Code:
/ 4.0 / 4.0 / untmp / 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.
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