void IColumnMapping.ProcessMapping(int column, int rowNumber, ICdlRecord record, ICdlValueWriter writer, IShellContext context)
{
if (_value == null)
{
_value = new CdlValueHolder();
}
if (Expression != null && Value != null)
{
throw new Exception("DBSH-00004 MapValue: Both Expression and Value is set");
}
var childContext = context.CreateChildContext();
if (Value != null)
{
CreateColumnValues(record, childContext);
string value = childContext.Replace(Value);
_value.ReadFrom(value);
_value.WriteTo(writer);
}
if (Expression != null)
{
CreateColumnValues(record, childContext);
object value = childContext.Evaluate(Expression);
_value.ReadFrom(value);
_value.WriteTo(writer);
}
if (Expression == null && Value == null)
{
_value.SetNull();
_value.WriteTo(writer);
}
}
public void AdaptValue(ICdlValueReader reader, DbTypeBase type, ICdlValueWriter writer, ICdlValueConvertor converter)
{
if (reader.GetFieldType() == TypeStorage.Null)
{
m_holder.SetNull();
}
else
{
ConvertNotNullValue(reader, type, m_holder, converter);
ApplyTypeRestrictions(m_holder, type);
}
writer.ReadFrom(m_holder);
}
