Issue chucknorris#120 (Pass version via command line argument)

 - Add CommandLineVersionResolver.cs which extracts version directly from a string.
 - Update VersionResolverBuilder.cs to include the new resolver. Logic now groups the file based resolvers together and skips them if the command line resolver is valid.
 - Added Version property to the configuration objects.
 - Fix small typo / spelling error (already submitted in Pull Request chucknorris#134

product/roundhouse.tasks/Roundhouse.cs

@@ -53,6 +53,8 @@ bool ITask.Execute()
 
         public string RepositoryPath { get; set; }
 
+        public string Version { get; set; }
+
         public string VersionFile { get; set; }
 
         public string VersionXPath { get; set; }

product/roundhouse/consoles/DefaultConfiguration.cs

@@ -16,6 +16,7 @@ public sealed class DefaultConfiguration : ConfigurationPropertyHolder
         public int CommandTimeoutAdmin { get; set; }
         public string SqlFilesDirectory { get; set; }
         public string RepositoryPath { get; set; }
+        public string Version { get; set; } 
         public string VersionFile { get; set; }
         public string VersionXPath { get; set; }
         public string AlterDatabaseFolderName { get; set; }

product/roundhouse/infrastructure.app/builders/VersionResolverBuilder.cs

@@ -8,14 +8,23 @@ public class VersionResolverBuilder
     {
         public static VersionResolver build(FileSystemAccess file_system, ConfigurationPropertyHolder configuration_property_holder)
         {
-            VersionResolver xml_version_finder = new XmlFileVersionResolver(file_system, configuration_property_holder.VersionXPath, configuration_property_holder.VersionFile);
-            VersionResolver dll_version_finder = new DllFileVersionResolver(file_system, configuration_property_holder.VersionFile);
-            VersionResolver text_version_finder = new TextVersionResolver(file_system, configuration_property_holder.VersionFile);
-            VersionResolver script_number_version_finder = new ScriptfileVersionResolver(file_system, configuration_property_holder);
+            VersionResolver commandLine_version_finder = new CommandLineVersionResolver(configuration_property_holder.Version);
 
-            IEnumerable<VersionResolver> resolvers = new List<VersionResolver> { xml_version_finder, dll_version_finder, text_version_finder, script_number_version_finder };
+            if (commandLine_version_finder.meets_criteria())
+            {
+                return commandLine_version_finder;
+            }
+            else
+            {
+                VersionResolver xml_version_finder = new XmlFileVersionResolver(file_system, configuration_property_holder.VersionXPath, configuration_property_holder.VersionFile);
+                VersionResolver dll_version_finder = new DllFileVersionResolver(file_system, configuration_property_holder.VersionFile);
+                VersionResolver text_version_finder = new TextVersionResolver(file_system, configuration_property_holder.VersionFile);
+                VersionResolver script_number_version_finder = new ScriptfileVersionResolver(file_system, configuration_property_holder);
 
-            return new ComplexVersionResolver(resolvers);
+                IEnumerable<VersionResolver> resolvers = new List<VersionResolver> { xml_version_finder, dll_version_finder, text_version_finder, script_number_version_finder };
+
+                return new ComplexVersionResolver(resolvers);
+            }
         }
     }
 }

product/roundhouse/resolvers/CommandLineVersionResolver.cs

@@ -0,0 +1,30 @@
+using roundhouse.infrastructure.logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace roundhouse.resolvers
+{
+    public sealed class CommandLineVersionResolver : VersionResolver
+    {
+        private readonly string _version;
+
+        public CommandLineVersionResolver(string version)
+        {
+            _version = version;
+        }
+        public bool meets_criteria()
+        {
+            return !string.IsNullOrEmpty(_version);
+        }
+
+        public string resolve_version()
+        {
+            Log.bound_to(this).log_an_info_event_containing(
+                " Found version {0} from command line argument.", _version);
+
+            return _version;
+        }
+    }
+}

product/roundhouse/roundhouse.csproj

@@ -130,6 +130,7 @@
     <Compile Include="parameters\AdoNetParameter.cs" />
     <Compile Include="parameters\IParameter.cs" />
     <Compile Include="Migrate.cs" />
+    <Compile Include="resolvers\CommandLineVersionResolver.cs" />
     <Compile Include="resolvers\ScriptfileVersionResolver.cs" />
     <Compile Include="resolvers\TextVersionResolver.cs" />
     <Compile Include="RoundhousEFluentNHibernateDiffingType.cs" />

product/roundhouse/runners/RoundhouseMigrationRunner.cs

@@ -76,7 +76,7 @@ public void run()
 
             if (run_in_a_transaction && !database_migrator.database.supports_ddl_transactions)
             {
-                Log.bound_to(this).log_a_warning_event_containing("You asked to run in a transaction, but this dabasetype doesn't support DDL transactions.");
+                Log.bound_to(this).log_a_warning_event_containing("You asked to run in a transaction, but this databasetype doesn't support DDL transactions.");
                 if (!silent)
                 {
                     Log.bound_to(this).log_an_info_event_containing("Please press enter to continue without transaction support...");