internal bool Exists(string modelName, string guid)
{
bool exists = true;
try
{
using (MobeelizerDatabaseContext dataContext = new MobeelizerDatabaseContext(this.ConnectionString))
{
var table = from MobeelizerWp7Model m in dataContext.GetTable(models[modelName].Type) where m.Guid == guid select m;
table.Single();
}
}
catch (SystemException)
{
exists = false;
}
return(exists);
}
internal MobeelizerOperationError UpdateEntitiesFromSync(IEnumerable <MobeelizerJsonEntity> entities, bool isAllSynchronization)
{
MobeelizerOperationError transactionErrors = null;
using (MobeelizerDatabaseContext dataContext = new MobeelizerDatabaseContext(this.ConnectionString))
{
if (isAllSynchronization)
{
foreach (var model in models.Values)
{
var table = dataContext.GetTable(model.Type);
table.DeleteAllOnSubmit(from MobeelizerWp7Model record in table select record);
}
dataContext.ModelMetadata.DeleteAllOnSubmit(from m in dataContext.ModelMetadata select m);
// TODO: check it
//dataContext.Files.DeleteAllOnSubmit(from f in dataContext.Files select f);
dataContext.SubmitChanges();
}
foreach (MobeelizerJsonEntity entity in entities)
{
transactionErrors = models[entity.Model].UpdateFromSync(entity, dataContext);
if (transactionErrors != null)
{
break;
}
}
if (transactionErrors == null)
{
dataContext.SubmitChanges();
}
}
return(transactionErrors);
}