/// <summary>
/// This methods deserializes nested XML elements inside the passed-in element.
/// </summary>
/// <remarks>
/// The caller will guarantee that the current element does have nested XML elements, and the call will position the
/// reader at the open tag of the first child XML element.
/// This method will read as many child XML elements as it can. It returns under three circumstances:
/// 1) When an unknown child XML element is encountered. In this case, this method will position the reader at the open
/// tag of the unknown element. This implies that if the first child XML element is unknown, this method should return
/// immediately and do nothing.
/// 2) When all child XML elemnets are read. In this case, the reader will be positioned at the end tag of the parent element.
/// 3) EOF.
/// </remarks>
/// <param name="serializationContext">Serialization context.</param>
/// <param name="element">In-memory NodeShape instance that will get the deserialized data.</param>
/// <param name="reader">XmlReader to read serialized data from.</param>
protected override void ReadElements(DslModeling.SerializationContext serializationContext, DslModeling.ModelElement element, System.Xml.XmlReader reader)
{
base.ReadElements(serializationContext, element, reader);
while (!serializationContext.Result.Failed && !reader.EOF && reader.NodeType == global::System.Xml.XmlNodeType.Element)
{
switch (reader.LocalName)
{
default:
return; // Don't know this element.
}
}
}
/// <summary>
/// Write extension element data inside the current XML element.
/// </summary>
/// <param name="serializationContext">The current serialization context instance.</param>
/// <param name="element">The element whose attributes have just been written.</param>
/// <param name="writer">XmlWriter to write serialized data to.</param>
/// <remarks>The default implemenation is to write out all non-embedded extension elements,
/// regardless of whether they relate to the current element or not.
/// The additional data should be written as a series of one or more
/// XML elements.</remarks>
protected internal override void WriteExtensions(DslModeling.SerializationContext serializationContext, DslModeling.ModelElement element, XmlWriter writer)
{
Guard.NotNull(() => serializationContext, serializationContext);
Guard.NotNull(() => element, element);
Guard.NotNull(() => writer, writer);
if (!(element is PatternModelSchemaDiagram))
{
var allExtensionElements = element.Partition.ElementDirectory.FindElements(DslModeling.ExtensionElement.DomainClassId, true);
var nonEmbeddedExtensionsElements =
allExtensionElements.Where(e => DslModeling.DomainClassInfo.FindEmbeddingElementLink(e) == null).OfType <DslModeling.ExtensionElement>();
DslModeling.SerializationUtilities.WriteExtensions(serializationContext, writer, nonEmbeddedExtensionsElements);
}
}
/// <summary>
/// Saves the model.
/// </summary>
/// <param name="modelRoot">The model root.</param>
/// <param name="stream">The stream.</param>
internal void SaveModel(PatternModelSchema modelRoot, Stream stream)
{
Guard.NotNull(() => modelRoot, modelRoot);
Guard.NotNull(() => stream, stream);
var context = new DslModeling.SerializationContext(GetDirectory(modelRoot.Store));
this.InitializeSerializationContext(modelRoot.Partition, context, false);
var settings = CreateXmlWriterSettings(context, false, Encoding.UTF8);
using (var writer = XmlWriter.Create(stream, settings))
{
this.WriteRootElement(context, modelRoot, writer);
}
}
/// <summary>
/// This methods serializes 1) properties serialized as nested XML elements and 2) child model elements into XML.
/// </summary>
/// <param name="serializationContext">Serialization context.</param>
/// <param name="element">NodeShape instance to be serialized.</param>
/// <param name="writer">XmlWriter to write serialized data to.</param>
protected override void WriteElements(DslModeling.SerializationContext serializationContext, DslModeling.ModelElement element, System.Xml.XmlWriter writer)
{
base.WriteElements(serializationContext, element, writer);
}
/// <summary>
/// This method deserializes all properties that are serialized as XML attributes.
/// </summary>
/// <remarks>
/// Because this method only handles properties serialized as XML attributes, the passed-in reader shouldn't be moved inside this method.
/// The caller will guarantee that the reader is positioned on the open XML tag of the current element being deserialized.
/// </remarks>
/// <param name="serializationContext">Serialization context.</param>
/// <param name="element">In-memory NodeShape instance that will get the deserialized data.</param>
/// <param name="reader">XmlReader to read serialized data from.</param>
protected override void ReadPropertiesFromAttributes(DslModeling.SerializationContext serializationContext, DslModeling.ModelElement element, System.Xml.XmlReader reader)
{
base.ReadPropertiesFromAttributes(serializationContext, element, reader);
}
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);
}
}
}
}
/// <summary>
/// Saves the model.
/// </summary>
/// <param name="modelRoot">The model root.</param>
/// <param name="stream">The stream.</param>
internal void SaveModel(PatternModelSchema modelRoot, Stream stream)
{
Guard.NotNull(() => modelRoot, modelRoot);
Guard.NotNull(() => stream, stream);
var context = new DslModeling.SerializationContext(GetDirectory(modelRoot.Store));
this.InitializeSerializationContext(modelRoot.Partition, context, false);
var settings = CreateXmlWriterSettings(context, false, Encoding.UTF8);
using (var writer = XmlWriter.Create(stream, settings))
{
this.WriteRootElement(context, modelRoot, writer);
}
}
public PatternModelSchema LoadModel(DslModeling.Store store, Stream stream, DslModeling.ISchemaResolver schemaResolver, DslModeling.ISerializerLocator serializerLocator)
{
Guard.NotNull(() => store, store);
Guard.NotNull(() => stream, stream);
if (!store.DefaultPartition.Store.TransactionActive)
{
throw new InvalidOperationException(PatternModelDomainModel.SingletonResourceManager.GetString("MissingTransaction"));
}
var directory = this.GetDirectory(store.DefaultPartition.Store);
var modelRootSerializer = directory.GetSerializer(PatternModelSchema.DomainClassId);
var serializationResult = new DslModeling.SerializationResult();
Debug.Assert(modelRootSerializer != null, @"Cannot find serializer for PatternModel!");
if (modelRootSerializer != null)
{
PatternModelSchema modelRoot = null;
var serializationContext = new DslModeling.SerializationContext(directory, string.Empty, serializationResult);
this.InitializeSerializationContext(store.DefaultPartition, serializationContext, true);
var transactionContext = new DslModeling.TransactionContext();
transactionContext.Add(DslModeling.SerializationContext.TransactionContextKey, serializationContext);
using (var tx = store.DefaultPartition.Store.TransactionManager.BeginTransaction(Resources.PatternModelSerializationHelper_TransactionDescriptionLoadingModel, true, transactionContext))
{
try
{
var settings = PatternModelSerializationHelper.Instance.CreateXmlReaderSettings(serializationContext, false);
using (var reader = XmlReader.Create(stream, settings))
{
reader.Read();
Encoding encoding;
if (this.TryGetEncoding(reader, out encoding))
{
serializationResult.Encoding = encoding;
}
DslModeling.SerializationUtilities.ResolveDomainModels(reader, serializerLocator, store.DefaultPartition.Store);
reader.MoveToContent();
modelRoot = modelRootSerializer.TryCreateInstance(serializationContext, reader, store.DefaultPartition) as PatternModelSchema;
if (modelRoot != null && !serializationResult.Failed)
{
this.ReadRootElement(serializationContext, modelRoot, reader, schemaResolver);
}
}
}
catch (XmlException ex)
{
DslModeling.SerializationUtilities.AddMessage(serializationContext, DslModeling.SerializationMessageKind.Error, ex);
}
if (modelRoot == null && !serializationResult.Failed)
{
modelRoot = this.CreateModelHelper(store.DefaultPartition);
}
if (tx.IsActive)
{
tx.Commit();
}
}
// Set tracking properties
ResetTrackingProperties(store);
return modelRoot;
}
return null;
}
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);
}
}
}
}
public PatternModelSchema LoadModel(DslModeling.Store store, Stream stream, DslModeling.ISchemaResolver schemaResolver, DslModeling.ISerializerLocator serializerLocator)
{
Guard.NotNull(() => store, store);
Guard.NotNull(() => stream, stream);
if (!store.DefaultPartition.Store.TransactionActive)
{
throw new InvalidOperationException(PatternModelDomainModel.SingletonResourceManager.GetString("MissingTransaction"));
}
var directory = this.GetDirectory(store.DefaultPartition.Store);
var modelRootSerializer = directory.GetSerializer(PatternModelSchema.DomainClassId);
var serializationResult = new DslModeling.SerializationResult();
Debug.Assert(modelRootSerializer != null, @"Cannot find serializer for PatternModel!");
if (modelRootSerializer != null)
{
PatternModelSchema modelRoot = null;
var serializationContext = new DslModeling.SerializationContext(directory, string.Empty, serializationResult);
this.InitializeSerializationContext(store.DefaultPartition, serializationContext, true);
var transactionContext = new DslModeling.TransactionContext();
transactionContext.Add(DslModeling.SerializationContext.TransactionContextKey, serializationContext);
using (var tx = store.DefaultPartition.Store.TransactionManager.BeginTransaction(Resources.PatternModelSerializationHelper_TransactionDescriptionLoadingModel, true, transactionContext))
{
try
{
var settings = PatternModelSerializationHelper.Instance.CreateXmlReaderSettings(serializationContext, false);
using (var reader = XmlReader.Create(stream, settings))
{
reader.Read();
Encoding encoding;
if (this.TryGetEncoding(reader, out encoding))
{
serializationResult.Encoding = encoding;
}
DslModeling.SerializationUtilities.ResolveDomainModels(reader, serializerLocator, store.DefaultPartition.Store);
reader.MoveToContent();
modelRoot = modelRootSerializer.TryCreateInstance(serializationContext, reader, store.DefaultPartition) as PatternModelSchema;
if (modelRoot != null && !serializationResult.Failed)
{
this.ReadRootElement(serializationContext, modelRoot, reader, schemaResolver);
}
}
}
catch (XmlException ex)
{
DslModeling.SerializationUtilities.AddMessage(serializationContext, DslModeling.SerializationMessageKind.Error, ex);
}
if (modelRoot == null && !serializationResult.Failed)
{
modelRoot = this.CreateModelHelper(store.DefaultPartition);
}
if (tx.IsActive)
{
tx.Commit();
}
}
// Set tracking properties
ResetTrackingProperties(store);
return(modelRoot);
}
return(null);
}
