Changeset 3577 for trunk/sources/HeuristicLab.Persistence/3.3/Default

Timestamp:

05/01/10 12:37:16 (15 years ago)

Author:

epitzer

Message:

throw Exception if class is marked [Storable] but cannot be serialized with the StorableSerializer (#548)

Location:

trunk/sources/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/Storable

Files:

• StorableReflection.cs (modified) (1 diff)
• StorableSerializer.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/Storable/StorableReflection.cs

@@ -144 +144 @@
 
     private static StorableClassAttribute GetStorableClassAttribute(Type type) {
-      return (StorableClassAttribute)type
-        .GetCustomAttributes(typeof(StorableClassAttribute), false)
-        .SingleOrDefault();
+      lock (storableClassCache) {
+        if (storableClassCache.ContainsKey(type))
+          return storableClassCache[type];
+        StorableClassAttribute attribute = type
+          .GetCustomAttributes(typeof(StorableClassAttribute), false)
+          .SingleOrDefault() as StorableClassAttribute;
+        storableClassCache.Add(type, attribute);
+        return attribute;
+      }
     }
 
-    private static bool HasStorableClassAttribute(Type type) {
-      return type.GetCustomAttributes(typeof(StorableClassAttribute), false).Length > 0;
+    public static bool HasStorableClassAttribute(Type type) {
+      return GetStorableClassAttribute(type) != null;
     }
+
+    private static Dictionary<Type, StorableClassAttribute> storableClassCache = 
+      new Dictionary<Type, StorableClassAttribute>();
 
     #endregion

trunk/sources/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/Storable/StorableSerializer.cs

@@ -39 +39 @@
     /// </returns>
     public bool CanSerialize(Type type) {
+      bool markedStorable = StorableReflection.HasStorableClassAttribute(type);
       if (GetConstructor(type) == null)
-        return false;
-      return StorableReflection.IsEmptyOrStorableType(type, true);
+        if (markedStorable)
+          throw new Exception("[Storable] type has no default constructor and no [StorableConstructor]");
+        else
+          return false;
+      if (!StorableReflection.IsEmptyOrStorableType(type, true))
+        if (markedStorable)
+          throw new Exception("[Storable] type has non emtpy, non [Storable] base classes");
+        else
+          return false;
+      return true;
     }
 
@@ -53 +62 @@
     /// </returns>
     public string JustifyRejection(Type type) {
+      StringBuilder sb = new StringBuilder();
       if (GetConstructor(type) == null)
-        return "no default constructor and no storable constructor";
+        sb.Append("class has no default constructor and no [StorableConstructor]");
       if (!StorableReflection.IsEmptyOrStorableType(type, true))
-        return "class is not marked with the storable class attribute";
-      return "no reason";
+        sb.Append("class (or one of its bases) is not empty and not marked [Storable]; ");      
+      return sb.ToString();
     }
 
@@ -154 +164 @@
 
     private Dictionary<HookDesignator, List<StorableReflection.Hook>> hookCache =
-      new Dictionary<HookDesignator, List<StorableReflection.Hook>>();
+      new Dictionary<HookDesignator, List<StorableReflection.Hook>>();    
 
     #endregion