EntityDesignerUtils.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntityDesign / Design / System / Data / Entity / Design / EntityDesignerUtils.cs / 1305376 / EntityDesignerUtils.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System.IO; 
using System.Text;
using System.Xml;
using System.Data.Metadata.Edm;
using System.Data.Mapping; 

namespace System.Data.Entity.Design 
{ 
    internal static class EntityDesignerUtils
    { 
        private static readonly EFNamespaceSet v1Namespaces = new EFNamespaceSet
                                        {
                                            Edmx = "http://schemas.microsoft.com/ado/2007/06/edmx",
                                            Csdl = XmlConstants.ModelNamespace_1, 
                                            Msl =  StorageMslConstructs.NamespaceUriV1,
                                            Ssdl = XmlConstants.TargetNamespace_1 
                                        }; 
        private static readonly EFNamespaceSet v2Namespaces = new EFNamespaceSet
                                        { 
                                            Edmx = "http://schemas.microsoft.com/ado/2008/10/edmx",
                                            Csdl = XmlConstants.ModelNamespace_2,
                                            Msl =  StorageMslConstructs.NamespaceUriV2,
                                            Ssdl = XmlConstants.TargetNamespace_2 
                                        };
        internal static readonly string _edmxFileExtension = ".edmx"; 
 
        /// 
        /// Extract the Conceptual, Mapping and Storage nodes from an EDMX input streams, and extract the value of the metadataArtifactProcessing property. 
        /// 
        /// 
        /// 
        ///  
        /// 
        /// 
        internal static void ExtractConceptualMappingAndStorageNodes(StreamReader edmxInputStream, 
            out XmlElement conceptualSchemaNode, out XmlElement mappingNode, out XmlElement storageSchemaNode, out string metadataArtifactProcessingValue)
        { 
            // load up an XML document representing the edmx file
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.Load(edmxInputStream);
            EFNamespaceSet set = v2Namespaces; 
            if (xmlDocument.DocumentElement.NamespaceURI == v1Namespaces.Edmx)
            { 
                set = v1Namespaces; 
            }
 
            XmlNamespaceManager nsMgr = new XmlNamespaceManager(xmlDocument.NameTable);
            nsMgr.AddNamespace("edmx", set.Edmx);
            nsMgr.AddNamespace("edm", set.Csdl);
            nsMgr.AddNamespace("ssdl", set.Ssdl); 
            nsMgr.AddNamespace("map", set.Msl);
 
            // find the ConceptualModel Schema node 
            conceptualSchemaNode = (XmlElement)xmlDocument.SelectSingleNode(
                "/edmx:Edmx/edmx:Runtime/edmx:ConceptualModels/edm:Schema", nsMgr); 

            // find the StorageModel Schema node
            storageSchemaNode = (XmlElement)xmlDocument.SelectSingleNode(
                "/edmx:Edmx/edmx:Runtime/edmx:StorageModels/ssdl:Schema", nsMgr); 

            // find the Mapping node 
            mappingNode = (XmlElement)xmlDocument.SelectSingleNode( 
                "/edmx:Edmx/edmx:Runtime/edmx:Mappings/map:Mapping", nsMgr);
 
            // find the Connection node

            metadataArtifactProcessingValue = String.Empty;
            XmlNodeList connectionProperties = xmlDocument.SelectNodes( 
                "/edmx:Edmx/edmx:Designer/edmx:Connection/edmx:DesignerInfoPropertySet/edmx:DesignerProperty", nsMgr);
            if (connectionProperties != null) 
            { 
                foreach (XmlNode propertyNode in connectionProperties)
                { 
                    foreach (XmlAttribute a in propertyNode.Attributes)
                    {
                        // treat attribute names case-sensitive (since it is xml), but attribute value case-insensitive to be accommodating .
                        if (a.Name.Equals("Name", StringComparison.Ordinal) && a.Value.Equals("MetadataArtifactProcessing", StringComparison.OrdinalIgnoreCase)) 
                        {
                            foreach (XmlAttribute a2 in propertyNode.Attributes) 
                            { 
                                if (a2.Name.Equals("Value", StringComparison.Ordinal))
                                { 
                                    metadataArtifactProcessingValue = a2.Value;
                                    break;
                                }
                            } 
                        }
                    } 
                } 
            }
        } 

        // utility method to ensure an XmlElement (containing the C, M or S element
        // from the Edmx file) is sent out to a stream in the same format
        internal static void OutputXmlElementToStream(XmlElement xmlElement, Stream stream) 
        {
            XmlWriterSettings settings = new XmlWriterSettings(); 
            settings.Encoding = Encoding.UTF8; 
            settings.Indent = true;
 
            // set up output document
            XmlDocument outputXmlDoc = new XmlDocument();
            XmlNode importedElement = outputXmlDoc.ImportNode(xmlElement, true);
            outputXmlDoc.AppendChild(importedElement); 

            // write out XmlDocument 
            XmlWriter writer = null; 
            try
            { 
                writer = XmlWriter.Create(stream, settings);
                outputXmlDoc.WriteTo(writer);
            }
            finally 
            {
                if (writer != null) { writer.Close(); } 
            } 
        }
 
        private struct EFNamespaceSet
        {
            public string Edmx;
            public string Csdl; 
            public string Msl;
            public string Ssdl; 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner       [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

using System.IO; 
using System.Text;
using System.Xml;
using System.Data.Metadata.Edm;
using System.Data.Mapping; 

namespace System.Data.Entity.Design 
{ 
    internal static class EntityDesignerUtils
    { 
        private static readonly EFNamespaceSet v1Namespaces = new EFNamespaceSet
                                        {
                                            Edmx = "http://schemas.microsoft.com/ado/2007/06/edmx",
                                            Csdl = XmlConstants.ModelNamespace_1, 
                                            Msl =  StorageMslConstructs.NamespaceUriV1,
                                            Ssdl = XmlConstants.TargetNamespace_1 
                                        }; 
        private static readonly EFNamespaceSet v2Namespaces = new EFNamespaceSet
                                        { 
                                            Edmx = "http://schemas.microsoft.com/ado/2008/10/edmx",
                                            Csdl = XmlConstants.ModelNamespace_2,
                                            Msl =  StorageMslConstructs.NamespaceUriV2,
                                            Ssdl = XmlConstants.TargetNamespace_2 
                                        };
        internal static readonly string _edmxFileExtension = ".edmx"; 
 
        /// 
        /// Extract the Conceptual, Mapping and Storage nodes from an EDMX input streams, and extract the value of the metadataArtifactProcessing property. 
        /// 
        /// 
        /// 
        ///  
        /// 
        /// 
        internal static void ExtractConceptualMappingAndStorageNodes(StreamReader edmxInputStream, 
            out XmlElement conceptualSchemaNode, out XmlElement mappingNode, out XmlElement storageSchemaNode, out string metadataArtifactProcessingValue)
        { 
            // load up an XML document representing the edmx file
            XmlDocument xmlDocument = new XmlDocument();
            xmlDocument.Load(edmxInputStream);
            EFNamespaceSet set = v2Namespaces; 
            if (xmlDocument.DocumentElement.NamespaceURI == v1Namespaces.Edmx)
            { 
                set = v1Namespaces; 
            }
 
            XmlNamespaceManager nsMgr = new XmlNamespaceManager(xmlDocument.NameTable);
            nsMgr.AddNamespace("edmx", set.Edmx);
            nsMgr.AddNamespace("edm", set.Csdl);
            nsMgr.AddNamespace("ssdl", set.Ssdl); 
            nsMgr.AddNamespace("map", set.Msl);
 
            // find the ConceptualModel Schema node 
            conceptualSchemaNode = (XmlElement)xmlDocument.SelectSingleNode(
                "/edmx:Edmx/edmx:Runtime/edmx:ConceptualModels/edm:Schema", nsMgr); 

            // find the StorageModel Schema node
            storageSchemaNode = (XmlElement)xmlDocument.SelectSingleNode(
                "/edmx:Edmx/edmx:Runtime/edmx:StorageModels/ssdl:Schema", nsMgr); 

            // find the Mapping node 
            mappingNode = (XmlElement)xmlDocument.SelectSingleNode( 
                "/edmx:Edmx/edmx:Runtime/edmx:Mappings/map:Mapping", nsMgr);
 
            // find the Connection node

            metadataArtifactProcessingValue = String.Empty;
            XmlNodeList connectionProperties = xmlDocument.SelectNodes( 
                "/edmx:Edmx/edmx:Designer/edmx:Connection/edmx:DesignerInfoPropertySet/edmx:DesignerProperty", nsMgr);
            if (connectionProperties != null) 
            { 
                foreach (XmlNode propertyNode in connectionProperties)
                { 
                    foreach (XmlAttribute a in propertyNode.Attributes)
                    {
                        // treat attribute names case-sensitive (since it is xml), but attribute value case-insensitive to be accommodating .
                        if (a.Name.Equals("Name", StringComparison.Ordinal) && a.Value.Equals("MetadataArtifactProcessing", StringComparison.OrdinalIgnoreCase)) 
                        {
                            foreach (XmlAttribute a2 in propertyNode.Attributes) 
                            { 
                                if (a2.Name.Equals("Value", StringComparison.Ordinal))
                                { 
                                    metadataArtifactProcessingValue = a2.Value;
                                    break;
                                }
                            } 
                        }
                    } 
                } 
            }
        } 

        // utility method to ensure an XmlElement (containing the C, M or S element
        // from the Edmx file) is sent out to a stream in the same format
        internal static void OutputXmlElementToStream(XmlElement xmlElement, Stream stream) 
        {
            XmlWriterSettings settings = new XmlWriterSettings(); 
            settings.Encoding = Encoding.UTF8; 
            settings.Indent = true;
 
            // set up output document
            XmlDocument outputXmlDoc = new XmlDocument();
            XmlNode importedElement = outputXmlDoc.ImportNode(xmlElement, true);
            outputXmlDoc.AppendChild(importedElement); 

            // write out XmlDocument 
            XmlWriter writer = null; 
            try
            { 
                writer = XmlWriter.Create(stream, settings);
                outputXmlDoc.WriteTo(writer);
            }
            finally 
            {
                if (writer != null) { writer.Close(); } 
            } 
        }
 
        private struct EFNamespaceSet
        {
            public string Edmx;
            public string Csdl; 
            public string Msl;
            public string Ssdl; 
        } 
    }
} 

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

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