internal static object GetValue(PgTableViewFilterM item)
{
switch (item.FieldType)
{
case AbsM.EFieldType.Integer:
{
return(ExtraFunctions.Converts.To <int?>(item.Value));
}
case AbsM.EFieldType.Text:
{
return(ExtraFunctions.Converts.To <string>(item.Value));
}
case AbsM.EFieldType.Date:
case AbsM.EFieldType.DateTime:
{
return(ExtraFunctions.Converts.To <DateTime?>(item.Value));
}
case AbsM.EFieldType.Real:
{
return(ExtraFunctions.Converts.To <double?>(item.Value));
}
default:
{
return(null);
}
}
}
private static Params GetWhereParams(PgTVM.PgTableViewFilterM filter, int n)
{
string name = (filter.Field.Table == null) ? "all" : filter.Field.Name;
var par = new Params(
string.Format(":{0}{1}", name, n),
PgTVM.PgTableViewFilterM.GetValue(filter),
Pg_M.PgFieldM.GetDbType(filter.FieldType)
);
return(par);
}
/// <summary>
/// Конструктор менеджера фильтров.
/// </summary>
/// <param name="source">Источник, в котором хранится экземпляр класса</param>
/// <param name="fixedFilterPattern">Паттерн фиксированного фильтра</param>
public PgTableViewFilterVM(PgTableViewVM source, FilterRelationModel fixedFilterPattern)
{
this._source = source;
GetFilterField();
GetFilterRelation();
GetFilterOperation();
_dynamicFilter = new PgTVM.PgTableViewFiltersM(this);
if (fixedFilterPattern != null)
{
_fixedFilter = new PgTVM.PgTableViewFilterM(this);
SetFilterFromPattern(_fixedFilter, fixedFilterPattern);
}
_filters = new ObservableCollection <PgTVM.PgTableViewFiltersM>(new[] { _dynamicFilter });
ReloadFiltersFromSqLite();
}
public static bool FilterHasError(PgTVM.IPgTableViewFilterM iFilter)
{
if (iFilter is PgTVM.PgTableViewFilterM)
{
PgTVM.PgTableViewFilterM filter = iFilter as PgTVM.PgTableViewFilterM;
return(filter.HasError);
}
else if (iFilter is PgTVM.PgTableViewFiltersM)
{
PgTVM.PgTableViewFiltersM container = iFilter as PgTVM.PgTableViewFiltersM;
bool result = false;
foreach (PgTVM.IPgTableViewFilterM innerIFilter in container.Container)
{
result |= FilterHasError(innerIFilter);
}
return(result);
}
else
{
return(false);
}
}
/// <summary>
/// Устанавливает активный фильтр из FilterRelationModel
/// </summary>
/// <param name="iFilter"></param>
/// <param name="pattern"></param>
public void SetFilterFromPattern(PgTVM.IPgTableViewFilterM iFilter, FilterRelationModel pattern)
{
switch (pattern.Type)
{
case TypeRelation.AND:
case TypeRelation.OR:
{
PgTVM.PgTableViewFiltersM container = iFilter as PgTVM.PgTableViewFiltersM;
container.Container.Clear();
container.TRelation = pattern.Type;
foreach (FilterRelationModel relM in pattern.Arguments)
{
if (relM.Type == TypeRelation.ELEMENT)
{
PgTVM.PgTableViewFilterM innerelement = new PgTVM.PgTableViewFilterM(container, false);
container.Container.Add(innerelement);
SetFilterFromPattern(innerelement, relM);
}
else
{
PgTVM.PgTableViewFiltersM innercontainer = new PgTVM.PgTableViewFiltersM(container, false);
container.Container.Add(innercontainer);
SetFilterFromPattern(innercontainer, relM);
}
}
break;
}
case TypeRelation.ELEMENT:
{
PgTVM.PgTableViewFilterM element = (PgTVM.PgTableViewFilterM)iFilter;
element.Field = element.Source.FindField(pattern.Element.Column);
element.TOperation = pattern.Element.Type;
element.Value = pattern.Element.Value;
break;
}
}
}
private static string GetWhereFilter(PgTVM.PgTableViewFilterM filter, Params paParams)
{
string format = "lower(\"{0}\") LIKE lower({1})";
if (filter.FieldType == AbsM.EFieldType.Text)
{
switch (filter.TOperation)
{
case TypeOperation.Empty:
format = "\"{0}\" is NULL";
break;
case TypeOperation.NotEmpty:
format = "\"{0}\" is NOT NULL";
break;
case TypeOperation.Equal:
format = "lower(\"{0}\") LIKE lower({1})";
break;
case TypeOperation.NotEqual:
format = "lower(\"{0}\") NOT LIKE lower({1})";
break;
case TypeOperation.Contains:
paParams.value = string.Format("%{0}%", paParams.value);
break;
case TypeOperation.InEnd:
paParams.value = string.Format("%{0}", paParams.value);
break;
case TypeOperation.InBegin:
paParams.value = string.Format("{0}%", paParams.value);
break;
case TypeOperation.NotContains:
paParams.value = string.Format("%{0}%", paParams.value);
format = "lower(\"{0}\") NOT LIKE lower({1})";
break;
}
}
else
{
switch (filter.TOperation)
{
case TypeOperation.Empty:
format = "\"{0}\" is NULL";
break;
case TypeOperation.NotEmpty:
format = "\"{0}\" is NOT NULL";
break;
case TypeOperation.More:
format = "\"{0}\" > {1}";
break;
case TypeOperation.MoreOrEqual:
format = "\"{0}\" >= {1}";
break;
case TypeOperation.Less:
format = "\"{0}\" < {1}";
break;
case TypeOperation.LessOrEqual:
format = "\"{0}\" <= {1}";
break;
case TypeOperation.Equal:
format = "\"{0}\" = {1}";
break;
case TypeOperation.NotEqual:
format = "\"{0}\" <> {1}";
break;
}
}
if (filter.Field.Table == null)
{
// todo: (Dias) Для поле даты (и времени) использовать соответствующий параметр
var fields = filter.Source.Fields.Where(f => f.Table != null).Select(f => string.Format(format, f.Name + "\"::\"text", paParams.paramName)).ToArray();
var join = string.Join(" OR ", fields);
return(string.Format("({0})", join));
}
else
{
if (filter.UseOwnValue && ((Pg_M.PgFieldM)filter.Field).RefTable != null)
{
return(string.Format(format, "id!" + filter.Field.Name, paParams.paramName));
}
else
{
return(string.Format(format, filter.Field.Name, paParams.paramName));
}
}
}
