private void LoadDiagram(
DslModeling.SerializationResult serializationResult,
DslModeling.Partition diagramPartition,
PatternModelSchema modelRoot,
DslModeling.DomainXmlSerializerDirectory directory,
DslModeling.DomainClassXmlSerializer diagramSerializer,
string diagramFileName,
DslModeling.ISchemaResolver schemaResolver,
ValidationController validationController)
{
if (diagramSerializer != null)
{
PatternModelSchemaDiagram diagram = null;
using (FileStream fileStream = File.OpenRead(diagramFileName))
{
var serializationContext = new DslModeling.SerializationContext(directory, fileStream.Name, serializationResult);
this.InitializeSerializationContext(diagramPartition, serializationContext, true);
var transactionContext = new DslModeling.TransactionContext();
transactionContext.Add(DslModeling.SerializationContext.TransactionContextKey, serializationContext);
using (var transaction = diagramPartition.Store.TransactionManager.BeginTransaction(Resources.PatternModelSerializationHelper_TransactionDescriptionLoadingDiagram, true, transactionContext))
{
// Ensure there is some content in the file. Blank (or almost blank, to account for encoding header bytes, etc.)
// files will cause a new diagram to be created and returned
if (fileStream.Length > 5)
{
var settings = PatternModelSerializationHelper.Instance.CreateXmlReaderSettings(serializationContext, false);
try
{
using (var reader = XmlReader.Create(fileStream, settings))
{
reader.MoveToContent();
diagram = diagramSerializer.TryCreateInstance(serializationContext, reader, diagramPartition) as PatternModelSchemaDiagram;
if (diagram != null)
{
this.ReadRootElement(serializationContext, diagram, reader, schemaResolver);
}
}
}
catch (XmlException ex)
{
DslModeling.SerializationUtilities.AddMessage(serializationContext, DslModeling.SerializationMessageKind.Error, ex);
}
if (serializationResult.Failed)
{
// Serialization error encountered, rollback the transaction.
diagram = null;
transaction.Rollback();
}
}
if (diagram == null && !serializationResult.Failed)
{
// Create diagram if it doesn't exist
if (diagramFileName.EndsWith(DesignerConstants.DiagramFileExtension, StringComparison.OrdinalIgnoreCase))
{
diagram = new PatternModelSchemaDiagram(
diagramPartition.Store,
new DslModeling.PropertyAssignment(DslDiagrams.Diagram.NameDomainPropertyId, Guid.NewGuid()));
}
else
{
diagram = this.CreateDiagramHelper(diagramPartition, modelRoot);
}
}
if (transaction.IsActive)
{
transaction.Commit();
}
} // End inner Tx
// Do load-time validation if a ValidationController is provided.
if (!serializationResult.Failed && validationController != null)
{
using (new SerializationValidationObserver(serializationResult, validationController))
{
validationController.Validate(diagramPartition, ValidationCategories.Load);
}
}
}
if (diagram != null)
{
if (!serializationResult.Failed)
{ // Succeeded.
diagram.ModelElement = modelRoot;
diagram.PostDeserialization(true);
this.CheckForOrphanedShapes(diagram, serializationResult);
}
else
{ // Failed.
diagram.PostDeserialization(false);
}
}
}
}