/// <summary>
/// Executes the given function.
/// </summary>
/// <typeparam name="C">Type of the object context.</typeparam>
/// <typeparam name="T">Type of the object result.</typeparam>
/// <param name="exec">The exec.</param>
/// <param name="evaluateResult">The evaluate result.</param>
/// <param name="onFailure">The on failure.</param>
public static void ExecFunc <C, T>(C dataContext,
Func <C, T> exec,
Action <T> evaluateResult,
Action <ExecFuncFailureResult> onFailure)
where C : DbContext
{
ModuleProc PROC = new ModuleProc("DataContextHelper", "ExecFunc<T>");
ExecFuncFailureResult failureResult = ExecFuncFailureResult.None;
try
{
using (C context = dataContext)
{
if (context != null)
{
try
{
T result = exec(context);
if (evaluateResult != null)
{
evaluateResult(result);
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
failureResult = ExecFuncFailureResult.UnableToExecute;
}
}
else
{
failureResult = ExecFuncFailureResult.DBConnectionFailure;
}
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
}
finally
{
if (failureResult != ExecFuncFailureResult.None &&
onFailure != null)
{
onFailure(failureResult);
}
}
}
/// <summary>
/// Executes the given function.
/// </summary>
/// <typeparam name="C">Type of the object context.</typeparam>
/// <typeparam name="T">Type of the object result.</typeparam>
/// <param name="exec">The exec.</param>
/// <param name="evaluateResult">The evaluate result.</param>
/// <param name="onFailure">The on failure.</param>
public static void ExecFunc <C, T>(C dataContext,
Func <C, ObjectResult <T> > exec,
Func <T, long, bool> evaluateResult,
Action <ExecFuncFailureResult> onFailure)
where C : DbContext
{
ModuleProc PROC = new ModuleProc("DataContextHelper", "ExecFunc<T>");
ExecFuncFailureResult failureResult = ExecFuncFailureResult.None;
try
{
long index = 0;
bool hasRows = false;
using (C context = dataContext)
{
if (context != null)
{
try
{
ObjectResult <T> resultItems = exec(context);
if (resultItems != null)
{
foreach (T resultItem in resultItems)
{
hasRows |= true;
if (evaluateResult != null)
{
try
{
bool isOK = evaluateResult(resultItem, index);
if (!isOK)
{
break;
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
}
}
index++;
}
if (!hasRows)
{
failureResult = ExecFuncFailureResult.ObjectResultsZeroCount;
}
}
else
{
failureResult = ExecFuncFailureResult.ObjectResultsEmpty;
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
failureResult = ExecFuncFailureResult.UnableToExecute;
}
}
else
{
failureResult = ExecFuncFailureResult.DBConnectionFailure;
}
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
}
finally
{
if (failureResult != ExecFuncFailureResult.None &&
onFailure != null)
{
onFailure(failureResult);
}
}
}
/// <summary>
/// Executes the given function.
/// </summary>
/// <typeparam name="C">Type of the object context.</typeparam>
/// <typeparam name="T">Type of the object result.</typeparam>
/// <param name="exec">The exec.</param>
/// <param name="evaluateResult">The evaluate result.</param>
/// <param name="onFailure">The on failure.</param>
public static void ExecFuncEnumerable <C, T>(C dataContext,
Func <C, ObjectResult <T> > exec,
Action <IEnumerable <T> > onSuccess,
Action <ExecFuncFailureResult> onFailure)
where C : DbContext
{
ModuleProc PROC = new ModuleProc("DataContextHelper", "ExecFunc<T>");
ObjectResult <T> result = null;
ExecFuncFailureResult failureResult = ExecFuncFailureResult.None;
try
{
using (C context = dataContext)
{
if (context != null)
{
try
{
result = exec(context);
if (result != null &&
onSuccess != null)
{
try
{
onSuccess(result);
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
}
}
else
{
failureResult = ExecFuncFailureResult.ObjectResultsEmpty;
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
failureResult = ExecFuncFailureResult.UnableToExecute;
}
}
else
{
failureResult = ExecFuncFailureResult.DBConnectionFailure;
}
}
}
catch (Exception ex)
{
Log.Exception(PROC, ex);
}
finally
{
if (failureResult != ExecFuncFailureResult.None &&
onFailure != null)
{
onFailure(failureResult);
}
}
}
