/// <summary>
/// Called immediately before the .edmx document is saved.
/// </summary>
/// <param name="context"></param>
void IModelTransformExtension.OnBeforeModelSaved(ModelTransformExtensionContext context)
{
// context.OriginalDocument = The .edmx document as created by the Entity Designer.
//
// context.CurrentDocument = Make changes to this document using OriginalDocument as a reference.
// This should be the valid .edmx document to be saved.
}
public void GetProperties(ModelTransformExtensionContext context)
{
var edmxDoc = context.CurrentDocument;
//Check for existance and enabled. The property is stored in the Conceptual section.
var property = edmxDoc.Descendants(XName.Get("EdmxAutomationEnabled", "http://schemas.tempuri.com/EdmxAutomationEnabledDesignerExtension")).FirstOrDefault();
if (property == null)
{
//If not present, we default to false;
EdmxAutomationEnabled = false;
}
else
{
//If present and false we accept incoming EDMX..
EdmxAutomationEnabled = Convert.ToBoolean(property.Value);
}
//Check for existance and enabled. The property is stored in the Conceptual section.
property = edmxDoc.Descendants(XName.Get("RefreshOnSaveEnabled", "http://schemas.tempuri.com/RefreshOnSaveEnabledDesignerExtension")).FirstOrDefault();
if (property == null)
{
//If not present, we default to false;
RefreshOnSaveEnabled = false;
}
else
{
//If present and false we accept incoming EDMX..
RefreshOnSaveEnabled = Convert.ToBoolean(property.Value);
}
}
/// <summary>
/// Called after the .edmx document has been loaded, but before the contents are displayed in the
/// Entity Designer.
/// </summary>
/// <param name="context"></param>
void IModelTransformExtension.OnAfterModelLoaded(ModelTransformExtensionContext context)
{
// context.OriginalDocument = The incoming .edmx document.
// This file cannot be modified.
//
// context.CurrentDocument = Make changes to this document using OriginalDocument as a reference.
// This document will be loaded by the Entity Designer.
}
public void ReGenerateSsdlMslAndDdl(ModelTransformExtensionContext context)
{
var path = context.ProjectItem.FileNames[0];
//The version of the Entity Framework loaded in PC.
//The EF Designer offers an upgrade if the version of the EDMX is lower.
var EfVersion = context.EntityFrameworkVersion;
//This is the incoming EDMX document
var edmxDoc = context.CurrentDocument;
var version = _namespaceManager.GetVersionFromEDMXDocument(edmxDoc);
var edmxns = _namespaceManager.GetEDMXNamespaceForVersion(version);
var csns = _namespaceManager.GetCSDLNamespaceForVersion(version);
var ssns = _namespaceManager.GetSSDLNamespaceForVersion(version);
var msns = _namespaceManager.GetMSLNamespaceForVersion(version);
XElement CsdlSchema = edmxDoc.Descendants(XName.Get("Schema", csns.NamespaceName)).FirstOrDefault();
XElement Ssdl = edmxDoc.Descendants(XName.Get("StorageModels", edmxns.NamespaceName)).FirstOrDefault();
XElement SsdlSchema = edmxDoc.Descendants(XName.Get("Schema", ssns.NamespaceName)).FirstOrDefault();
XElement MslSchema = edmxDoc.Descendants(XName.Get("Mapping", msns.NamespaceName)).FirstOrDefault();
XmlReader[] cReaders = { CsdlSchema.CreateReader() };
IList<EdmSchemaError> cErrors = null;
EdmItemCollection edmItemCollection = MetadataItemCollectionFactory.CreateEdmItemCollection(cReaders, out cErrors);
String ssdlOut = String.Empty;
String mslOut = String.Empty;
List<Exception> errors = new List<Exception>();
//Input parameter must be an EdmItemCollection based of the Schema part.
if (RunCsdlToSsdlAndMslActivity.Generate(edmItemCollection, out ssdlOut, out mslOut, errors))
return;
var XssdlOut = XElement.Parse(ssdlOut);
var XmslOut = XElement.Parse(mslOut);
SsdlSchema.ReplaceWith(XssdlOut);
MslSchema.ReplaceWith(XmslOut);
String dslOut = String.Empty;
//Input parameter must be a String based of the Schema part of the CsdlToSsdlAndMslActivity output,
//whereas for Drop statements to be generated, the ExistingSsdl must be provided also based on the
//Schema section.
//if (RunSsdlToDslActivity.Generate(XssdlOut.ToString(), SsdlSchema.ToString(), path, out dslOut, errors))
//{
// return;
//}
//var sql = dslOut;
}
/// <summary>
/// Called after the .edmx document has been loaded, but before the contents are displayed in the
/// Entity Designer.
/// </summary>
/// <param name="context"></param>
void IModelTransformExtension.OnAfterModelLoaded(ModelTransformExtensionContext context)
{
// context.OriginalDocument = The incoming .edmx document.
// This file cannot be modified.
//
// context.CurrentDocument = Make changes to this document using OriginalDocument as a reference.
// This document will be loaded by the Entity Designer.
XElement root = context.CurrentDocument.Root;
string edmxNamespace = root.Name.NamespaceName;
XElement runtime = root.Element(XName.Get("Runtime", edmxNamespace));
XElement conceptualModels = runtime.Element(XName.Get("ConceptualModels", edmxNamespace));
XElement schema = conceptualModels.Elements().FirstOrDefault();
XNamespace schemaNamespace = schema.GetDefaultNamespace();
}
internal static void DispatchToSerializationExtensions(
ICollection<Lazy<IModelTransformExtension>> exports, ModelTransformExtensionContext context, bool loading)
{
if (exports != null)
{
foreach (var exportInfo in exports)
{
var extension = exportInfo.Value;
if (loading)
{
extension.OnAfterModelLoaded(context);
}
else
{
extension.OnBeforeModelSaved(context);
}
}
}
}
/// <summary>
/// Stores the four sections from single edmx model into separate files.
/// </summary>
/// <param name="edmxDoc"></param>
/// <param name="path"></param>
public void StoreEdmxModel(ModelTransformExtensionContext context)
{
try
{
var path = context.ProjectItem.FileNames[0];
//The Edmx document always exists and [hopefully] contains the designer surface property that
//we use to determine whether EDMXFileTools is enabled.
//The User may have set to true in this session to be saved.
var edmxDoc = context.CurrentDocument;
//Update properties as they may have been changed in this session.
GetProperties(context);
if (EdmxAutomationEnabled)
{
//Re-create the Ssdl and Msl to ensure everything is Mapped.
//Entity Designer does not support custom mappings
ReGenerateSsdlMslAndDdl(context);
}
}
catch (Exception ex)
{
var e = new ExtensionError(ex.Message, ex.HResult, ExtensionErrorSeverity.Message);
context.Errors.Add(e);
}
}
/// <summary>
/// Called immediately before the .edmx document is saved.
///
/// Save storage, conceptual, and mapping models in separate files and reset the content of the EDMX model.
/// </summary>
/// <param name="context"></param>
void IModelTransformExtension.OnBeforeModelSaved(ModelTransformExtensionContext context)
{
//Now carryout the Save option, with option recreation of the Ssdl and Msl.
new EdmxTools().StoreEdmxModel(context);
}
/// <summary>
/// Called after the .edmx document has been loaded, but before the contents are displayed in the
/// Entity Designer.
///
/// Construct an EDMX model by loading storage, conceptual, and mapping model from separate files and moerging them
/// into the EDMX model.
/// </summary>
/// <param name="context"></param>
void IModelTransformExtension.OnAfterModelLoaded(ModelTransformExtensionContext context)
{
//AfterModelLoaded only used to access Designer Surface Properties
new EdmxTools().GetProperties(context);
}
