/// <summary>
/// selector: Name,Age,Location
/// orderBy:
/// - ascending : +Name,+Age
/// - descending : -Name,-Age
/// - mixed (OrderBy, ThenBy) : +Name,-Age
/// query: &(Name=Roy)(Age=18)
/// </summary>
/// <param name="source"></param>
/// <param name="selector"></param>
/// <param name="filter"></param>
/// <param name="orderBy"></param>
/// <returns></returns>
public static IQueryable QueryDynamic(this IQueryable source, string selector, string filter,
string orderBy = null, int?skip = null, int?take = null)
{
var outputType = source.ElementType;
if (selector != null)
{
var selectorExpression = SelectorBuilder.Build(source.ElementType, selector, out outputType);
if (selectorExpression != null)
{
source = source.Provider.CreateQuery(Expression.Call(typeof(Queryable), "Select",
new[] { source.ElementType, outputType },
source.Expression, selectorExpression));
}
}
if (filter != null)
{
var queryExpression = FilterParser.Parse(filter).Build(outputType);
if (queryExpression != null)
{
source = source.Provider.CreateQuery(Expression.Call(typeof(Queryable), "Where",
new[] { outputType },
source.Expression, queryExpression));
}
}
if (orderBy != null)
{
var isFirstOrder = true;
foreach (var orderByField in orderBy.Split(",").Where(of => of.Length > 1))
{
var memberName = orderByField[1..];
/// <inheritdoc/>
protected override void Make(AppCommandRequest commandRequest)
{
string whereString = "where";
int whereIndex = commandRequest.Parameters.IndexOf(whereString, StringComparison.CurrentCultureIgnoreCase);
string selectSection;
IEnumerable <FileCabinetRecord> list;
if (whereIndex < 0)
{
list = this.IsCached(commandRequest.Parameters, this.Service.GetRecords());
selectSection = commandRequest.Parameters;
}
else
{
string whereSection = commandRequest.Parameters.Substring(whereIndex + whereString.Length + 1);
selectSection = commandRequest.Parameters.Substring(0, whereIndex);
var filter = Parser.Parser.Parse(whereSection);
list = this.IsCached(commandRequest.Parameters, this.Service.GetRecords().Where(x => filter.Execute(x)));
}
IEnumerable <string> fields = string.IsNullOrWhiteSpace(selectSection)
? SelectorBuilder.GetFieldsNames()
: selectSection.Split(',').Select(x => x.Trim(' '));
Printer printer = new (fields);
printer.Print(list);
}
private void ProcessGroup(int vkGroupId = 0)
{
string groupSelector = string.Empty;
try
{
SelectorBuilder selectorBuilder = new SelectorBuilder();
groupSelector = selectorBuilder.BuildSelector(vkGroupId);
DataFeed firstCommand = this.ProcessFeedItem(groupSelector);
if (firstCommand == null || firstCommand.IsSequenceTerminator)
{
this.log.InfoFormat("No items for selector = {0} found in the queue. Processing stopped.", groupSelector);
return;
}
if (vkGroupId == 0)
{
vkGroupId = firstCommand.VkGroupId;
}
groupSelector = selectorBuilder.BuildSelector(vkGroupId, firstCommand.Type.ToString());
DataFeed processFeedItem = this.ProcessFeedItem(groupSelector, true);
if (processFeedItem == null)
{
this.log.InfoFormat("No items for selector = {0} found in the queue. Processing stopped.", groupSelector);
}
}
catch (Exception exc)
{
exc.Data.Add("Selector", groupSelector);
throw;
}
}
public GateController NewDut()
{
_selector = SelectorBuilder.Build();
_pwmController = MockPwmController;
_gateStates = GateStatesBuilder.Build();
return(new GateController(_selector, _pwmController, _gateStates.Object));
}
public QuestionPresenter(IQuestionView view)
: base(view)
{
_view = view;
if (_builder == null)
{
_builder = new SelectorBuilder();
}
}
private void DefaultSelector <TCompatibleRequest>(
CrudRequestConfig <TCompatibleRequest> config)
{
var requestKey = config.GetRequestKey();
var entityKey = config.GetKeyFor <TEntity>();
if (requestKey != null && entityKey != null)
{
var builder = new SelectorBuilder <TRequest, TEntity>();
config.SetEntitySelector <TEntity>(builder.Single(requestKey, entityKey));
}
}
private void DefaultSelector <TCompatibleRequest>(
CrudRequestConfig <TCompatibleRequest> config)
{
var itemKey = config.GetRequestKey();
var entityKey = config.GetKeyFor <TEntity>();
if (itemKey != null && entityKey != null)
{
var builder = new SelectorBuilder <TRequest, TEntity>();
config.SetEntitySelector <TEntity>(builder.Collection(_getRequestItems, entityKey, itemKey));
}
}
private static ExpressionElement GetField(List <string> words, ref int index)
{
if (!SelectorBuilder.HasField(words[index]))
{
throw new ArgumentException($"Field name '{words[index]}' is not correct.");
}
var result = new ExpressionElement(words[index]);
index++;
return(result);
}
public GateControllerFixture WithSelectedGate(int gateNr)
{
SelectorBuilder.WithSelected(gateNr);
return(this);
}
