/// <summary>
/// Update database with entity and filter
/// Ex: Update(obj, ob=>ob.objId == id)
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="entity"></param>
/// <param name="filter"></param>
/// <returns></returns>
public Boolean Update <T>(ObjectContext context, T entity, Expression <Func <T, bool> > filter, out OperationResult operationResult) where T : class, new()
{
try
{
if (filter == null)
{
operationResult = new OperationResult {
Type = OperationResult.ResultType.Warning
};
return(false);
}
using (context)
{
operationResult = new OperationResult {
Type = OperationResult.ResultType.Success
};
T entityFromDb = context.CreateObjectSet <T>().Where(filter).Single();
if (entityFromDb == null)
{
throw new NullReferenceException();
}
DataUtility.CloneObject <T>(entity, ref entityFromDb);
context.SaveChanges();
return(true);
}
}
catch (Exception ex)
{
operationResult = new OperationResult {
Type = OperationResult.ResultType.Failure, Message = ex.StackTrace
};
return(false);
}
}