private Expression<Func<AuditTrailEntry, bool>> MakeSubjectNameFilterExpression(AuditTrailFilterLogic filterLogic, List<AuditTrailTextFilterParameter> filterParameters)
{
Expression<Func<AuditTrailEntry, bool>> textFilter = PredicateExtensions.PredicateExtensions.Begin<AuditTrailEntry>(true);
if (filterParameters.Count > 0)
{
if (filterLogic == AuditTrailFilterLogic.AND)
{
foreach (AuditTrailTextFilterParameter param in filterParameters)
{
textFilter = textFilter.And(MakeSubjectNameFilterParameterExpression(param));
}
}
if (filterLogic == AuditTrailFilterLogic.OR)
{
textFilter = PredicateExtensions.PredicateExtensions.Begin<AuditTrailEntry>(false);
foreach (AuditTrailTextFilterParameter param in filterParameters)
{
textFilter = textFilter.Or(MakeSubjectNameFilterParameterExpression(param));
}
}
}
return textFilter;
}
private Expression <Func <AuditTrailEntry, bool> > MakeTimestampFilterExpression(AuditTrailFilterLogic filterLogic, List <AuditTrailDateFilterParameter> filterParameters)
{
Expression <Func <AuditTrailEntry, bool> > dateFilter = PredicateExtensions.PredicateExtensions.Begin <AuditTrailEntry>(true);
if (filterParameters.Count > 0)
{
if (filterLogic == AuditTrailFilterLogic.AND)
{
foreach (AuditTrailDateFilterParameter param in filterParameters)
{
dateFilter = dateFilter.And(MakeTimestampFilterParameterExpression(param));
}
}
if (filterLogic == AuditTrailFilterLogic.OR)
{
dateFilter = PredicateExtensions.PredicateExtensions.Begin <AuditTrailEntry>(false);
foreach (AuditTrailDateFilterParameter param in filterParameters)
{
dateFilter = dateFilter.Or(MakeTimestampFilterParameterExpression(param));
}
}
}
return(dateFilter);
}
