/// <summary>
/// Ctor.
/// </summary>
/// <param name="selector">selector</param>
/// <param name="unit">unit</param>
public OutputLimitClause(
OutputLimitSelector selector,
OutputLimitUnit unit)
{
this.selector = selector;
this.unit = unit;
}
/// <summary>
/// Limit the output of the query.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="esperQuery">The esper query.</param>
/// <param name="selector">is the events to select</param>
/// <param name="frequencyVariable">is the variable providing the output limit frequency</param>
/// <returns>clause</returns>
public static EsperQuery <T> OutputLimit <T>(this EsperQuery <T> esperQuery, OutputLimitSelector selector, String frequencyVariable)
{
var parentObjectModel = esperQuery.ObjectModel;
var deriveObjectModel = parentObjectModel.ShallowCopy();
deriveObjectModel.OutputLimitClause = OutputLimitClause.Create(selector, frequencyVariable);
return(new EsperQuery <T>(esperQuery.ServiceProvider, deriveObjectModel));
}
/// <summary>
/// Limit the output of the query.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="esperQuery">The esper query.</param>
/// <param name="selector">The selector.</param>
/// <param name="timePeriodExpression">The time period expression.</param>
/// <returns></returns>
public static EsperQuery <T> OutputLimit <T>(this EsperQuery <T> esperQuery, OutputLimitSelector selector, TimePeriodExpression timePeriodExpression)
{
var parentObjectModel = esperQuery.ObjectModel;
var deriveObjectModel = parentObjectModel.ShallowCopy();
deriveObjectModel.OutputLimitClause = OutputLimitClause.Create(selector, timePeriodExpression);
return(new EsperQuery <T>(esperQuery.ServiceProvider, deriveObjectModel));
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="selector">is the events to select</param>
/// <param name="timePeriodExpression">the unit for the frequency</param>
public OutputLimitClause(
OutputLimitSelector selector,
TimePeriodExpression timePeriodExpression)
{
this.selector = selector;
this.timePeriodExpression = timePeriodExpression;
unit = OutputLimitUnit.TIME_PERIOD;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequency">a frequency to output at</param>
public OutputLimitClause(
OutputLimitSelector selector,
double? frequency)
{
this.selector = selector;
this.frequency = frequency;
unit = OutputLimitUnit.EVENTS;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="selector">is the events to select</param>
/// <param name="crontabAtParameters">the crontab schedule parameters</param>
public OutputLimitClause(
OutputLimitSelector selector,
Expression[] crontabAtParameters)
{
this.selector = selector;
this.crontabAtParameters = crontabAtParameters;
unit = OutputLimitUnit.CRONTAB_EXPRESSION;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequencyVariable">is the variable name providing output rate frequency values</param>
public OutputLimitClause(
OutputLimitSelector selector,
string frequencyVariable)
{
this.selector = selector;
this.frequencyVariable = frequencyVariable;
unit = OutputLimitUnit.EVENTS;
}
/// <summary>Ctor. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="whenExpression">the bool expression to evaluate to control output</param>
/// <param name="thenAssignments">the variable assignments, optional or an empty list</param>
public OutputLimitClause(
OutputLimitSelector selector,
Expression whenExpression,
IList <Assignment> thenAssignments)
{
Selector = selector;
WhenExpression = whenExpression;
ThenAssignments = thenAssignments;
Unit = OutputLimitUnit.WHEN_EXPRESSION;
}
/// <summary>Ctor. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="unit">the unit of selection</param>
/// <param name="afterTimePeriod">after-keyword time period</param>
/// <param name="afterNumberOfEvents">after-keyword number of events</param>
public OutputLimitClause(
OutputLimitSelector selector,
OutputLimitUnit unit,
TimePeriodExpression afterTimePeriod,
int?afterNumberOfEvents)
{
Selector = selector;
Unit = unit;
AfterTimePeriodExpression = afterTimePeriod;
AfterNumberOfEvents = afterNumberOfEvents;
}
/// <summary>Ctor. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequency">a frequency to output at</param>
/// <param name="unit">the unit for the frequency</param>
/// <param name="frequencyVariable">is the variable name providing output rate frequency values</param>
public OutputLimitClause(
OutputLimitSelector selector,
Double?frequency,
String frequencyVariable,
OutputLimitUnit unit)
{
Selector = selector;
Frequency = frequency;
FrequencyVariable = frequencyVariable;
Unit = unit;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequency">a frequency to output at</param>
/// <param name="unit">the unit for the frequency</param>
/// <param name="frequencyVariable">is the variable name providing output rate frequency values</param>
public OutputLimitClause(
OutputLimitSelector selector,
double? frequency,
string frequencyVariable,
OutputLimitUnit unit)
{
this.selector = selector;
this.frequency = frequency;
this.frequencyVariable = frequencyVariable;
this.unit = unit;
}
public static string GetText(this OutputLimitSelector @enum)
{
switch (@enum)
{
case OutputLimitSelector.FIRST:
return "first";
case OutputLimitSelector.LAST:
return "last";
case OutputLimitSelector.ALL:
return "all";
case OutputLimitSelector.SNAPSHOT:
return "snapshot";
case OutputLimitSelector.DEFAULT:
return "default";
}
throw new ArgumentException();
}
/// <summary>Creates an output limit clause. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="timePeriodExpression">a frequency to output at</param>
/// <returns>clause</returns>
public static OutputLimitClause Create(OutputLimitSelector selector, TimePeriodExpression timePeriodExpression)
{
return(new OutputLimitClause(selector, timePeriodExpression));
}
/// <summary>Ctor. </summary>
/// <param name="selector">selector</param>
/// <param name="unit">unit</param>
public OutputLimitClause(OutputLimitSelector selector, OutputLimitUnit unit)
{
Selector = selector;
Unit = unit;
}
/// <summary>Ctor. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequencyVariable">is the variable name providing output rate frequency values</param>
public OutputLimitClause(OutputLimitSelector selector, String frequencyVariable)
{
Selector = selector;
FrequencyVariable = frequencyVariable;
Unit = OutputLimitUnit.EVENTS;
}
/// <summary>Creates an output limit clause. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequency">a frequency to output at</param>
/// <returns>clause</returns>
public static OutputLimitClause Create(OutputLimitSelector selector, double frequency)
{
return(new OutputLimitClause(selector, frequency));
}
/// <summary>Creates an output limit clause. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequencyVariable">is the variable providing the output limit frequency</param>
/// <returns>clause</returns>
public static OutputLimitClause Create(OutputLimitSelector selector, String frequencyVariable)
{
return(new OutputLimitClause(selector, frequencyVariable));
}
/// <summary>Ctor. </summary>
/// <param name="selector">is the events to select</param>
/// <param name="frequency">a frequency to output at</param>
public OutputLimitClause(OutputLimitSelector selector, Double frequency)
{
Selector = selector;
Frequency = frequency;
Unit = OutputLimitUnit.EVENTS;
}
