public AgentInstanceViewFactoryChainContext(AgentInstanceContext agentInstanceContext, bool isRemoveStream, Object previousNodeGetter, ViewUpdatedCollection priorViewUpdatedCollection)
{
_agentInstanceContext = agentInstanceContext;
_isRemoveStream = isRemoveStream;
_previousNodeGetter = previousNodeGetter;
_priorViewUpdatedCollection = priorViewUpdatedCollection;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="timeBatchViewFactory">for copying this view in a group-by</param>
/// <param name="agentInstanceContext">The agent instance context.</param>
/// <param name="timeDeltaComputation">is the number of milliseconds to batch events for</param>
/// <param name="numberOfEvents">is the event count before the batch fires off</param>
/// <param name="forceOutput">is true if the batch should produce empty output if there is no value to output following time intervals</param>
/// <param name="isStartEager">is true for start-eager</param>
/// <param name="viewUpdatedCollection">is a collection that the view must Update when receiving events</param>
public TimeLengthBatchView(
TimeLengthBatchViewFactory timeBatchViewFactory,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
long numberOfEvents,
bool forceOutput,
bool isStartEager,
ViewUpdatedCollection viewUpdatedCollection)
{
_agentInstanceContext = agentInstanceContext;
_timeLengthBatchViewFactory = timeBatchViewFactory;
_timeDeltaComputation = timeDeltaComputation;
_numberOfEvents = numberOfEvents;
_isStartEager = isStartEager;
_viewUpdatedCollection = viewUpdatedCollection;
_isForceOutput = forceOutput;
_scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
// schedule the first callback
if (isStartEager)
{
ScheduleCallback(0);
}
agentInstanceContext.AddTerminationCallback(Stop);
}
public View MakeView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
ViewUpdatedCollection randomAccess =
agentInstanceViewFactoryContext.StatementContext.ViewServicePreviousFactory
.GetOptPreviousExprRandomAccess(agentInstanceViewFactoryContext);
return new KeepAllView(agentInstanceViewFactoryContext, this, randomAccess);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="timeBatchViewFactory">for copying this view in a group-by</param>
/// <param name="agentInstanceContext">The agent instance context.</param>
/// <param name="timeDeltaComputation">computes the number of milliseconds to batch events for</param>
/// <param name="referencePoint">is the reference point onto which to base intervals, or null ifthere is no such reference point supplied</param>
/// <param name="forceOutput">is true if the batch should produce empty output if there is no value to output following time intervals</param>
/// <param name="isStartEager">is true for start-eager</param>
/// <param name="viewUpdatedCollection">is a collection that the view must Update when receiving events</param>
public TimeBatchView(TimeBatchViewFactory timeBatchViewFactory,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
long?referencePoint,
bool forceOutput,
bool isStartEager,
ViewUpdatedCollection viewUpdatedCollection)
{
_agentInstanceContext = agentInstanceContext;
_timeBatchViewFactory = timeBatchViewFactory;
_timeDeltaComputation = timeDeltaComputation;
_initialReferencePoint = referencePoint;
_isStartEager = isStartEager;
_viewUpdatedCollection = viewUpdatedCollection;
_isForceOutput = forceOutput;
_scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
// schedule the first callback
if (isStartEager)
{
if (_currentReferencePoint == null)
{
_currentReferencePoint = agentInstanceContext.StatementContext.SchedulingService.Time;
}
ScheduleCallback();
_isCallbackScheduled = true;
}
agentInstanceContext.AddTerminationCallback(Stop);
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="agentInstanceViewFactoryContext">The agent instance view factory context.</param>
/// <param name="keepAllViewFactory">for copying this view in a group-by</param>
/// <param name="viewUpdatedCollection">for satisfying queries that select previous events in window order</param>
public KeepAllView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext, KeepAllViewFactory keepAllViewFactory, ViewUpdatedCollection viewUpdatedCollection)
{
AgentInstanceViewFactoryContext = agentInstanceViewFactoryContext;
_keepAllViewFactory = keepAllViewFactory;
_indexedEvents = new LinkedHashSet <EventBean>();
_viewUpdatedCollection = viewUpdatedCollection;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="viewUpdatedCollection">is a collection that the view must update when receiving events</param>
/// <param name="timeBatchViewFactory">fr copying this view in a group-by</param>
/// <param name="agentInstanceContext">is required view services</param>
/// <param name="timeDeltaComputation">delta computation</param>
public TimeAccumView(
TimeAccumViewFactory timeBatchViewFactory,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
ViewUpdatedCollection viewUpdatedCollection)
{
_agentInstanceContext = agentInstanceContext;
_factory = timeBatchViewFactory;
_timeDeltaComputation = timeDeltaComputation;
_viewUpdatedCollection = viewUpdatedCollection;
_scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
var callback = new ProxyScheduleHandleCallback
{
ProcScheduledTrigger = extensionServicesContext =>
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().QViewScheduledEval(this, _factory.ViewName);
}
SendRemoveStream();
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewScheduledEval();
}
}
};
_handle = new EPStatementHandleCallback(agentInstanceContext.EpStatementAgentInstanceHandle, callback);
agentInstanceContext.AddTerminationCallback(this);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="agentInstanceContext">The agent instance context.</param>
/// <param name="timeWindowViewFactory">for copying the view in a group-by</param>
/// <param name="timeDeltaComputation">is the computation of number of milliseconds before events gets pushedout of the timeWindow as oldData in the Update method.</param>
/// <param name="viewUpdatedCollection">is a collection the view must Update when receiving events</param>
public TimeWindowView(
AgentInstanceViewFactoryChainContext agentInstanceContext,
TimeWindowViewFactory timeWindowViewFactory,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
ViewUpdatedCollection viewUpdatedCollection)
{
_agentInstanceContext = agentInstanceContext;
_timeWindowViewFactory = timeWindowViewFactory;
_timeDeltaComputation = timeDeltaComputation;
_viewUpdatedCollection = viewUpdatedCollection;
_scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
_timeWindow = new TimeWindow(agentInstanceContext.IsRemoveStream);
ScheduleHandleCallback callback = new ProxyScheduleHandleCallback
{
ProcScheduledTrigger = extensionServicesContext => Instrument.With(
i => i.QViewScheduledEval(this, timeWindowViewFactory.ViewName),
i => i.AViewScheduledEval(),
Expire)
};
_handle = new EPStatementHandleCallback(agentInstanceContext.EpStatementAgentInstanceHandle, callback);
if (agentInstanceContext.StatementContext.ScheduleAdjustmentService != null)
{
agentInstanceContext.StatementContext.ScheduleAdjustmentService.AddCallback(this);
}
agentInstanceContext.AddTerminationCallback(Stop);
}
public TimeAccumView(
TimeAccumViewFactory timeBatchViewFactory,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ViewUpdatedCollection viewUpdatedCollection,
TimePeriodProvide timePeriodProvide)
{
this.agentInstanceContext = agentInstanceContext.AgentInstanceContext;
factory = timeBatchViewFactory;
this.viewUpdatedCollection = viewUpdatedCollection;
scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
this.timePeriodProvide = timePeriodProvide;
ScheduleHandleCallback callback = new ProxyScheduleHandleCallback {
ProcScheduledTrigger = () => {
agentInstanceContext.AuditProvider.ScheduleFire(
agentInstanceContext.AgentInstanceContext,
ScheduleObjectType.view,
factory.ViewName);
agentInstanceContext.InstrumentationProvider.QViewScheduledEval(factory);
SendRemoveStream();
agentInstanceContext.InstrumentationProvider.AViewScheduledEval();
}
};
handle = new EPStatementHandleCallbackSchedule(
agentInstanceContext.EpStatementAgentInstanceHandle,
callback);
}
public ExpressionBatchView(
ExpressionBatchViewFactory factory,
ViewUpdatedCollection viewUpdatedCollection,
ObjectArrayEventBean builtinEventProps,
AgentInstanceViewFactoryChainContext agentInstanceContext)
: base(factory, viewUpdatedCollection, builtinEventProps, agentInstanceContext)
{
}
protected ExpressionViewBase(
ViewUpdatedCollection viewUpdatedCollection,
ExprEvaluator expiryExpression,
AggregationServiceFactoryDesc aggregationServiceFactoryDesc,
ObjectArrayEventBean builtinEventProps,
ISet <String> variableNames,
AgentInstanceViewFactoryChainContext agentInstanceContext)
{
ViewUpdatedCollection = viewUpdatedCollection;
ExpiryExpression = expiryExpression;
BuiltinEventProps = builtinEventProps;
EventsPerStream = new EventBean[] { null, builtinEventProps };
VariableNames = variableNames;
AgentInstanceContext = agentInstanceContext;
if (variableNames != null && !variableNames.IsEmpty())
{
foreach (String variable in variableNames)
{
var variableName = variable;
var agentInstanceId = agentInstanceContext.AgentInstanceId;
var variableService = agentInstanceContext.StatementContext.VariableService;
agentInstanceContext.StatementContext.VariableService.RegisterCallback(variable, agentInstanceId, Update);
agentInstanceContext.AddTerminationCallback(
new ProxyStopCallback(() => variableService.UnregisterCallback(variableName, agentInstanceId, Update)));
}
ScheduleHandleCallback callback = new ProxyScheduleHandleCallback
{
ProcScheduledTrigger = extensionServicesContext => Instrument.With(
i => i.QViewScheduledEval(this, ViewName),
i => i.AViewScheduledEval(),
ScheduleCallback)
};
ScheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
ScheduleHandle = new EPStatementHandleCallback(agentInstanceContext.EpStatementAgentInstanceHandle, callback);
agentInstanceContext.AddTerminationCallback(this);
}
else
{
ScheduleSlot = -1;
ScheduleHandle = null;
}
if (aggregationServiceFactoryDesc != null)
{
AggregationService = aggregationServiceFactoryDesc.AggregationServiceFactory.MakeService(
agentInstanceContext.AgentInstanceContext,
agentInstanceContext.AgentInstanceContext.StatementContext.EngineImportService, false, null);
AggregateNodes = aggregationServiceFactoryDesc.Expressions;
}
else
{
AggregationService = null;
AggregateNodes = Collections.GetEmptyList <AggregationServiceAggExpressionDesc>();
}
}
public View MakeView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
ExprTimePeriodEvalDeltaConst timeDeltaComputation = _timeDeltaComputationFactory.Make(
ViewName, "view", agentInstanceViewFactoryContext.AgentInstanceContext);
ViewUpdatedCollection randomAccess =
agentInstanceViewFactoryContext.StatementContext.ViewServicePreviousFactory
.GetOptPreviousExprRandomAccess(agentInstanceViewFactoryContext);
return new TimeWindowView(agentInstanceViewFactoryContext, this, timeDeltaComputation, randomAccess);
}
/// <summary>
/// Constructor creates a moving window extending the specified number of elements into the past.
/// </summary>
/// <param name="dataWindowViewFactory">for copying this view in a group-by</param>
/// <param name="viewUpdatedCollection">is a collection that the view must update when receiving events</param>
/// <param name="expiryExpression">The expiry expression.</param>
/// <param name="AggregationServiceFactoryDesc">The aggregation service factory desc.</param>
/// <param name="builtinEventProps">The builtin event props.</param>
/// <param name="variableNames">variable names</param>
/// <param name="AgentInstanceContext">The agent instance context.</param>
public ExpressionWindowView(ExpressionWindowViewFactory dataWindowViewFactory,
ViewUpdatedCollection viewUpdatedCollection,
ExprEvaluator expiryExpression,
AggregationServiceFactoryDesc AggregationServiceFactoryDesc,
ObjectArrayEventBean builtinEventProps,
ISet <String> variableNames,
AgentInstanceViewFactoryChainContext AgentInstanceContext)
: base(viewUpdatedCollection, expiryExpression, AggregationServiceFactoryDesc, builtinEventProps, variableNames, AgentInstanceContext)
{
_dataWindowViewFactory = dataWindowViewFactory;
}
public AgentInstanceViewFactoryChainContext(
AgentInstanceContext agentInstanceContext,
bool isRemoveStream,
PreviousGetterStrategy previousNodeGetter,
ViewUpdatedCollection priorViewUpdatedCollection)
{
AgentInstanceContext = agentInstanceContext;
IsRemoveStream = isRemoveStream;
PreviousNodeGetter = previousNodeGetter;
PriorViewUpdatedCollection = priorViewUpdatedCollection;
}
public ExternallyTimedWindowView(
ExternallyTimedWindowViewFactory factory,
ViewUpdatedCollection viewUpdatedCollection,
AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext,
TimePeriodProvide timePeriodProvide)
{
this.factory = factory;
this.viewUpdatedCollection = viewUpdatedCollection;
this.timeWindow = new TimeWindow(agentInstanceViewFactoryContext.IsRemoveStream);
this.agentInstanceViewFactoryContext = agentInstanceViewFactoryContext;
this.timePeriodProvide = timePeriodProvide;
}
public ExternallyTimedBatchView(
ExternallyTimedBatchViewFactory factory,
ViewUpdatedCollection viewUpdatedCollection,
AgentInstanceViewFactoryChainContext agentInstanceContext,
TimePeriodProvide timePeriodProvide)
{
this.factory = factory;
this.viewUpdatedCollection = viewUpdatedCollection;
this.agentInstanceContext = agentInstanceContext.AgentInstanceContext;
referenceTimestamp = factory.optionalReferencePoint;
this.timePeriodProvide = timePeriodProvide;
}
public static PriorEvalStrategy ToStrategy(AgentInstanceViewFactoryChainContext viewFactoryChainContext)
{
ViewUpdatedCollection priorViewUpdatedCollection = viewFactoryChainContext.PriorViewUpdatedCollection;
if (priorViewUpdatedCollection is RandomAccessByIndex) {
return new ExprPriorEvalStrategyRandomAccess((RandomAccessByIndex) priorViewUpdatedCollection);
}
if (priorViewUpdatedCollection is RelativeAccessByEventNIndex) {
return new ExprPriorEvalStrategyRelativeAccess(
(RelativeAccessByEventNIndex) priorViewUpdatedCollection);
}
return null;
}
/// <summary>
/// Constructor creates a moving window extending the specified number of elements into the past.
/// </summary>
/// <param name="agentInstanceContext">The agent instance context.</param>
/// <param name="viewFactory">for copying this view in a group-by</param>
/// <param name="size">is the specified number of elements into the past</param>
/// <param name="viewUpdatedCollection">is a collection that the view must update when receiving events</param>
/// <exception cref="ArgumentException">Illegal argument for size of length window</exception>
public LengthWindowView(
AgentInstanceViewFactoryChainContext agentInstanceContext,
LengthWindowViewFactory viewFactory,
int size,
ViewUpdatedCollection viewUpdatedCollection)
{
if (size < 1) {
throw new ArgumentException("Illegal argument for size of length window");
}
this.agentInstanceContext = agentInstanceContext.AgentInstanceContext;
this.viewFactory = viewFactory;
Size = size;
ViewUpdatedCollection = viewUpdatedCollection;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="agentInstanceViewFactoryContext">The agent instance view factory context.</param>
/// <param name="lengthBatchViewFactory">for copying this view in a group-by</param>
/// <param name="size">is the number of events to batch</param>
/// <param name="viewUpdatedCollection">is a collection that the view must Update when receiving events</param>
public LengthBatchView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext,
LengthBatchViewFactory lengthBatchViewFactory,
int size,
ViewUpdatedCollection viewUpdatedCollection)
{
AgentInstanceViewFactoryContext = agentInstanceViewFactoryContext;
_lengthBatchViewFactory = lengthBatchViewFactory;
_size = size;
_viewUpdatedCollection = viewUpdatedCollection;
if (size <= 0)
{
throw new ArgumentException("Invalid size parameter, size=" + size);
}
}
public View MakeView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
int size = ViewFactorySupport.EvaluateSizeParam(
ViewName, _sizeEvaluator, agentInstanceViewFactoryContext.AgentInstanceContext);
ViewUpdatedCollection viewUpdatedCollection =
agentInstanceViewFactoryContext.StatementContext.ViewServicePreviousFactory
.GetOptPreviousExprRelativeAccess(agentInstanceViewFactoryContext);
if (agentInstanceViewFactoryContext.IsRemoveStream)
{
return new LengthBatchViewRStream(agentInstanceViewFactoryContext, this, size);
}
else
{
return new LengthBatchView(agentInstanceViewFactoryContext, this, size, viewUpdatedCollection);
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="factory">for copying this view in a group-by</param>
/// <param name="timestampExpression">is the field name containing a long timestamp valuethat should be in ascending order for the natural order of events and is intended to reflect
/// System.currentTimeInMillis but does not necessarily have to.
/// out of the window as oldData in the update method. The view compares
/// each events timestamp against the newest event timestamp and those with a delta
/// greater then secondsBeforeExpiry are pushed out of the window.</param>
/// <param name="timestampExpressionEval">The timestamp expression eval.</param>
/// <param name="timeDeltaComputation">The time delta computation.</param>
/// <param name="optionalReferencePoint">The optional reference point.</param>
/// <param name="viewUpdatedCollection">is a collection that the view must update when receiving events</param>
/// <param name="agentInstanceViewFactoryContext">context for expression evalauation</param>
public ExternallyTimedBatchView(ExternallyTimedBatchViewFactory factory,
ExprNode timestampExpression,
ExprEvaluator timestampExpressionEval,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
long?optionalReferencePoint,
ViewUpdatedCollection viewUpdatedCollection,
AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
_factory = factory;
_timestampExpression = timestampExpression;
_timestampExpressionEval = timestampExpressionEval;
_timeDeltaComputation = timeDeltaComputation;
ViewUpdatedCollection = viewUpdatedCollection;
AgentInstanceViewFactoryContext = agentInstanceViewFactoryContext;
ReferenceTimestamp = optionalReferencePoint;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="externallyTimedWindowViewFactory">for copying this view in a group-by</param>
/// <param name="timestampExpression">is the field name containing a long timestamp valuethat should be in ascending order for the natural order of
/// events and is intended to reflect
/// System.currentTimeInMillis but does not necessarily have to.
/// out of the window as oldData in the update method. The view compares
/// each events timestamp against the newest event timestamp and those with a delta
/// greater then secondsBeforeExpiry are pushed out of the window.</param>
/// <param name="timestampExpressionEval">The timestamp expression eval.</param>
/// <param name="timeDeltaComputation">The time delta computation.</param>
/// <param name="viewUpdatedCollection">is a collection that the view must update when receiving events</param>
/// <param name="agentInstanceViewFactoryContext">context for expression evalauation</param>
public ExternallyTimedWindowView(
ExternallyTimedWindowViewFactory externallyTimedWindowViewFactory,
ExprNode timestampExpression,
ExprEvaluator timestampExpressionEval,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
ViewUpdatedCollection viewUpdatedCollection,
AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
_externallyTimedWindowViewFactory = externallyTimedWindowViewFactory;
_timestampExpression = timestampExpression;
_timestampExpressionEval = timestampExpressionEval;
_timeDeltaComputation = timeDeltaComputation;
_viewUpdatedCollection = viewUpdatedCollection;
_timeWindow = new TimeWindow(agentInstanceViewFactoryContext.IsRemoveStream);
AgentInstanceViewFactoryContext = agentInstanceViewFactoryContext;
}
public View MakeView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
ExprTimePeriodEvalDeltaConst timeDeltaComputation = _timeDeltaComputationFactory.Make(
ViewName, "view", agentInstanceViewFactoryContext.AgentInstanceContext);
ViewUpdatedCollection randomAccess =
agentInstanceViewFactoryContext.StatementContext.ViewServicePreviousFactory
.GetOptPreviousExprRandomAccess(agentInstanceViewFactoryContext);
if (agentInstanceViewFactoryContext.IsRemoveStream)
{
return(new TimeAccumViewRStream(this, agentInstanceViewFactoryContext, timeDeltaComputation));
}
else
{
return(new TimeAccumView(this, agentInstanceViewFactoryContext, timeDeltaComputation, randomAccess));
}
}
public TimeLengthBatchView(
TimeLengthBatchViewFactory factory,
int size,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ViewUpdatedCollection viewUpdatedCollection,
TimePeriodProvide timePeriodProvide)
{
this.agentInstanceContext = agentInstanceContext.AgentInstanceContext;
this.factory = factory;
this.size = size;
this.viewUpdatedCollection = viewUpdatedCollection;
scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
this.timePeriodProvide = timePeriodProvide;
// schedule the first callback
if (factory.IsStartEager) {
ScheduleCallback(0);
}
}
public View MakeView(AgentInstanceViewFactoryChainContext agentInstanceViewFactoryContext)
{
ExprTimePeriodEvalDeltaConst timeDeltaComputation = timeDeltaComputationFactory.Make(
ViewName, "view", agentInstanceViewFactoryContext.AgentInstanceContext);
ViewUpdatedCollection viewUpdatedCollection =
agentInstanceViewFactoryContext.StatementContext.ViewServicePreviousFactory
.GetOptPreviousExprRelativeAccess(agentInstanceViewFactoryContext);
if (agentInstanceViewFactoryContext.IsRemoveStream)
{
return(new TimeBatchViewRStream(
this, agentInstanceViewFactoryContext, timeDeltaComputation, _optionalReferencePoint, IsForceUpdate,
IsStartEager));
}
else
{
return(new TimeBatchView(
this, agentInstanceViewFactoryContext, timeDeltaComputation, _optionalReferencePoint, IsForceUpdate,
IsStartEager, viewUpdatedCollection));
}
}
public TimeBatchView(
TimeBatchViewFactory factory,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ViewUpdatedCollection viewUpdatedCollection,
TimePeriodProvide timePeriodProvide)
{
_agentInstanceContext = agentInstanceContext.AgentInstanceContext;
_factory = factory;
_viewUpdatedCollection = viewUpdatedCollection;
_scheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
_timePeriodProvide = timePeriodProvide;
// schedule the first callback
if (factory.isStartEager) {
if (_currentReferencePoint == null) {
_currentReferencePoint = agentInstanceContext.StatementContext.SchedulingService.Time;
}
ScheduleCallback();
_isCallbackScheduled = true;
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="timeBatchViewFactory">fr copying this view in a group-by</param>
/// <param name="agentInstanceContext">is required view services</param>
/// <param name="timeDeltaComputation">The time delta computation.</param>
/// <param name="viewUpdatedCollection">is a collection that the view must Update when receiving events</param>
public TimeAccumView(
TimeAccumViewFactory timeBatchViewFactory,
AgentInstanceViewFactoryChainContext agentInstanceContext,
ExprTimePeriodEvalDeltaConst timeDeltaComputation,
ViewUpdatedCollection viewUpdatedCollection)
{
AgentInstanceContext = agentInstanceContext;
_factory = timeBatchViewFactory;
_timeDeltaComputation = timeDeltaComputation;
ViewUpdatedCollection = viewUpdatedCollection;
ScheduleSlot = agentInstanceContext.StatementContext.ScheduleBucket.AllocateSlot();
ScheduleHandleCallback callback = new ProxyScheduleHandleCallback
{
ProcScheduledTrigger = extensionServicesContext => Instrument.With(
i => i.QViewScheduledEval(this, _factory.ViewName),
i => i.AViewScheduledEval(),
SendRemoveStream)
};
Handle = new EPStatementHandleCallback(agentInstanceContext.EpStatementAgentInstanceHandle, callback);
agentInstanceContext.AddTerminationCallback(Stop);
}
private static void HandlePrior(ViewUpdatedCollection viewUpdatedCollection, IDictionary <int, IList <ExprPriorNode> > callbacksPerIndex, IDictionary <ExprPriorNode, ExprPriorEvalStrategy> strategies)
{
// Since an expression such as "prior(2, price), prior(8, price)" translates
// into {2, 8} the relative index is {0, 1}.
// Map the expression-supplied index to a relative viewUpdatedCollection-known index via wrapper
var relativeIndex = 0;
foreach (var reqIndex in callbacksPerIndex.Keys)
{
var priorNodes = callbacksPerIndex.Get(reqIndex);
foreach (var callback in priorNodes)
{
ExprPriorEvalStrategy strategy;
if (viewUpdatedCollection is RelativeAccessByEventNIndex)
{
var relativeAccess = (RelativeAccessByEventNIndex)viewUpdatedCollection;
var impl = new PriorEventViewRelAccess(relativeAccess, relativeIndex);
strategy = new ExprPriorEvalStrategyRelativeAccess(impl);
}
else
{
if (viewUpdatedCollection is RandomAccessByIndex)
{
strategy = new ExprPriorEvalStrategyRandomAccess((RandomAccessByIndex)viewUpdatedCollection);
}
else
{
strategy = new ExprPriorEvalStrategyRelativeAccess((RelativeAccessByEventNIndex)viewUpdatedCollection);
}
}
strategies.Put(callback, strategy);
}
relativeIndex++;
}
}
public static AgentInstanceViewFactoryChainContext Create(IList <ViewFactory> viewFactoryChain, AgentInstanceContext agentInstanceContext, ViewResourceDelegateVerifiedStream viewResourceDelegate)
{
Object previousNodeGetter = null;
if (viewResourceDelegate.PreviousRequests != null && !viewResourceDelegate.PreviousRequests.IsEmpty())
{
DataWindowViewWithPrevious factoryFound = EPStatementStartMethodHelperPrevious.FindPreviousViewFactory(viewFactoryChain);
previousNodeGetter = factoryFound.MakePreviousGetter();
}
ViewUpdatedCollection priorViewUpdatedCollection = null;
if (viewResourceDelegate.PriorRequests != null && !viewResourceDelegate.PriorRequests.IsEmpty())
{
var priorEventViewFactory = EPStatementStartMethodHelperPrior.FindPriorViewFactory(viewFactoryChain);
var callbacksPerIndex = viewResourceDelegate.PriorRequests;
priorViewUpdatedCollection = priorEventViewFactory.MakeViewUpdatedCollection(callbacksPerIndex, agentInstanceContext.AgentInstanceId);
}
bool removedStream = false;
if (viewFactoryChain.Count > 1)
{
int countDataWindow = 0;
foreach (ViewFactory viewFactory in viewFactoryChain)
{
if (viewFactory is DataWindowViewFactory)
{
countDataWindow++;
}
}
removedStream = countDataWindow > 1;
}
return(new AgentInstanceViewFactoryChainContext(agentInstanceContext, removedStream, previousNodeGetter, priorViewUpdatedCollection));
}
// Called based on schedule evaluation registered when a variable changes (new data is null).
// Called when new data arrives.
private void Expire(EventBean[] newData, EventBean[] oldData)
{
OneEventCollection expired = null;
if (oldData != null)
{
expired = new OneEventCollection();
expired.Add(oldData);
}
int expiredCount = 0;
if (!_window.IsEmpty())
{
ExpressionWindowTimestampEventPair newest = _window.Last;
while (true)
{
ExpressionWindowTimestampEventPair first = _window.First;
bool pass = CheckEvent(first, newest, expiredCount);
if (!pass)
{
if (expired == null)
{
expired = new OneEventCollection();
}
EventBean removed = _window.RemoveFirst().TheEvent;
expired.Add(removed);
if (AggregationService != null)
{
_removedEvents[0] = removed;
AggregationService.ApplyLeave(_removedEvents, null, AgentInstanceContext);
}
expiredCount++;
InternalHandleExpired(first);
}
else
{
break;
}
if (_window.IsEmpty())
{
if (AggregationService != null)
{
AggregationService.ClearResults(AgentInstanceContext);
}
break;
}
}
}
// Check for any events that get pushed out of the window
EventBean[] expiredArr = null;
if (expired != null)
{
expiredArr = expired.ToArray();
}
// update event buffer for access by expressions, if any
if (ViewUpdatedCollection != null)
{
ViewUpdatedCollection.Update(newData, expiredArr);
}
// If there are child views, call update method
if (HasViews)
{
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().QViewIndicate(this, _dataWindowViewFactory.ViewName, newData, expiredArr);
}
UpdateChildren(newData, expiredArr);
if (InstrumentationHelper.ENABLED)
{
InstrumentationHelper.Get().AViewIndicate();
}
}
}
// Called based on schedule evaluation registered when a variable changes (new data is null).
// Called when new data arrives.
public void Expire(int numEventsInBatch)
{
if (numEventsInBatch == Window.Count || numEventsInBatch == -1)
{
var batchNewData = Window.ToArray();
if (ViewUpdatedCollection != null)
{
ViewUpdatedCollection.Update(batchNewData, LastBatch);
}
// post
if (batchNewData != null || LastBatch != null)
{
Instrument.With(
i => i.QViewIndicate(this, _dataWindowViewFactory.ViewName, batchNewData, LastBatch),
i => i.AViewIndicate(),
() => UpdateChildren(batchNewData, LastBatch));
}
// clear
Window.Clear();
LastBatch = batchNewData;
if (AggregationService != null)
{
AggregationService.ClearResults(AgentInstanceContext);
}
OldestEvent = null;
NewestEvent = null;
}
else
{
var batchNewData = Window.Take(numEventsInBatch).ToArray();
unchecked
{
for (int ii = 0; ii < batchNewData.Length; ii++)
{
Window.Remove(batchNewData[ii]);
}
}
if (ViewUpdatedCollection != null)
{
ViewUpdatedCollection.Update(batchNewData, LastBatch);
}
// post
if (batchNewData != null || LastBatch != null)
{
Instrument.With(
i => i.QViewIndicate(this, _dataWindowViewFactory.ViewName, batchNewData, LastBatch),
i => i.AViewIndicate(),
() => UpdateChildren(batchNewData, LastBatch));
}
// clear
LastBatch = batchNewData;
if (AggregationService != null)
{
AggregationService.ApplyLeave(batchNewData, null, AgentInstanceContext);
}
OldestEvent = Window.FirstOrDefault();
}
}
