/// <summary>
/// StartTask a new <c>task</c>.
/// </summary>
/// <param name="task">The <c>task</c>.</param>
/// <returns>The task's identifier.</returns>
public Int64 StartTask(Expression <Action> task) //TODO: (task, queue)
{
if (taskManagerState == TaskManagerState.ServerOnly)
{
throw new InvalidOperationException("taskManagerState == TaskManagerState.ServerOnly");
}
logger.WriteDebug("Preparing a new task... Getting a default queue...");
QueueModel defaultQueue = queueManager.GetDefaultQueue();
logger.WriteTrace("The default queue ({0}) has been got. Converting expression into the task model...");
ActivationData activationData = expressionConverter.Convert(task);
ScheduleInformation schedule = new ScheduleInformation(maxRerunCount);
TaskModel taskModel = new TaskModel(defaultQueue.Id, activationData, schedule);
logger.WriteTrace("The expression has been converted. Inserting the task into the database...");
Int64 taskId = taskDataContext.InsertTask(taskModel);
logger.WriteDebug("The task has been inserted. Task identifier = {0}", taskId);
return(taskId);
}
/// <summary>
///
/// </summary>
/// <param name="converter"></param>
/// <param name="method"></param>
/// <returns></returns>
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var index = method.SkipMethodChain(0);
var args = method.Arguments.Skip(index).Select(e => converter.Convert(e)).ToArray();
var name = string.IsNullOrEmpty(Name) ? method.Method.Name.ToUpper() : Name;
var hArgs = new HText(args) { Separator = Separator }.ConcatToBack(")");
return new HText(Line(name, "("), hArgs) { IsFunctional = true };
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var v = new VText();
var overMethod = method;
v.Add(overMethod.Method.Name.ToUpper() + "(");
v.AddRange(1, overMethod.Arguments.Skip(1).
Where(e => !(e is ConstantExpression)). //Skip null.
Select(e => converter.Convert(e)).ToArray());
return v.ConcatToBack(")");
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var arg = method.Arguments[method.SkipMethodChain(0)];
var array = arg as NewArrayExpression;
var orderBy = new VText();
orderBy.Add("ORDER BY");
var sort = new VText() { Separator = "," };
sort.AddRange(1, array.Expressions.Select(e => converter.Convert(e)).ToList());
orderBy.Add(sort);
return orderBy;
}
/// <summary>
/// Start new <c>task</c>.
/// </summary>
/// <param name="queueName">The queue's name.</param>
/// <param name="task">The <see cref="Expression"/> instance.</param>
/// <param name="scheduleStrategy">Schedule</param>
/// <returns>The task's identifier.</returns>
public int StartTask(string queueName, Expression <Action> task, IScheduleStrategy scheduleStrategy)
{
using (IUnitOfWork unitOfWork = unitOfWorkFactory.CreateUnitOfWork(contextSettings))
{
ActivationData activationData = expressionConverter.Convert(task);
string[] args = expressionConverter.SerializeArguments(activationData.Arguments);
TaskInfo entity = new TaskInfo
{
QueueName = queueName,
InstanceType = jsonConverter.ConvertToJson(activationData.InstanceType),
Method = activationData.Method.Name,
ParametersTypes = jsonConverter.ConvertToJson(activationData.ArgumentTypes),
Arguments = jsonConverter.ConvertToJson(args),
TaskState = TaskStates.New,
ExecuteAt = scheduleStrategy.GetNextExecutionTime(DateTime.UtcNow, TaskStates.New),
RepeatCrashCount = 3 //TODO: Settings
};
switch (scheduleStrategy.ScheduleType)
{
case ScheduleType.Immediately:
case ScheduleType.ExecuteAt:
{
entity.ScheduleInfoId = -1;
break;
}
default:
{
ScheduleInfo scheduleInfo = new ScheduleInfo
{
ScheduleType = scheduleStrategy.ScheduleType,
ScheduleData = jsonConverter.ConvertToJson(scheduleStrategy),
ScheduleDataType = jsonConverter.ConvertToJson(scheduleStrategy.GetType())
};
unitOfWork.Insert(scheduleInfo);
entity.ScheduleInfoId = scheduleInfo.Id;
break;
}
}
unitOfWork.Insert(entity);
unitOfWork.Commit();
return(entity.Id);
}
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var partitionBy = new VText();
partitionBy.Add("PARTITION BY");
var elements = new VText() { Indent = 1, Separator = "," };
var array = method.Arguments[0] as NewArrayExpression;
foreach (var e in array.Expressions.Select(e => converter.Convert(e)))
{
elements.Add(e);
}
partitionBy.Add(elements);
return partitionBy;
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
=> LineSpace(converter.Convert(method.Arguments[0]), method.Method.Name.ToUpper());
public override ExpressionElement Convert(IExpressionConverter converter, NewExpression exp)
{
var obj = converter.ToObject(exp.Arguments[0]);
return (bool)obj ? converter.Convert(exp.Arguments[1]) : (ExpressionElement)string.Empty;
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var args = method.Arguments.Select(e => converter.Convert(e)).ToArray();
return Clause(LineSpace(args[0], "BETWEEN"), args[1], "AND", args[2]);
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var args = method.Arguments.Select(e => converter.Convert(e)).ToArray();
return new DisableBracketsText(Func("ALL", args[0]));
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var text = (string)converter.ToObject(method.Arguments[0]);
var array = method.Arguments[1] as NewArrayExpression;
return new StringFormatText(text, array.Expressions.Select(e => converter.Convert(e)).ToArray());
}
public override ExpressionElement Convert(IExpressionConverter converter, MethodCallExpression method)
{
var args = method.Arguments.Select(e => converter.Convert(e)).ToArray();
return FuncSpace("CAST", args[0], "AS", args[1].Customize(new CustomizeParameterToObject()));
}
public override ExpressionElement Convert(IExpressionConverter converter, NewExpression exp)
{
ExpressionElement arg1 = converter.Convert(exp.Arguments[0]).Customize(new CustomizeColumnOnly());
return new HText(arg1, "=", converter.Convert(exp.Arguments[1])) { Separator = " " };
}
public virtual IEnumerable <Model> FindAll <TKey>(Expression <Func <Model, bool> > where = null, Expression <Func <Model, TKey> > orderBy = null, int skip = 0, int?take = null)
{
// Convert the expressions so we can use them with the database.
Expression <Func <DbModel, bool> > dbWhere = null;
if (where != null)
{
dbWhere = _expressionConverter.Convert <Func <Model, bool>, Func <DbModel, bool> >(where);
}
Expression <Func <DbModel, TKey> > dbOrderBy = null;
if (orderBy != null)
{
dbOrderBy = _expressionConverter.Convert <Func <Model, TKey>, Func <DbModel, TKey> >(orderBy);
}
// Find the data set to work with.
IQueryable <DbModel> dbSet = _context.Set <DbModel>();
// Apply the where clause.
if (dbWhere != null)
{
dbSet = dbSet.Where(dbWhere);
}
// Apply order by clause.
if (dbOrderBy != null)
{
dbSet = dbSet.OrderBy(dbOrderBy);
}
// Apply skip
if (skip > 0)
{
dbSet = dbSet.Skip(skip);
}
// Take only the number of results requested.
if (take.HasValue)
{
dbSet = dbSet.Take(take.Value);
}
// Read the data.
var dbResults = dbSet.AsEnumerable();
// Convert back to the model format.
var ret = dbResults.Select(dbModel =>
{
Model model;
if (typeof(Model) == typeof(DbModel))
{
model = (Model)(object)dbModel;
}
else
{
model = _modelConverter.CopyProperties(dbModel, new Model());
}
foreach (var eventx in _events)
{
eventx.Found(model);
}
return(model);
}).ToList();
return(ret);
}
