EntityFrameworkVersions.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntityDesign / Design / System / Data / Entity / Design / EntityFrameworkVersions.cs / 1305376 / EntityFrameworkVersions.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 
using System;
using System.Collections.Generic; 
using System.Text;
using System.Diagnostics;
using System.Reflection;
using System.Data.Metadata.Edm; 
using System.Data.Entity.Design.Common;
using System.IO; 
using System.Data.Mapping; 
using System.Data.EntityModel.SchemaObjectModel;
using System.Linq; 

namespace System.Data.Entity.Design
{
    public static class EntityFrameworkVersions 
    {
        public static readonly Version Version1 = new Version(1, 0, 0, 0); 
        public static readonly Version Version2 = new Version(2, 0, 0, 0); 

        ///  
        /// Returns the stream of the XSD corosponding tot he frameworkVersion, and dataSpace passed in
        /// 
        /// The version of the EntityFramework that you want the Schema XSD for.
        /// The data space of the schem XSD that you want. 
        /// Stream version of the XSD
        public static Stream GetSchemaXsd(Version entityFrameworkVersion, DataSpace dataSpace) 
        { 
            EDesignUtil.CheckTargetEntityFrameworkVersionArgument(entityFrameworkVersion, "entityFrameworkVersion");
 
            string resourceName = null;
            switch(dataSpace)
            {
                case DataSpace.CSpace: 
                    resourceName =  GetEdmSchemaXsdResourceName(entityFrameworkVersion);
                    break; 
                case DataSpace.CSSpace: 
                    resourceName =  GetMappingSchemaXsdResourceName(entityFrameworkVersion);
                    break; 
                case DataSpace.SSpace:
                    resourceName =  GetStoreSchemaXsdResourceName(entityFrameworkVersion);
                    break;
                default: 
                    throw EDesignUtil.Argument("dataSpace");
            } 
 
            Debug.Assert(!string.IsNullOrEmpty(resourceName), "Did you forget to map something new?");
 
            Assembly dataEntity = typeof(EdmItemCollection).Assembly;
            return dataEntity.GetManifestResourceStream(resourceName);
        }
 
        private static string GetStoreSchemaXsdResourceName(Version entityFrameworkVersion)
        { 
            Debug.Assert(IsValidVersion(entityFrameworkVersion), "Did you forget to check for valid versions before calling this private method?"); 
            Dictionary map = new Dictionary();
            XmlSchemaResource.AddStoreSchemaResourceMapEntries(map, GetEdmVersion(entityFrameworkVersion)); 
            return map[GetStoreSchemaNamespace(entityFrameworkVersion)].ResourceName;

        }
 
        private static string GetMappingSchemaXsdResourceName(Version entityFrameworkVersion)
        { 
            Debug.Assert(IsValidVersion(entityFrameworkVersion), "Did you forget to check for valid versions before calling this private method?"); 
            Dictionary map = new Dictionary();
            XmlSchemaResource.AddMappingSchemaResourceMapEntries(map, GetEdmVersion(entityFrameworkVersion)); 
            return map[GetMappingSchemaNamespace(entityFrameworkVersion)].ResourceName;
        }

        private static double GetEdmVersion(Version entityFrameworkVersion) 
        {
            Debug.Assert(IsValidVersion(entityFrameworkVersion), "Did you add a new version or forget to check the version"); 
            if (entityFrameworkVersion.Major == 1) 
            {
                if (entityFrameworkVersion.Minor == 1) 
                {
                    return XmlConstants.EdmVersionForV1_1;
                }
                else 
                {
                    return XmlConstants.EdmVersionForV1; 
                } 
            }
            else 
            {
                Debug.Assert(entityFrameworkVersion == EntityFrameworkVersions.Version2, "did you add a new version?");
                return XmlConstants.EdmVersionForV2;
            } 
        }
 
        private static string GetEdmSchemaXsdResourceName(Version entityFrameworkVersion) 
        {
            Debug.Assert(ValidVersions.Contains(entityFrameworkVersion), "Did you forget to check for valid versions before calling this private method?"); 
            Dictionary map = new Dictionary();
            XmlSchemaResource.AddEdmSchemaResourceMapEntries(map, GetEdmVersion(entityFrameworkVersion));
            return map[GetEdmSchemaNamespace(entityFrameworkVersion)].ResourceName;
        } 

        internal static string GetSchemaNamespace(Version entityFrameworkVersion, DataSpace dataSpace) 
        { 
            Debug.Assert(IsValidVersion(entityFrameworkVersion), "Did you add a new version or forget to check the version");
            Debug.Assert(dataSpace == DataSpace.CSpace || 
                         dataSpace == DataSpace.CSSpace ||
                         dataSpace == DataSpace.SSpace, "only support the three spaces with an xml file format");
            switch (dataSpace)
            { 
                case DataSpace.CSpace:
                    return GetEdmSchemaNamespace(entityFrameworkVersion); 
                case DataSpace.SSpace: 
                    return GetStoreSchemaNamespace(entityFrameworkVersion);
                default: 
                    return GetMappingSchemaNamespace(entityFrameworkVersion);
            }
        }
 
        private static string GetStoreSchemaNamespace(Version entityFrameworkVersion)
        { 
            Debug.Assert(ValidVersions.Contains(entityFrameworkVersion), "Did you forget to check for valid versions before calling this private method?"); 
            if (entityFrameworkVersion == EntityFrameworkVersions.Version1)
            { 
                return XmlConstants.TargetNamespace_1;
            }
            else
            { 
                Debug.Assert(entityFrameworkVersion == EntityFrameworkVersions.Version2, "did you add a new version?");
                return XmlConstants.TargetNamespace_2; 
            } 
        }
 
        private static string GetMappingSchemaNamespace(Version entityFrameworkVersion)
        {
            Debug.Assert(ValidVersions.Contains(entityFrameworkVersion), "Did you forget to check for valid versions before calling this private method?");
            if (entityFrameworkVersion == EntityFrameworkVersions.Version1) 
            {
                return StorageMslConstructs.NamespaceUriV1; 
            } 
            else
            { 
                Debug.Assert(entityFrameworkVersion == EntityFrameworkVersions.Version2, "did you add a new version?");
                return StorageMslConstructs.NamespaceUriV2;
            }
        } 

        private static string GetEdmSchemaNamespace(Version entityFrameworkVersion) 
        { 
            Debug.Assert(ValidVersions.Contains(entityFrameworkVersion), "Did you forget to check for valid versions before calling this private method?");
            if (entityFrameworkVersion == EntityFrameworkVersions.Version1) 
            {
                return XmlConstants.ModelNamespace_1;
            }
            else 
            {
                Debug.Assert(entityFrameworkVersion == EntityFrameworkVersions.Version2, "did you add a new version?"); 
                return XmlConstants.ModelNamespace_2; 
            }
        } 

        internal static Version Latest = Version2;
        private static Version[] ValidVersions = new Version[] { Version1, Version2 };
        internal static bool IsValidVersion(Version entityFrameworkVersion) 
        {
            return ValidVersions.Contains(entityFrameworkVersion); 
        } 

        internal static Version ConvertToVersion(double runtimeVersion) 
        {
            if (runtimeVersion == 1.0 || runtimeVersion == 0.0)
            {
                return Version1; 
            }
            else if (runtimeVersion == 1.1) 
            { 
                // this is not a valid EntityFramework version,
                // but only a valid EdmVersion 
                return new Version(1, 1);
            }
            else
            { 
                Debug.Assert(runtimeVersion == 2.0, "Did you add a new version?");
                return Version2; 
            } 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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EntityFrameworkVersions.cs source code in C# .NET

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