONCallback();
     }
 
     public BSONObject create( boolean array , List<String> path ){
         if ( array )
-            return new BasicBSONList();
-        return new BasicBSONObject();
+            return createList();
+        return create();
     }
 
     public void objectStart(){