Reverting index name validation

Closes #1017

Author: gmarz

src/Nest/DSL/CreateIndexDescriptor.cs

@@ -17,30 +17,10 @@ public interface ICreateIndexRequest : IIndexPath<CreateIndexRequestParameters>
 
 	internal static class CreateIndexPathInfo
 	{
-		private static char[] _invalidChars = new[] { '\\', '/', '*', '?', '"', '<', '>', '|', ' ', ',', '#' };
-		private static string _invalidCharsMessage = string.Join(", ", _invalidChars);
-
 		public static void Update(ElasticsearchPathInfo<CreateIndexRequestParameters> pathInfo, ICreateIndexRequest request)
 		{
 			pathInfo.HttpMethod = PathInfoHttpMethod.POST;
 		}
-
-		public static void Validate(ElasticsearchPathInfo<CreateIndexRequestParameters> pathInfo, ICreateIndexRequest request)
-		{
-			var index = pathInfo.Index;
-			if (index.StartsWith("_"))
-				throw new DslException("indexname {0} may not start with an underscore".F(index));
-
-			if (Encoding.UTF8.GetByteCount(index) > 255)
-				throw new DslException("indexname {0} exceeds maximum index name length of 255".F(index));
-
-			if (index.Any(char.IsUpper))
-				throw new DslException("indexname {0} contains uppercase characters".F(index));
-
-			if (index.Any(c => _invalidChars.Contains(c)))
-				throw new DslException("indexname {0} contains one of {1} invalid characters".F(index, _invalidCharsMessage));
-
-		}
 	}
 
 	public partial class CreateIndexRequest : IndexPathBase<CreateIndexRequestParameters>, ICreateIndexRequest
@@ -53,11 +33,6 @@ protected override void UpdatePathInfo(IConnectionSettingsValues settings, Elast
 		{
 			CreateIndexPathInfo.Update(pathInfo, this);
 		}
-
-		protected override void ValidatePathInfo(ElasticsearchPathInfo<CreateIndexRequestParameters> pathInfo)
-		{
-			CreateIndexPathInfo.Validate(pathInfo, this);
-		}
 	}
 
 	[DescriptorFor("IndicesCreate")]
@@ -259,11 +234,5 @@ protected override void UpdatePathInfo(IConnectionSettingsValues settings, Elast
 		{
 			CreateIndexPathInfo.Update(pathInfo, this);
 		}
-
-		protected override void ValidatePathInfo(ElasticsearchPathInfo<CreateIndexRequestParameters> pathInfo)
-		{
-			CreateIndexPathInfo.Validate(pathInfo, this);
-		}
-
 	}
 }

src/Nest/Extensions/Extensions.cs

@@ -75,13 +75,6 @@ internal static void ThrowIfEmpty<T>(this IEnumerable<T> @object, string paramet
 				throw new ArgumentException("Argument can not be an empty collection", parameterName);
 		}
 
-	    internal static void ThrownIfNotLowercase(this string @object, string parameterName)
-	    {
-            @object.ThrowIfNull(parameterName);
-	        if (@object.Any(char.IsUpper))
-                throw new ArgumentException("Argument can not have uppercase letter", parameterName);
-        }
-
         internal static IList<T> EagerConcat<T>(this IEnumerable<T> list, IEnumerable<T> other)
 		{
 			list = list.HasAny() ? list : Enumerable.Empty<T>();

src/Tests/Nest.Tests.Unit/Internals/Inferno/IndexNameResolverTests.cs

@@ -243,7 +243,6 @@
     <Compile Include="Internals\Inferno\EscapedFormatTests.cs" />
     <Compile Include="Internals\Inferno\HostNameWithPathTests.cs" />
     <Compile Include="Internals\Inferno\MapTypeNamesTests.cs" />
-    <Compile Include="Internals\Inferno\IndexNameResolverTests.cs" />
     <Compile Include="Internals\Inferno\MapPropertyNamesForTests.cs" />
     <Compile Include="Internals\Serialize\ConnectionSettingsTests.cs" />
     <Compile Include="Internals\Serialize\NullValueHandlingTests.cs" />