Stubbing out query execution settings

Adding a setting for batch separator.
Very small refactor to WorkspaceService that will create the basic
settings upon construction of the object.

src/Microsoft.SqlTools.ServiceLayer/QueryExecution/QueryExecutionService.cs

@@ -10,6 +10,8 @@ using Microsoft.SqlTools.ServiceLayer.Connection;
 using Microsoft.SqlTools.ServiceLayer.Hosting;
 using Microsoft.SqlTools.ServiceLayer.Hosting.Protocol;
 using Microsoft.SqlTools.ServiceLayer.QueryExecution.Contracts;
+using Microsoft.SqlTools.ServiceLayer.SqlContext;
+using Microsoft.SqlTools.ServiceLayer.Workspace;
 
 namespace Microsoft.SqlTools.ServiceLayer.QueryExecution
 {
@@ -60,6 +62,8 @@ namespace Microsoft.SqlTools.ServiceLayer.QueryExecution
         private readonly Lazy<ConcurrentDictionary<string, Query>> queries =
             new Lazy<ConcurrentDictionary<string, Query>>(() => new ConcurrentDictionary<string, Query>());
 
+        private SqlToolsSettings Settings { get { return WorkspaceService<SqlToolsSettings>.Instance.CurrentSettings; } }
+
         #endregion
 
         /// <summary>
@@ -81,6 +85,13 @@ namespace Microsoft.SqlTools.ServiceLayer.QueryExecution
                 Dispose();
                 return Task.FromResult(0);
             });
+
+            // Register a handler for when the configuration changes
+            WorkspaceService<SqlToolsSettings>.Instance.RegisterConfigChangeCallback((oldSettings, newSettings, eventContext) =>
+            {
+                Settings.QueryExecutionSettings.Update(newSettings.QueryExecutionSettings);
+                return Task.FromResult(0);
+            });
         }
 
         #region Request Handlers
@@ -281,8 +292,11 @@ namespace Microsoft.SqlTools.ServiceLayer.QueryExecution
                 return;
             }
 
+            // Retrieve the current settings for executing the query with
+            QueryExecutionSettings settings = WorkspaceService<SqlToolsSettings>.Instance.CurrentSettings.QueryExecutionSettings;
+
             // Launch the query and respond with successfully launching it
-            Task executeTask = query.Execute();
+            Task executeTask = query.Execute(/*settings*/);
             await requestContext.SendResult(new QueryExecuteResult
             {
                 Messages = null

src/Microsoft.SqlTools.ServiceLayer/SqlContext/QueryExecutionSettings.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Microsoft.SqlTools.ServiceLayer.SqlContext
+{
+    public class QueryExecutionSettings
+    {
+        private const string DefaultBatchSeparator = "GO";
+
+        private string batchSeparator;
+
+        public string BatchSeparator
+        {
+            get { return batchSeparator ?? DefaultBatchSeparator; }
+            set { batchSeparator = value; }
+        }
+
+        /// <summary>
+        /// Update the current settings with the new settings
+        /// </summary>
+        /// <param name="newSettings">The new settings</param>
+        public void Update(QueryExecutionSettings newSettings)
+        {
+            BatchSeparator = newSettings.BatchSeparator;
+        }
+    }
+}

src/Microsoft.SqlTools.ServiceLayer/SqlContext/SqlToolsSettings.cs

@@ -31,6 +31,8 @@ namespace Microsoft.SqlTools.ServiceLayer.SqlContext
                 this.ScriptAnalysis.Update(settings.ScriptAnalysis, workspaceRootPath);
             }
         }
+
+        public QueryExecutionSettings QueryExecutionSettings { get; set; }
     }
 
     /// <summary>

src/Microsoft.SqlTools.ServiceLayer/Workspace/WorkspaceService.cs

@@ -44,6 +44,8 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace
             ConfigChangeCallbacks = new List<ConfigChangeCallback>();
             TextDocChangeCallbacks = new List<TextDocChangeCallback>();
             TextDocOpenCallbacks = new List<TextDocOpenCallback>();
+
+            CurrentSettings = new TConfig();
         }
 
         #endregion
@@ -101,7 +103,6 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace
         {
             // Create a workspace that will handle state for the session
             Workspace = new Workspace();
-            CurrentSettings = new TConfig();
 
             // Register the handlers for when changes to the workspae occur
             serviceHost.SetEventHandler(DidChangeTextDocumentNotification.Type, HandleDidChangeTextDocumentNotification);