refactor mapping

src/main/java/com/alibaba/druid/mapping/MappingContext.java

@@ -10,6 +10,8 @@ public class MappingContext {
     private boolean      generateAlias          = false;
     private boolean      explainAllColumnToList = false;
 
+    private Entity       defaultEntity;
+
     public MappingContext(){
         this(new ArrayList<Object>());
     }
@@ -42,4 +44,12 @@ public class MappingContext {
         this.explainAllColumnToList = explainAllColumnToList;
     }
 
+    public Entity getDefaultEntity() {
+        return defaultEntity;
+    }
+
+    public void setDefaultEntity(Entity defaultEntity) {
+        this.defaultEntity = defaultEntity;
+    }
+
 }