AJ-778: fix iotanyvector in table getString display logic;

Author: chengyitian

src/com/xxdb/data/BasicIotAnyVector.java

@@ -58,11 +58,18 @@ protected BasicIotAnyVector(ExtendedDataInput in) throws IOException {
         }
     }
 
-    public Entity get(int index){
+    public Entity get(int index) {
         BasicInt dataType = (BasicInt) indexsDataType.get(index);
         return subVector.get(dataType.getInt());
     }
 
+    public String getString(int index) {
+        BasicInt curDataType = (BasicInt) indexsDataType.get(index);
+        BasicInt curIndex = (BasicInt) indexs.get(index);
+
+        return ((Vector) subVector.get(curDataType.getInt())).get(curIndex.getInt()).getString();
+    }
+
     public Vector getSubVector(int[] indices){
         throw new RuntimeException("BasicIotAnyVector.getSubVector not supported.");
     }