protected override XmlElement AssertXml()
{
if (!Exists)
{
return(null);
}
if (Xml != null)
{
return(Xml);
}
if (nodeList != null)
{
throw new InvalidOperationException("Multiple items were found when only one was expected.");
}
var ex = Exception;
if (ex != null)
{
throw ex;
}
throw AmlContext.NoItemsFoundException("?", default(Command));
}
/// <summary>
/// Return an enumerable of items. Throw an exception for any error including 'No items found'
/// </summary>
/// <returns></returns>
public IEnumerable <IReadOnlyItem> AssertItems()
{
var items = Items();
if (!items.Any())
{
throw AmlContext.NoItemsFoundException("?", default(Command));
}
return(items);
}
public void ToAml(XmlWriter writer, AmlWriterSettings settings)
{
if (Settings?.ModifyQuery == null)
{
QueryItem.ToAml(writer, settings);
}
else
{
var item = AmlContext.FromXml(QueryItem).AssertItem();
Settings.ModifyQuery.Invoke(item);
item.ToAml(writer, settings);
}
}
