private string GetOperandError <T>(string operand)
{
var dataSchema = new DataSchema();
var rootColumn = ColumnDescriptor.RootColumn(dataSchema, typeof(DataRowWithProperty <T>));
var column = rootColumn.ResolveChild("Property");
var stringWriter = new StringWriter();
using (var xmlTextWriter = new XmlTextWriter(stringWriter))
{
xmlTextWriter.WriteStartElement("filter");
xmlTextWriter.WriteAttributeString("opname", FilterOperations.OP_EQUALS.OpName);
xmlTextWriter.WriteAttributeString("operand", operand);
xmlTextWriter.WriteEndElement();
}
var xmlReader = new XmlTextReader(new StringReader(stringWriter.ToString()));
while (!xmlReader.IsStartElement())
{
xmlReader.Read();
}
FilterPredicate filterPredicate = FilterPredicate.ReadXml(xmlReader);
FilterInfo filterInfo = new FilterInfo(new FilterSpec(column.PropertyPath, filterPredicate), column, rootColumn);
return(filterInfo.Error);
}
public static RowFilter ReadXml(XmlReader reader)
{
var rowFilter = new RowFilter();
rowFilter.Text = reader.GetAttribute("text");
if (!string.IsNullOrEmpty(rowFilter.Text))
{
rowFilter.CaseSensitive = reader.GetAttribute("caseSensitive") != null;
}
if (reader.IsEmptyElement)
{
reader.Read();
return(rowFilter);
}
reader.Read();
var columnFilters = new List <ColumnFilter>();
var columnSorts = new List <ColumnSort>();
while (true)
{
if (reader.IsStartElement("columnFilter"))
{
var columnFilter = new ColumnFilter(new ColumnId(reader.GetAttribute("column")), FilterPredicate.ReadXml(reader));
if (reader.IsEmptyElement)
{
reader.Read();
}
else
{
reader.Read();
reader.ReadEndElement();
}
columnFilters.Add(columnFilter);
}
else if (reader.IsStartElement("columnSort"))
{
var direction = Equals(SORT_DESC, reader.GetAttribute("direction"))
? ListSortDirection.Descending
: ListSortDirection.Ascending;
var columnSort = new ColumnSort(new ColumnId(reader.GetAttribute("column")), direction);
columnSorts.Add(columnSort);
if (reader.IsEmptyElement)
{
reader.Read();
}
else
{
reader.Read();
reader.ReadEndElement();
}
}
else if (reader.NodeType == XmlNodeType.EndElement)
{
reader.ReadEndElement();
break;
}
else
{
reader.Read();
}
}
rowFilter.ColumnFilters = ImmutableList.ValueOf(columnFilters);
rowFilter.ColumnSorts = ImmutableList.ValueOf(columnSorts);
return(rowFilter);
}