Add method to validate metadata document

ServiceSamples/ODataConsoleApplication/MetadataDocumentValidator.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml;
+
+namespace ODataConsoleApplication
+{
+    /// <summary>
+    /// Validates metadata document and shows warning messages for entity/enum name collisions.
+    /// </summary>
+    class MetadataDocumentValidator
+    {
+        /// <param name="args"></param>
+        static void ValidateMetadataDocument(string[] args)
+        {
+            string filename = @"C:\Users\xyz\Documents\metadata.xml";  // change this path as needed
+
+            XmlReader r = XmlReader.Create(File.Open(filename, FileMode.Open, FileAccess.Read));
+
+            XmlDocument md = new XmlDocument();
+            md.Load(r);
+
+            var DefinedNames = new Dictionary<string, string>(StringComparer.InvariantCultureIgnoreCase);
+
+            var DataServicesEdm = md.ChildNodes[1].ChildNodes[0];
+            if (DataServicesEdm.Name.CompareTo("edmx:DataServices") != 0)
+                throw new FormatException("Did not get the expected format.");
+
+            var Schema = DataServicesEdm.ChildNodes[0];
+            if (Schema.Name.CompareTo("Schema") != 0)
+                throw new FormatException("Did not get the expected format.");
+
+            foreach (var node in Schema)
+            {
+                var n = node as XmlNode;
+
+                var nameAttribute = n.Attributes["Name"];
+                if (nameAttribute != null)
+                {
+                    if (n.Name == "Action")
+                        break;
+
+                    if (DefinedNames.Keys.Contains(nameAttribute.Value))
+                    {
+                        Console.WriteLine($"Warning for {n.Name} \"{nameAttribute.Value}\" : {DefinedNames[nameAttribute.Value]} of name \"{nameAttribute.Value}\" is already defined.");
+                    }
+                    else
+                    {
+                        DefinedNames.Add(nameAttribute.Value, n.Name);
+                    }
+                }
+            }
+
+            Console.ReadLine();
+        }
+    }
+}

ServiceSamples/ODataConsoleApplication/ODataConsoleApplication.csproj

@@ -72,6 +72,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="MetadataDocumentValidator.cs" />
     <Compile Include="ODataChangesetsExample.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />