Saving snapshots

Shogi.Database/Session/Stored Procedures/CreateState.sql

@@ -0,0 +1,6 @@
+CREATE PROCEDURE [session].[CreateState]
+	@SessionId [session].[SessionSurrogateKey],
+	@Document NVARCHAR(MAX)
+AS
+
+INSERT INTO [session].[State] (SessionId, Document) VALUES (@SessionId, @Document);

Shogi.Database/Session/Stored Procedures/ReadStatesBySession.sql

@@ -0,0 +1,7 @@
+CREATE PROCEDURE [session].[ReadStatesBySession]
+	@SessionId [session].[SessionSurrogateKey]
+AS
+
+SELECT Id, SessionId, Document
+FROM [session].[State]
+WHERE Id = @SessionId;

Shogi.Database/Session/Tables/State.sql

@@ -0,0 +1,9 @@
+CREATE TABLE [session].[State]
+(
+	[Id] BIGINT NOT NULL PRIMARY KEY IDENTITY, 
+  [SessionId] [session].[SessionSurrogateKey] NOT NULL, 
+  [Document] NVARCHAR(MAX) NOT NULL,
+    
+  CONSTRAINT [FK_State_ToSession] FOREIGN KEY (SessionId) REFERENCES [session].[Session](Id),
+  CONSTRAINT [StateDocument must be JSON] CHECK(ISJSON(Document)=1)
+)

Shogi.Database/Session/Types/SessionSurrogateKey.sql

@@ -1,2 +1,3 @@
-CREATE TYPE [session].[SessionSurrogateKey]
+-- C# Guid
+CREATE TYPE [session].[SessionSurrogateKey]
 	FROM CHAR(36) NOT NULL