IInstantFeedbackSource <TProjection> IUnitOfWorkFactory <TUnitOfWork> .CreateInstantFeedbackSource <TEntity, TProjection, TPrimaryKey>(
Func <TUnitOfWork, IRepository <TEntity, TPrimaryKey> > getRepositoryFunc,
Func <IRepositoryQuery <TEntity>, IQueryable <TProjection> > projection)
{
var threadSafeProperties = new TypeInfoProxied(TypeDescriptor.GetProperties(typeof(TProjection)), null).UIDescriptors;
if (projection == null)
{
projection = x => x as IQueryable <TProjection>;
}
var context = getContext();
context.MergeOption = MergeOption.NoTracking;
var source = new WcfInstantFeedbackDataSource
{
UseExtendedDataQuery = GetDbRepositoryQuery(getRepositoryFunc, projection).UseExtendedDataQuery,
DataServiceContext = context
};
var keyProperties = ExpressionHelper.GetKeyProperties(getRepositoryFunc(getUnitOfWork()).GetPrimaryKeyExpression);
var keyExpression = keyProperties.Select(p => p.Name).Aggregate((l, r) => l + ";" + r);
source.GetSource += (s, e) =>
{
e.Query = GetDbRepositoryQuery(getRepositoryFunc, projection).Query;
e.KeyExpression = keyExpression;
e.Handled = true;
};
return(new InstantFeedbackSource <TProjection>(source, threadSafeProperties));
}
public MainWindow()
{
Source = new WcfInstantFeedbackDataSource();
Source.GetSource += ((d, e) => {
e.KeyExpression = "Oid";
e.Query = new SCEntities(new Uri(@"http://demos.devexpress.com/Services/WcfLinqSC/WcfSCService.svc")).SCIssuesDemo;
e.Handled = true;
});
DataContext = this;
InitializeComponent();
}
public InstantFeedbackSource(WcfInstantFeedbackDataSource source, PropertyDescriptorCollection threadSafeProperties)
{
this.source = source;
this.threadSafeProperties = threadSafeProperties;
}
