Enables script access to the per object dynamic attributes through the JsonStore

script functions. Adds JsonAttachObjectStore to associate a store identifier with
an object (scripts can only access the store in their host object, this could be
extended but isn't necessary for now).

Note this opens a method to the DAMap OSDMap. This will be removed later, but
greatly simplifies the code for now.

The JsonStore and these scripts are disabled by default.

3 files changed, 95 insertions, 13 deletions

diff --git a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStore.cs b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStore.cs
index 0b7b31b..751e463 100644
--- a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStore.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStore.cs
@@ -49,7 +49,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
         private static readonly ILog m_log =
             LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
-        private OSD m_ValueStore;
+        protected virtual OSD ValueStore { get; set; }
 
         protected class TakeValueCallbackClass
         {
@@ -108,17 +108,18 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
         /// 
         /// </summary>
         // -----------------------------------------------------------------
-        public JsonStore() : this("") {}
-        
-        public JsonStore(string value)
+        public JsonStore() 
         {
             m_TakeStore = new List<TakeValueCallbackClass>();
             m_ReadStore = new List<TakeValueCallbackClass>();
-           
+        }
+        
+        public JsonStore(string value)
+        {
             if (String.IsNullOrEmpty(value))
-                m_ValueStore = new OSDMap();
+                ValueStore = new OSDMap();
             else
-                m_ValueStore = OSDParser.DeserializeJson(value);
+                ValueStore = OSDParser.DeserializeJson(value);
         }
 
         // -----------------------------------------------------------------
@@ -129,7 +130,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
         public bool TestPath(string expr, bool useJson)
         {
             Stack<string> path = ParsePathExpression(expr);
-            OSD result = ProcessPathExpression(m_ValueStore,path);
+            OSD result = ProcessPathExpression(ValueStore,path);
 
             if (result == null)
                 return false;
@@ -148,7 +149,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
         public bool GetValue(string expr, out string value, bool useJson)
         {
             Stack<string> path = ParsePathExpression(expr);
-            OSD result = ProcessPathExpression(m_ValueStore,path);
+            OSD result = ProcessPathExpression(ValueStore,path);
             return ConvertOutputValue(result,out value,useJson); 
         }
      
@@ -184,7 +185,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
             Stack<string> path = ParsePathExpression(expr);
             string pexpr = PathExpressionToKey(path);
 
-            OSD result = ProcessPathExpression(m_ValueStore,path);
+            OSD result = ProcessPathExpression(ValueStore,path);
             if (result == null)
             {
                 m_TakeStore.Add(new TakeValueCallbackClass(pexpr,useJson,cback));
@@ -215,7 +216,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
             Stack<string> path = ParsePathExpression(expr);
             string pexpr = PathExpressionToKey(path);
 
-            OSD result = ProcessPathExpression(m_ValueStore,path);
+            OSD result = ProcessPathExpression(ValueStore,path);
             if (result == null)
             {
                 m_ReadStore.Add(new TakeValueCallbackClass(pexpr,useJson,cback));
@@ -245,7 +246,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
             Stack<string> path = ParsePathExpression(expr);
             if (path.Count == 0)
             {
-                m_ValueStore = ovalue;
+                ValueStore = ovalue;
                 return true;
             }
 
@@ -254,7 +255,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
             if (pexpr != "")
                 pexpr += ".";
 
-            OSD result = ProcessPathExpression(m_ValueStore,path);
+            OSD result = ProcessPathExpression(ValueStore,path);
             if (result == null)
                 return false;
 
@@ -522,4 +523,41 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
             return pkey;
         }
     }
+
+    public class JsonObjectStore : JsonStore
+    {
+        private static readonly ILog m_log =
+            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private Scene m_scene;
+        private UUID m_objectID;
+
+        protected override OSD ValueStore 
+        {
+            get
+            {
+                SceneObjectPart sop = m_scene.GetSceneObjectPart(m_objectID);
+                if (sop == null)
+                {
+                    // This is bad
+                    return null;
+                }
+                
+                return sop.DynAttrs.TopLevelMap;
+            }
+
+            // cannot set the top level
+            set
+            {
+                m_log.InfoFormat("[JsonStore] cannot set top level value in object store");
+            }
+        }
+
+        public JsonObjectStore(Scene scene, UUID oid) : base()
+        {
+            m_scene = scene;
+            m_objectID = oid;
+        }
+    }
+    
 }
diff --git a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs
index b9b3ebc..a36ef42 100644
--- a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreModule.cs
@@ -175,6 +175,34 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
         /// 
         /// </summary>
         // -----------------------------------------------------------------
+        public bool AttachObjectStore(UUID objectID)
+        {
+            if (! m_enabled) return false;
+
+            SceneObjectPart sop = m_scene.GetSceneObjectPart(objectID);
+            if (sop == null)
+            {
+                m_log.InfoFormat("[JsonStore] unable to attach to unknown object; {0}",objectID);
+                return false;
+            }
+
+            lock (m_JsonValueStore)
+            {
+                if (m_JsonValueStore.ContainsKey(objectID))
+                    return true;
+                
+                JsonStore map = new JsonObjectStore(m_scene,objectID);
+                m_JsonValueStore.Add(objectID,map);
+            }
+            
+            return true;
+        }
+        
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
         public bool CreateStore(string value, ref UUID result)
         {
             if (result == UUID.Zero)
diff --git a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreScriptModule.cs b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreScriptModule.cs
index ec880a7..48b4a9f 100644
--- a/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreScriptModule.cs
+++ b/OpenSim/Region/OptionalModules/Scripting/JsonStore/JsonStoreScriptModule.cs
@@ -169,6 +169,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
                     m_comms.RegisterScriptInvocations(this);
 
                     // m_comms.RegisterScriptInvocation(this, "JsonCreateStore");
+                    // m_comms.RegisterScriptInvocation(this, "JsonAttachObjectStore");
                     // m_comms.RegisterScriptInvocation(this, "JsonDestroyStore");
                     // m_comms.RegisterScriptInvocation(this, "JsonTestStore");
 
@@ -220,6 +221,21 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore
         /// </summary>
         // -----------------------------------------------------------------
         [ScriptInvocation]
+        public UUID JsonAttachObjectStore(UUID hostID, UUID scriptID)
+        {
+            UUID uuid = UUID.Zero;
+            if (! m_store.AttachObjectStore(hostID))
+                GenerateRuntimeError("Failed to create Json store");
+            
+            return hostID;
+        }
+
+        // -----------------------------------------------------------------
+        /// <summary>
+        /// 
+        /// </summary>
+        // -----------------------------------------------------------------
+        [ScriptInvocation]
         public UUID JsonCreateStore(UUID hostID, UUID scriptID, string value)
         {
             UUID uuid = UUID.Zero;