private ChangeData CreateChangeData(DescriptorData descriptorData, IDictionary <object, IEnumerable <NamedValue> > propertyValuesBeforeSave)
{
var entityDescriptorData = descriptorData as EntityDescriptorData;
if (entityDescriptorData != null)
{
IEnumerable <NamedValue> propertyValues;
ExceptionUtilities.Assert(propertyValuesBeforeSave.TryGetValue(entityDescriptorData.Entity, out propertyValues), "Could not find property values for descriptor: {0}", entityDescriptorData);
return(EntityChangeData.Create(entityDescriptorData, propertyValues));
}
var linkDescriptorData = descriptorData as LinkDescriptorData;
ExceptionUtilities.CheckObjectNotNull(linkDescriptorData, "Descriptor was neither an entity nor a link");
return(LinkChangeData.Create(linkDescriptorData));
}
/// <summary>
/// Creates LinkChangeData which captures the state of the specified link descriptor data.
/// </summary>
/// <param name="linkData">The link descriptor data.</param>
/// <returns>Link change data.</returns>
public static LinkChangeData Create(LinkDescriptorData linkData)
{
ExceptionUtilities.CheckArgumentNotNull(linkData, "linkData");
LinkChangeData changeData = new LinkChangeData(linkData);
var isEnumerable = linkData.SourceDescriptor.EntityClrType.GetProperty(linkData.SourcePropertyName).PropertyType.GetInterfaces().Any(t => t.Name == "IEnumerable");
changeData.IsReference = !isEnumerable;
if (linkData.TargetDescriptor != null)
{
changeData.ClrTypeForRequery = linkData.TargetDescriptor.EntityClrType;
}
else
{
ExceptionUtilities.Assert(changeData.IsReference, "TargetDescriptor can not be null for the link descriptor representing collection.");
changeData.ClrTypeForRequery = linkData.SourceDescriptor.EntityClrType.GetProperty(linkData.SourcePropertyName).PropertyType;
}
return(changeData);
}
/// <summary>
/// Creates LinkChangeData which captures the state of the specified link descriptor data.
/// </summary>
/// <param name="linkData">The link descriptor data.</param>
/// <returns>Link change data.</returns>
public static LinkChangeData Create(LinkDescriptorData linkData)
{
ExceptionUtilities.CheckArgumentNotNull(linkData, "linkData");
LinkChangeData changeData = new LinkChangeData(linkData);
var isEnumerable = linkData.SourceDescriptor.EntityClrType.GetProperty(linkData.SourcePropertyName).PropertyType.GetInterfaces().Any(t => t.Name == "IEnumerable");
changeData.IsReference = !isEnumerable;
if (linkData.TargetDescriptor != null)
{
changeData.ClrTypeForRequery = linkData.TargetDescriptor.EntityClrType;
}
else
{
ExceptionUtilities.Assert(changeData.IsReference, "TargetDescriptor can not be null for the link descriptor representing collection.");
changeData.ClrTypeForRequery = linkData.SourceDescriptor.EntityClrType.GetProperty(linkData.SourcePropertyName).PropertyType;
}
return changeData;
}
