private static EntityDesignerDiagram TranslateDiagramValues(EntityDesignerViewModel viewModel, DesignerModel.Diagram modelDiagram)
{
var diagram = viewModel.GetDiagram();
Debug.Assert(diagram != null, "Why diagram is null?");
if (diagram != null)
{
if (viewModel.ModelXRef.ContainsKey(modelDiagram) == false)
{
viewModel.ModelXRef.Add(modelDiagram, diagram, viewModel.EditingContext);
}
using (var t = diagram.Store.TransactionManager.BeginTransaction("Translate diagram values", true))
{
// set zoom level, grid and scalar property options
diagram.ZoomLevel = modelDiagram.ZoomLevel.Value;
diagram.ShowGrid = modelDiagram.ShowGrid.Value;
diagram.SnapToGrid = modelDiagram.SnapToGrid.Value;
diagram.DisplayNameAndType = modelDiagram.DisplayType.Value;
diagram.Title = modelDiagram.Name.Value;
diagram.DiagramId = modelDiagram.Id.Value;
t.Commit();
}
}
return(diagram);
}
/// <summary>
/// Translate model EntityType into view EntityType (creates a view EntityType if not yet created)
/// </summary>
/// <param name="viewModel"></param>
/// <param name="entityType"></param>
/// <param name="processChildren"></param>
/// <returns></returns>
private static ViewModelEntityType TranslateEntityType(EntityDesignerViewModel viewModel, ConceptualEntityType entityType)
{
var viewET =
ModelToDesignerModelXRef.GetNewOrExisting(viewModel.EditingContext, entityType, viewModel.Partition) as ViewModelEntityType;
viewET.Name = entityType.LocalName.Value;
return(viewET);
}
internal override EntityDesignerViewModel LoadModelAndDiagram(
SerializationResult serializationResult, Partition modelPartition, string modelFileName, Partition diagramPartition,
string diagramFileName, ISchemaResolver schemaResolver, ValidationController validationController,
ISerializerLocator serializerLocator)
{
EntityDesignerViewModel evm = null;
using (new VsUtils.HourglassHelper())
{
evm = LoadModel(serializationResult, modelPartition, modelFileName, schemaResolver, validationController, serializerLocator);
var diagram = CreateDiagramHelper(diagramPartition, evm);
}
return(evm);
}
private EntityDesignerDiagram CreateDslDiagram(EntityDesignerViewModel evm)
{
var docData = DocData as MicrosoftDataEntityDesignDocDataBase;
EntityDesignerDiagram diagram = null;
Debug.Assert(docData != null, "DocData is not a type of MicrosoftDataEntityDesignDocDataBase");
if (docData != null)
{
diagram = MicrosoftDataEntityDesignSerializationHelper.Instance.CreateDiagramHelper(docData.GetDiagramPartition(), evm);
// Set diagram name here otherwise DSL will assign one when diagram is loaded in the view which causes a transaction to be committed.
// When the transaction is committed our custom DSL rules will get fired. At that point Debug.Assert might be fired because the xref might not properly set.
// It doesn't matter if the name is the same across multiple diagram because we don't use it.
diagram.Name = Path.GetFileNameWithoutExtension(DocData.FileName);
}
return(diagram);
}
/// <summary>
/// This method removes all of the child elements of the EntityDesignerViewModel.
/// </summary>
internal static void ClearModel(EntityDesignerViewModel viewModel)
{
// The assumption is that if ModelXRef is null or we cannot get the diagram, DSL Model is empty
if (viewModel.ModelXRef == null ||
viewModel.GetDiagram() == null)
{
return;
}
using (var t = viewModel.Store.TransactionManager.BeginTransaction("ClearModel", true))
{
// delete inheritance first
foreach (var melem in viewModel.ModelXRef.ReferencedViewElements)
{
if (melem is Inheritance)
{
melem.Delete();
}
}
// delete associations next
foreach (var melem in viewModel.ModelXRef.ReferencedViewElements)
{
if (melem is Association)
{
melem.Delete();
}
}
// delete entities last
foreach (var melem in viewModel.ModelXRef.ReferencedViewElements)
{
if (melem is EntityType)
{
melem.Delete();
}
}
// clear out the XRef
viewModel.ModelXRef.Clear();
if (t.IsActive)
{
t.Commit();
}
}
}
private static void TranslateDiagramObjectHelper(
EntityDesignerViewModel viewModel, ModelDiagram.BaseDiagramObject modelDiagramEFObject,
EFObject modelObjectToFindViewModel, bool updateShapeElements, UpdateShapeInfoCallback updateShapeInfoCallback)
{
var diagram = viewModel.GetDiagram();
EFObject diagramEFObject = modelDiagramEFObject;
Debug.Assert(diagram != null, "Where is the DSL diagram?");
Debug.Assert(diagramEFObject != null, "Where is the EFObject corresponding to the diagram?");
if (diagram != null &&
diagramEFObject != null)
{
var shapeElement = viewModel.ModelXRef.GetExisting(diagramEFObject) as ViewModelDiagram.ShapeElement;
if (shapeElement == null)
{
// find the view model associated with the model EFObject
var viewModelElement = viewModel.ModelXRef.GetExisting(modelObjectToFindViewModel);
Debug.Assert(viewModelElement != null, "Where is the view model for the model object?");
if (viewModelElement != null)
{
// get the shape element fromm the view model
shapeElement = diagram.FindShape(viewModelElement);
Debug.Assert(shapeElement != null, "Where is the DSL ShapeElement for the view model?");
if (shapeElement != null)
{
// associate the designer model EFObject with the shape element
if ((viewModel.ModelXRef.GetExisting(diagramEFObject) == null) &&
(viewModel.ModelXRef.GetExisting(shapeElement) == null))
{
viewModel.ModelXRef.Add(diagramEFObject, shapeElement, viewModel.EditingContext);
}
}
}
}
// update the shape information for the element
if (updateShapeElements && shapeElement != null)
{
updateShapeInfoCallback(shapeElement);
}
}
}
/// <summary>
/// This method reads the .diagram file and makes sure that shapes exist for every item
/// in the .diagram file.
/// </summary>
internal static void ReloadDiagram(EntityDesignerViewModel viewModel)
{
var diagram = viewModel.GetDiagram();
if (diagram == null)
{
// Empty DSL diagram
return;
}
diagram.ResetWatermark(diagram.ActiveDiagramView);
// get our artifact
var artifact = EditingContextManager.GetArtifact(viewModel.EditingContext);
Debug.Assert(artifact != null);
if (!artifact.IsDesignerSafe)
{
return;
}
var diagramModel = viewModel.ModelXRef.GetExisting(diagram) as DesignerModel.Diagram;
if (diagramModel != null)
{
// ensure that we still have all of the parts we need to re-translate from the Model
EntityModelToDslModelTranslatorStrategy.TranslateDiagram(diagram, diagramModel);
}
else
{
// this path will usually only happen if an UMFDB extension has deleted the diagram node
// since we don't have a diagram anymore, lay it all out and create a new one
if (diagram.ModelElement.EntityTypes.Count < EntityDesignerDiagram.IMPLICIT_AUTO_LAYOUT_CEILING)
{
diagram.AutoLayoutDiagram();
}
EntityModelToDslModelTranslatorStrategy.CreateDefaultDiagram(viewModel.EditingContext, diagram);
}
// remove "Select All" selection
if (diagram.ActiveDiagramView != null)
{
diagram.ActiveDiagramView.Selection.Set(new DiagramItem(diagram));
}
}
internal override EntityDesignerViewModel LoadModel(
SerializationResult serializationResult, Partition partition, string fileName, ISchemaResolver schemaResolver,
ValidationController validationController, ISerializerLocator serializerLocator)
{
var docData = VSHelpers.GetDocData(PackageManager.Package, fileName) as IEntityDesignDocData;
docData.CreateAndLoadBuffer();
EntityDesignerViewModel evm = null;
var serializationContext = new SerializationContext(GetDirectory(partition.Store), fileName, serializationResult);
var transactionContext = new TransactionContext();
transactionContext.Add(SerializationContext.TransactionContextKey, serializationContext);
using (var t = partition.Store.TransactionManager.BeginTransaction("Load Model from " + fileName, true, transactionContext))
{
var uri = Tools.XmlDesignerBase.Base.Util.Utils.FileName2Uri(fileName);
var context = PackageManager.Package.DocumentFrameMgr.EditingContextManager.GetNewOrExistingContext(uri);
evm =
ModelTranslatorContextItem.GetEntityModelTranslator(context).TranslateModelToDslModel(null, partition) as
EntityDesignerViewModel;
if (evm == null)
{
serializationResult.Failed = true;
}
else
{
if (t.IsActive)
{
t.Commit();
}
}
}
// Validate imported model
if (!serializationResult.Failed &&
(validationController != null))
{
validationController.Validate(partition, ValidationCategories.Load);
}
return(evm);
}
/// <summary>
/// This method will remove all child shapes of the EntityDesignerDiagram.
/// </summary>
internal static void ClearDiagram(EntityDesignerViewModel viewModel)
{
var diagram = viewModel.GetDiagram();
if (diagram != null)
{
using (var t = viewModel.Store.TransactionManager.BeginTransaction("ClearDiagram", true))
{
// make copy of AllElements so that we don't modify the collection while we are iterating over it.
// We are only interested to the model elements that belong to the viewModel; so look at the Partition's ElementDirectory
// instead of Store's ElementDirectory which is shared across diagram.
Debug.Assert(viewModel.Partition != null, "ViewModel's Partition should never be null.");
if (viewModel.Partition != null)
{
var elementDirectory = viewModel.Partition.ElementDirectory;
Debug.Assert(
elementDirectory != null, "ElementDirectory in partition for view model :" + diagram.Title + " is null.");
if (elementDirectory != null)
{
var allElements = new List <ModelElement>(elementDirectory.AllElements.Count);
allElements.AddRange(elementDirectory.AllElements);
foreach (var melem in allElements)
{
// don't delete our diagram, but remove every other presentation element
if (melem is PresentationElement &&
(melem is EntityDesignerDiagram) == false)
{
melem.Delete();
}
}
}
}
if (t.IsActive)
{
t.Commit();
}
}
}
}
internal override void SaveModelAndDiagram(
SerializationResult serializationResult, EntityDesignerViewModel modelRoot, string modelFileName, EntityDesignerDiagram diagram,
string diagramFileName, Encoding encoding, bool writeOptionalPropertiesWithDefaultValue)
{
// only save the model
base.SaveModel(serializationResult, modelRoot, modelFileName, encoding, writeOptionalPropertiesWithDefaultValue);
if (!serializationResult.Failed)
{
// flip our dirty bit (as long as we aren't trying to save the auto-recovery backup file)
var artifact = EditingContextManager.GetArtifact(modelRoot.EditingContext);
Debug.Assert(artifact != null, "Failed to get a valid EFArtifact from the context");
IEntityDesignDocData docData = null;
var fileName = String.Empty;
if (artifact != null)
{
fileName = artifact.Uri.LocalPath;
}
docData = VSHelpers.GetDocData(PackageManager.Package, fileName) as IEntityDesignDocData;
Debug.Assert(docData != null, "Couldn't locate our DocData");
if (artifact != null &&
docData != null &&
!string.Equals(docData.BackupFileName, modelFileName, StringComparison.OrdinalIgnoreCase))
{
artifact.IsDirty = false;
}
// SaveDiagram file if the file exists
// TODO: What happened if saving diagram file failed? Should we rollback the model file?
var diagramDocData =
VSHelpers.GetDocData(PackageManager.Package, fileName + EntityDesignArtifact.ExtensionDiagram) as XmlModelDocData;
if (diagramDocData != null)
{
int saveIsCancelled;
diagramDocData.SaveDocData(VSSAVEFLAGS.VSSAVE_SilentSave, out diagramFileName, out saveIsCancelled);
}
}
}
/// <summary>
/// Translate base type of a model EntityType into view Inheritance (creates an Inheritance if not yet created)
/// </summary>
/// <param name="viewModel"></param>
/// <param name="entityType"></param>
/// <returns></returns>
private static Inheritance TranslateBaseType(EntityDesignerViewModel viewModel, ConceptualEntityType entityType)
{
if (entityType.BaseType.Status == BindingStatus.Known)
{
var baseType =
ModelToDesignerModelXRef.GetExisting(viewModel.EditingContext, entityType.BaseType.Target, viewModel.Partition) as
ViewModelEntityType;
var derivedType =
ModelToDesignerModelXRef.GetExisting(viewModel.EditingContext, entityType, viewModel.Partition) as ViewModelEntityType;
// in Multiple diagram scenario, baseType and derivedType might not exist in the diagram.
if (baseType != null &&
derivedType != null)
{
return
(ModelToDesignerModelXRef.GetNewOrExisting(viewModel.EditingContext, entityType.BaseType, baseType, derivedType) as
Inheritance);
}
}
return(null);
}
private void TranslateEntityModel(
IEnumerable <ModelEntityType> entityTypes,
IEnumerable <ModelAssociation> associations,
EntityDesignerViewModel entityViewModel)
{
// create each entity type and add its properties
foreach (var et in entityTypes)
{
var cet = et as ConceptualEntityType;
Debug.Assert(cet != null, "EntityType is not ConceptualEntityType");
var viewET = TranslateEntityType(entityViewModel, cet);
entityViewModel.EntityTypes.Add(viewET);
TranslatePropertiesOfEntityType(et, viewET);
}
// create any inheritance relationships
foreach (var et in entityTypes)
{
var cet = et as ConceptualEntityType;
Debug.Assert(cet != null, "EntityType is not ConceptualEntityType");
TranslateBaseType(entityViewModel, cet);
}
// create the associations
foreach (var assoc in associations)
{
TranslateAssociation(entityViewModel, assoc);
}
// add navigation properties to the entities
foreach (var et in entityTypes)
{
var viewET =
ModelToDesignerModelXRef.GetNewOrExisting(entityViewModel.EditingContext, et, entityViewModel.Partition) as
ViewModelEntityType;
Debug.Assert(viewET != null, "Why wasn't the entity shape added already?");
TranslateNavigationPropertiesOfEntityType(et, viewET);
}
}
internal override MemoryStream InternalSaveModel(
SerializationResult serializationResult, EntityDesignerViewModel modelRoot, string fileName, Encoding encoding,
bool writeOptionalPropertiesWithDefaultValue)
{
IEntityDesignDocData docData = null;
MemoryStream stream = null;
Debug.Assert(modelRoot.EditingContext != null, "Designer model root has a null EditingContext");
if (modelRoot.EditingContext != null)
{
// find our doc data; don't use the passed in fileName as this will be the new name
// during a SaveAs operation
var artifact = EditingContextManager.GetArtifact(modelRoot.EditingContext);
if (artifact != null)
{
docData = VSHelpers.GetDocData(PackageManager.Package, artifact.Uri.LocalPath) as IEntityDesignDocData;
}
Debug.Assert(docData != null, "Couldn't locate our DocData");
if (docData != null)
{
var text = docData.GetBufferTextForSaving();
if (!string.IsNullOrEmpty(text))
{
stream = FileUtils.StringToStream(text, encoding) as MemoryStream;
}
}
}
// if we don't have a stream, then we couldn't serialize for some reason
if (stream == null)
{
serializationResult.Failed = true;
}
return(stream);
}
private static ModelElement CreateModelElementForEFObjectType(EFObject obj, Partition partition)
{
ModelElement modelElement = null;
var t = obj.GetType();
if (t == typeof(ConceptualEntityModel))
{
modelElement = new EntityDesignerViewModel(partition);
}
else if (t == typeof(ConceptualEntityType))
{
modelElement = new EntityType(partition);
}
else if (t == typeof(ConceptualProperty))
{
modelElement = new ScalarProperty(partition);
}
else if (t == typeof(ComplexConceptualProperty))
{
modelElement = new ComplexProperty(partition);
}
else if (t == typeof(Association))
{
modelElement = new ViewModel.Association(partition);
}
else if (t == typeof(EntityTypeBaseType))
{
modelElement = new Inheritance(partition);
}
else if (t == typeof(NavigationProperty))
{
modelElement = new ViewModel.NavigationProperty(partition);
}
return(modelElement);
}
internal static void TranslateDiagramObject(
EntityDesignerViewModel viewModel, ModelDiagram.BaseDiagramObject modelDiagramObject,
bool updateShapeElements, IList <ViewModelDiagram.ShapeElement> shapesToAutoLayout)
{
Debug.Assert(modelDiagramObject is EFObject, "Why did you define a DiagramEFObject that is not an EFObject?");
var modelEntityTypeShape = modelDiagramObject as DesignerModel.EntityTypeShape;
// the view model could have gotten deleted as a result of OnEFObjectDeleted() so don't attempt to translate the diagram EFObject.
if (modelEntityTypeShape != null &&
modelEntityTypeShape.IsDisposed != true &&
modelEntityTypeShape.EntityType.Target != null &&
modelEntityTypeShape.EntityType.Target.IsDisposed != true)
{
TranslateDiagramObjectHelper(
viewModel, modelDiagramObject, modelEntityTypeShape.EntityType.Target, updateShapeElements,
shapeElement =>
{
var viewEntityTypeShape = shapeElement as EntityTypeShape;
var rectangle = new ViewModelDiagram.RectangleD(
modelEntityTypeShape.PointX.Value
, modelEntityTypeShape.PointY.Value, modelEntityTypeShape.Width.Value, 0.0);
viewEntityTypeShape.AbsoluteBounds = rectangle;
viewEntityTypeShape.IsExpanded = modelEntityTypeShape.IsExpanded.Value;
if (!shapesToAutoLayout.Contains(viewEntityTypeShape))
{
shapesToAutoLayout.Add(viewEntityTypeShape);
}
// Loop through all the shape's connectors and add the connector to list to be autolayout if the connector is not manually routed.
foreach (var linkShape in viewEntityTypeShape.Link)
{
if (linkShape.ManuallyRouted == false &&
shapesToAutoLayout.Contains(linkShape) == false)
{
shapesToAutoLayout.Add(linkShape);
}
}
});
var dslEntityTypeShape = viewModel.ModelXRef.GetExisting(modelEntityTypeShape) as EntityTypeShape;
// dslEntityTypeShape is null if the entity-type is deleted, in that case skip sync FillColor property.
if (dslEntityTypeShape != null)
{
dslEntityTypeShape.FillColor = modelEntityTypeShape.FillColor.Value;
}
}
// the view model could have gotten deleted as a result of OnEFObjectDeleted() so don't attempt to translate the diagram EFObject.
var modelAssociationConnectorShape = modelDiagramObject as DesignerModel.AssociationConnector;
if (modelAssociationConnectorShape != null &&
modelAssociationConnectorShape.IsDisposed != true &&
modelAssociationConnectorShape.Association.Target != null &&
modelAssociationConnectorShape.Association.Target.IsDisposed != true)
{
TranslateDiagramObjectHelper(
viewModel, modelDiagramObject, modelAssociationConnectorShape.Association.Target, true,
shapeElement => TranslateAssociationConnectors(
shapeElement as AssociationConnector, modelAssociationConnectorShape, shapesToAutoLayout));
}
// the view model could have gotten deleted as a result of OnEFObjectDeleted() so don't attempt to translate the diagram EFObject.
var modelInheritanceConnectorShape = modelDiagramObject as DesignerModel.InheritanceConnector;
if (modelInheritanceConnectorShape != null &&
modelInheritanceConnectorShape.IsDisposed != true &&
modelInheritanceConnectorShape.EntityType.Target != null &&
modelInheritanceConnectorShape.EntityType.Target.IsDisposed != true)
{
var cet = modelInheritanceConnectorShape.EntityType.Target as ConceptualEntityType;
if (cet != null &&
cet.BaseType != null &&
cet.BaseType.RefName != null)
{
TranslateDiagramObjectHelper(
viewModel, modelDiagramObject, cet.BaseType, true,
shapeElement => TranslateInheritanceConnectors(
shapeElement as InheritanceConnector, modelInheritanceConnectorShape, shapesToAutoLayout));
}
}
}
internal override DslModeling.ModelElement TranslateModelToDslModel(EFObject modelElement, DslModeling.Partition partition)
{
DesignerModel.Diagram diagram = null;
if (modelElement != null)
{
diagram = modelElement as DesignerModel.Diagram;
if (diagram == null)
{
throw new ArgumentException("modelElement should be a diagram");
}
}
// get the service so that we can access the root of the entity model
var service = _editingContext.GetEFArtifactService();
if (service == null)
{
throw new InvalidOperationException(EntityDesignerResources.Error_NoArtifactService);
}
EntityDesignerViewModel entityViewModel = null;
var entityDesignArtifact = service.Artifact as EntityDesignArtifact;
Debug.Assert(entityDesignArtifact != null, "Artifact is not type of EntityDesignArtifact");
if (entityDesignArtifact != null)
{
// Only translate the Escher Model to Dsl Model if the artifact is designer safe.
if (entityDesignArtifact.IsDesignerSafe)
{
// now get the root of the model.
var model = entityDesignArtifact.ConceptualModel;
Debug.Assert(model != null, "Could not get ConceptualModel from the artifact.");
if (model != null)
{
entityViewModel =
ModelToDesignerModelXRef.GetNewOrExisting(_editingContext, model, partition) as EntityDesignerViewModel;
entityViewModel.Namespace = model.Namespace.Value;
// If the passed-in diagram is null, retrieve the first diagram if available.
if (diagram == null &&
entityDesignArtifact.DesignerInfo() != null &&
entityDesignArtifact.DesignerInfo().Diagrams != null &&
entityDesignArtifact.DesignerInfo().Diagrams.FirstDiagram != null)
{
diagram = entityDesignArtifact.DesignerInfo().Diagrams.FirstDiagram;
}
IList <ModelEntityType> entities;
IList <ModelAssociation> associations;
if (diagram != null)
{
RetrieveModelElementsFromDiagram(diagram, out entities, out associations);
}
else
{
entities = model.EntityTypes().ToList();
associations = model.Associations().ToList();
}
TranslateEntityModel(entities, associations, entityViewModel);
}
}
else
{
// return empty view model if the artifact is not designer safe so the Diagram can show safe-mode watermark
entityViewModel = new EntityDesignerViewModel(partition);
entityViewModel.EditingContext = _editingContext;
}
}
return(entityViewModel);
}
/// <summary>
/// Translate model Association into view Association (creates a view Association if not yet created)
/// </summary>
/// <param name="viewModel"></param>
/// <param name="association"></param>
/// <returns></returns>
private static ViewModelAssociation TranslateAssociation(
EntityDesignerViewModel viewModel,
ModelAssociation association)
{
var ends = association.AssociationEnds();
var end1 = ends[0];
var end2 = ends[1];
if (end1.Type.Status == BindingStatus.Known &&
end2.Type.Status == BindingStatus.Known)
{
var viewEnd1 =
ModelToDesignerModelXRef.GetExisting(viewModel.EditingContext, end1.Type.Target, viewModel.Partition) as
ViewModelEntityType;
var viewEnd2 =
ModelToDesignerModelXRef.GetExisting(viewModel.EditingContext, end2.Type.Target, viewModel.Partition) as
ViewModelEntityType;
// Only create association if both entityType exist.
if (viewEnd1 != null &&
viewEnd2 != null)
{
var viewAssoc =
ModelToDesignerModelXRef.GetNewOrExisting(viewModel.EditingContext, association, viewEnd1, viewEnd2) as
ViewModelAssociation;
viewAssoc.Name = association.LocalName.Value;
viewAssoc.SourceMultiplicity = end1.Multiplicity.Value;
viewAssoc.TargetMultiplicity = end2.Multiplicity.Value;
// There could be a situation where association is created after navigation property (for example: the user add an entity-type and then add related types ).
// In that case we need to make sure that view's association and navigation property are linked.
Debug.Assert(
end1.Type.Target != null, "Association End: " + end1.DisplayName + " does not reference a valid entity-type.");
if (end1.Type.Target != null)
{
var modelSourceNavigationProperty =
ModelHelper.FindNavigationPropertyForAssociationEnd(end1.Type.Target as ConceptualEntityType, end1);
if (modelSourceNavigationProperty != null)
{
var viewSourceNavigationProperty =
ModelToDesignerModelXRef.GetExisting(
viewModel.EditingContext, modelSourceNavigationProperty, viewModel.Partition) as
ViewModelNavigationProperty;
if (viewSourceNavigationProperty != null)
{
viewAssoc.SourceNavigationProperty = viewSourceNavigationProperty;
viewSourceNavigationProperty.Association = viewAssoc;
}
}
}
Debug.Assert(
end2.Type.Target != null, "Association End: " + end2.DisplayName + " does not reference a valid entity-type.");
if (end2.Type.Target != null)
{
var modelTargetNavigatioNProperty =
ModelHelper.FindNavigationPropertyForAssociationEnd(end2.Type.Target as ConceptualEntityType, end2);
if (modelTargetNavigatioNProperty != null)
{
var viewTargetNavigationProperty =
ModelToDesignerModelXRef.GetExisting(
viewModel.EditingContext, modelTargetNavigatioNProperty, viewModel.Partition) as
ViewModelNavigationProperty;
if (viewTargetNavigationProperty != null)
{
viewAssoc.TargetNavigationProperty = viewTargetNavigationProperty;
viewTargetNavigationProperty.Association = viewAssoc;
}
}
}
return(viewAssoc);
}
}
return(null);
}
/// <summary>
/// This method loads the DSL view model with the items in the artifact's C-Model.
/// </summary>
internal void ReloadModel(EntityDesignerViewModel viewModel)
{
var diagram = viewModel.GetDiagram();
if (diagram == null)
{
// empty DSL diagram
return;
}
// get our artifact
var artifact = EditingContextManager.GetArtifact(viewModel.EditingContext) as EntityDesignArtifact;
Debug.Assert(artifact != null);
var serializationResult = new SerializationResult();
var serializationContext = new SerializationContext(GetDirectory(viewModel.Store), artifact.Uri.LocalPath, serializationResult);
var transactionContext = new TransactionContext();
transactionContext.Add(SerializationContext.TransactionContextKey, serializationContext);
var workaroundFixSerializationTransactionValue = false;
if (viewModel.Store.PropertyBag.ContainsKey("WorkaroundFixSerializationTransaction"))
{
workaroundFixSerializationTransactionValue = (bool)viewModel.Store.PropertyBag["WorkaroundFixSerializationTransaction"];
}
try
{
// To fix performance issue during reload, we turn-off layout during "serialization".
viewModel.Store.PropertyBag["WorkaroundFixSerializationTransaction"] = true;
using (var t = viewModel.Store.TransactionManager.BeginTransaction("ReloadModel", true, transactionContext))
{
if (artifact.ConceptualModel() == null)
{
return;
}
DesignerModel.Diagram diagramModel = null;
// If DiagramId is not string empty, try to get the diagram from the artifact.
// There is a situation where we could not find the diagram given an ID (for example: EDMX Model's Diagram that is created by VS before SQL 11;
// In that case, we assign temporary ID to the diagram and a new ID will be generated every time the model is reloaded.)
// We could safely choose the first diagram since multiple diagrams feature didn't exist in VS prior to SQL11 release.
if (!string.IsNullOrEmpty(diagram.DiagramId))
{
diagramModel = artifact.DesignerInfo.Diagrams.GetDiagram(diagram.DiagramId);
}
if (diagramModel == null)
{
diagramModel = artifact.DesignerInfo.Diagrams.FirstDiagram;
}
if (diagramModel != null)
{
// Re-establish the xref between Escher conceptual model and DSL root model.
// and between Escher Diagram model and DSL diagram model.
Debug.Assert(viewModel.ModelXRef != null, "Why ModelXRef is null?");
if (viewModel.ModelXRef != null)
{
viewModel.ModelXRef.Add(artifact.ConceptualModel(), viewModel, viewModel.EditingContext);
viewModel.ModelXRef.Add(diagramModel, diagram, viewModel.EditingContext);
ModelTranslatorContextItem.GetEntityModelTranslator(viewModel.EditingContext)
.TranslateModelToDslModel(diagramModel, viewModel.Partition);
}
}
if (t.IsActive)
{
t.Commit();
}
}
}
finally
{
viewModel.Store.PropertyBag["WorkaroundFixSerializationTransaction"] = workaroundFixSerializationTransactionValue;
}
}
