diff --git a/src/lib.rs b/src/lib.rs
index ab25a24..b75f0ad 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,7 +9,11 @@ mod tests {
 
 mod xvalue;
 mod metamgr;
+mod timer;
+mod listhead;
 
 pub use xvalue::XValue;
 pub use metamgr::MetaMgr;
 pub use metamgr::ProtoMsg;
+pub use timer::Timer;
+pub use listhead::ListHead;
diff --git a/src/listhead.rs b/src/listhead.rs
new file mode 100644
index 0000000..b565dfd
--- /dev/null
+++ b/src/listhead.rs
@@ -0,0 +1,16 @@
+pub struct ListHead {
+    prev: Option<Box<ListHead>>,
+    next: Option<Box<ListHead>>,
+}
+
+impl ListHead {
+
+    pub fn new() -> Self {
+        let p =  ListHead{
+            prev: None,
+            next: None,
+        };
+        return p;
+    }
+
+}
diff --git a/src/metamgr.rs b/src/metamgr.rs
index f2fb2d3..97155e4 100644
--- a/src/metamgr.rs
+++ b/src/metamgr.rs
@@ -25,14 +25,18 @@ struct MetaClass<T> {
 
 impl<T: Clone + ProtoMsg> MetaClass<T> {
 
-    fn deserialize_json(&mut self, obj: &serde_json::Map<String, serde_json::Value>) {
+    fn deserialize_json(&mut self, idx: i64, obj: &serde_json::Map<String, serde_json::Value>) {
         let msg = Rc::new(self.dummy.clone());
         let id_key = &mut 0;
         let name_key = &mut String::new();
         msg.deserialize(&obj, id_key, name_key);
         self.wrap_list.push(msg.clone());
-        if *id_key != 0 {
-            self.wrap_id_hash.insert(*id_key, msg.clone());
+        if self.prim_key.is_empty() {
+            self.wrap_id_hash.insert(idx, msg.clone());
+        } else {
+            if *id_key != 0 {
+                self.wrap_id_hash.insert(*id_key, msg.clone());
+            }
         }
         if !name_key.is_empty() {
             self.wrap_name_hash.insert(name_key.to_string(), msg.clone());
@@ -41,6 +45,14 @@ impl<T: Clone + ProtoMsg> MetaClass<T> {
 
 }
 
+fn  test1<T>(mgr: &MetaMgr<T>, meta: &MetaClass<T>) {
+
+}
+
+fn  test2<T>(mgr: &MetaMgr<T>) {
+
+}
+
 pub struct MetaMgr<T> {
     meta_classes: Vec<MetaClass::<T>>,
 }
@@ -75,23 +87,28 @@ impl<T: Clone + ProtoMsg> MetaMgr<T> {
         self.meta_classes.push(meta);
     }
 
+    fn test(&self, meta: &mut MetaClass::<T>) {
+    }
+
     pub fn load(&mut self) {
         for i in 0..self.meta_classes.len() {
-            let meta = &mut self.meta_classes[i];
+            let meta = &self.meta_classes[i];
             match File::open(&meta.file_name) {
                 Ok(f) => {
                     match serde_json::from_reader(f) {
                         Ok(data) => {
                             match (data) {
                                 serde_json::Value::Array(arr) =>{
+                                    let mut idx = 0;
                                     for item in arr {
                                         if let serde_json::Value::Object(obj) = item {
-                                            meta.deserialize_json(&obj);
+                                            //meta.deserialize_json(idx, &obj);
+                                            idx = idx + 1;
                                         }
                                     }
                                 },
                                 serde_json::Value::Object(obj) =>{
-                                    meta.deserialize_json(&obj);
+                                    //meta.deserialize_json(0, &obj);
                                 },
                                 _ => {
 
diff --git a/src/timer.rs b/src/timer.rs
new file mode 100644
index 0000000..9e8da6f
--- /dev/null
+++ b/src/timer.rs
@@ -0,0 +1,28 @@
+pub struct Timer {
+
+}
+
+impl Timer {
+
+/*    pub fn init(&mut self,
+                get_tick_count: fn () -> i64,
+                get_fxied_timer_expires: fn (i32, i64) -> i64,
+                context: (),
+                gctime: i32,
+                cache_timer_num: i32) {
+
+    }*/
+
+    pub fn uninit(&mut self) {
+
+    }
+
+    fn clear(&mut self) {
+
+    }
+
+    pub fn update(&mut self) {
+
+    }
+
+}