Add EdmBuilder.cs and its Breeze.EdmBuilder nuget package

Breeze.Client/Scripts/Labs/EdmBuilder.cs

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+using System.Data.Entity;
+using System.IO;
+using System.Xml;
+using Microsoft.Data.Edm.Csdl;
+
+namespace Microsoft.Data.Edm
+{
+    /// <summary>
+    /// DbContext extension that builds an "Entity Data Model" (EDM) from a <see cref="DbContext"/>
+    /// </summary>
+    /// <remarks>
+    /// We need the EDM both to define the Web API OData route and as a
+    /// source of metadata for the Breeze client. 
+    /// The Web API OData literature recommends the
+    /// <see cref="System.Web.Http.OData.Builder.ODataConventionModelBuilder"/>.
+    /// That component is suffient for route definition but fails as a source of 
+    /// metadata for Breeze because (as of this writing) it neglects to include the
+    /// foreign key definitions Breeze requires to maintain navigation properties
+    /// of client-side JavaScript entities.
+    /// <p>This EDM Builder ask the EF DbContext to supply the metadata which 
+    /// satisfy both route definition and Breeze.</p>
+    /// </remarks>
+    public static class EdmBuilder
+    {
+        /// <summary>
+        /// Builds an "Entity Data Model" (EDM) from a <see cref="DbContext"/>
+        /// </summary>
+        /// <example>
+        /// /* In the WebApiConfig.cs */
+        /// using (var context = new TodoListContext())
+        /// {
+        ///   config.Routes.MapODataRoute(
+        ///       routeName: "odata", 
+        ///       routePrefix: "odata", 
+        ///       model: context.GetEdm(), 
+        ///       batchHandler: new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer)
+        ///       );
+        /// }
+        /// </example>
+        /// <param name="dbContext">The source <see cref="DbContext"/></param>
+        /// <returns>An XML <see cref="IEdmModel"/> </returns>
+        public static IEdmModel GetEdm(this DbContext dbContext)
+        {
+            using (var stream = new MemoryStream())
+            {
+                using (var writer = XmlWriter.Create(stream))
+                {
+                    System.Data.Entity.Infrastructure.EdmxWriter.WriteEdmx(dbContext, writer);
+                }
+                stream.Position = 0;
+                using (var reader = XmlReader.Create(stream))
+                {
+                    return EdmxReader.Parse(reader);
+                }
+            }
+        }
+    }
+}

Nuget.builds/Breeze.EdmBuilder/Breeze.EdmBuilder.nuspec

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+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
+    <metadata>
+        <id>Breeze.EdmBuilder</id>
+        <version>1.0.0</version>
+        <title>Breeze Labs: EdmBuilder</title>
+        <authors>Ward Bell</authors>
+        <owners>Ward Bell</owners>
+        <licenseUrl>http://www.opensource.org/licenses/mit-license.php</licenseUrl>
+        <projectUrl>http://www.breezejs.com/breeze-labs/breezeedmbuilder</projectUrl>
+        <iconUrl>http://www.breezejs.com/sites/all/images/breezeb.png</iconUrl>
+        <requireLicenseAcceptance>false</requireLicenseAcceptance>
+        <description>Generates an "Entity Data Model" (EDM) from an Entity Framework DbContext. This EDM can produce the metadata Breeze needs to manage a corresponding JavaScript entity model on the client including the foreign key properties necessary to maintaining associations. This builder replaces the ODataConventionModelBuilder in a Web API OData application. See the comments in the code for an explanation and usage. See it in action in
+		the "Breeze Web API OData Sample".</description>
+        <summary>Generates an "Entity Data Model" (EDM) from an Entity Framework DbContext.</summary>
+        <copyright>Copyright © 2014 IdeaBlade</copyright>
+        <language>en-US</language>
+        <tags>breeze webapi odata</tags>
+    </metadata>
+</package>

Nuget.builds/Breeze.EdmBuilder/Default.nuspec

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
+    <metadata>
+        <id>Breeze.EdmBuilder</id>
+        <version>1.0.0</version>
+        <title>Breeze Labs: EdmBuilder</title>
+        <authors>Ward Bell</authors>
+        <owners>Ward Bell</owners>
+        <licenseUrl>http://www.opensource.org/licenses/mit-license.php</licenseUrl>
+        <projectUrl>http://www.breezejs.com/breeze-labs/breezeedmbuilder</projectUrl>
+        <iconUrl>http://www.breezejs.com/sites/all/images/breezeb.png</iconUrl>
+        <requireLicenseAcceptance>false</requireLicenseAcceptance>
+        <description>Generates an "Entity Data Model" (EDM) from an Entity Framework DbContext. This EDM can produce the metadata Breeze needs to manage a corresponding JavaScript entity model on the client including the foreign key properties necessary to maintaining associations. This builder replaces the ODataConventionModelBuilder in a Web API OData application. See the comments in the code for an explanation and usage. See it in action in
+		the "Breeze Web API OData Sample".</description>
+        <summary>Generates an "Entity Data Model" (EDM) from an Entity Framework DbContext.</summary>
+        <copyright>Copyright © 2014 IdeaBlade</copyright>
+        <language>en-US</language>
+        <tags>breeze webapi odata</tags>
+    </metadata>
+</package>

Nuget.builds/Breeze.EdmBuilder/content/App_Data/EdmBuilder.cs

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+using System.Data.Entity;
+using System.IO;
+using System.Xml;
+using Microsoft.Data.Edm.Csdl;
+
+namespace Microsoft.Data.Edm
+{
+    /// <summary>
+    /// DbContext extension that builds an "Entity Data Model" (EDM) from a <see cref="DbContext"/>
+    /// </summary>
+    /// <remarks>
+    /// We need the EDM both to define the Web API OData route and as a
+    /// source of metadata for the Breeze client. 
+    /// The Web API OData literature recommends the
+    /// <see cref="System.Web.Http.OData.Builder.ODataConventionModelBuilder"/>.
+    /// That component is suffient for route definition but fails as a source of 
+    /// metadata for Breeze because (as of this writing) it neglects to include the
+    /// foreign key definitions Breeze requires to maintain navigation properties
+    /// of client-side JavaScript entities.
+    /// <p>This EDM Builder ask the EF DbContext to supply the metadata which 
+    /// satisfy both route definition and Breeze.</p>
+    /// </remarks>
+    public static class EdmBuilder
+    {
+        /// <summary>
+        /// Builds an "Entity Data Model" (EDM) from a <see cref="DbContext"/>
+        /// </summary>
+        /// <example>
+        /// /* In the WebApiConfig.cs */
+        /// using (var context = new TodoListContext())
+        /// {
+        ///   config.Routes.MapODataRoute(
+        ///       routeName: "odata", 
+        ///       routePrefix: "odata", 
+        ///       model: context.GetEdm(), 
+        ///       batchHandler: new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer)
+        ///       );
+        /// }
+        /// </example>
+        /// <param name="dbContext">The source <see cref="DbContext"/></param>
+        /// <returns>An XML <see cref="IEdmModel"/> </returns>
+        public static IEdmModel GetEdm(this DbContext dbContext)
+        {
+            using (var stream = new MemoryStream())
+            {
+                using (var writer = XmlWriter.Create(stream))
+                {
+                    System.Data.Entity.Infrastructure.EdmxWriter.WriteEdmx(dbContext, writer);
+                }
+                stream.Position = 0;
+                using (var reader = XmlReader.Create(stream))
+                {
+                    return EdmxReader.Parse(reader);
+                }
+            }
+        }
+    }
+}