public void TestRemoveChainLeafView()
{
// Remove a non-leaf, expect no removals
IList <View> removedViews = ViewServiceHelper.RemoveChainLeafView(top, child_2_2);
Assert.AreEqual(0, removedViews.Count);
Assert.AreEqual(2, child_2.Views.Length);
// Remove the whole tree child-by-child
removedViews = ViewServiceHelper.RemoveChainLeafView(top, child_2_2_2);
Assert.AreEqual(1, removedViews.Count);
Assert.AreEqual(child_2_2_2, removedViews[0]);
Assert.AreEqual(2, child_2.Views.Length);
removedViews = ViewServiceHelper.RemoveChainLeafView(top, child_2_2_1);
Assert.AreEqual(2, removedViews.Count);
Assert.AreEqual(child_2_2_1, removedViews[0]);
Assert.AreEqual(child_2_2, removedViews[1]);
Assert.AreEqual(1, child_2.Views.Length);
removedViews = ViewServiceHelper.RemoveChainLeafView(top, child_1);
Assert.AreEqual(1, removedViews.Count);
Assert.AreEqual(child_1, removedViews[0]);
removedViews = ViewServiceHelper.RemoveChainLeafView(top, child_2_1_1);
Assert.AreEqual(3, removedViews.Count);
Assert.AreEqual(child_2_1_1, removedViews[0]);
Assert.AreEqual(child_2_1, removedViews[1]);
Assert.AreEqual(child_2, removedViews[2]);
Assert.AreEqual(0, child_2.Views.Length);
Assert.AreEqual(0, top.Views.Length);
}
public ViewServiceCreateResult CreateViews(
Viewable eventStreamViewable,
IList <ViewFactory> viewFactories,
AgentInstanceViewFactoryChainContext viewFactoryChainContext,
bool hasPreviousNode)
{
// Attempt to find existing views under the stream that match specs.
// The viewSpecList may have been changed by this method.
Pair <Viewable, IList <View> > resultPair;
if (hasPreviousNode)
{
resultPair = new Pair <Viewable, IList <View> >(eventStreamViewable, Collections.GetEmptyList <View>());
}
else
{
resultPair = ViewServiceHelper.MatchExistingViews(eventStreamViewable, viewFactories, viewFactoryChainContext.AgentInstanceContext);
}
var parentViewable = resultPair.First;
if (viewFactories.IsEmpty())
{
if (Log.IsDebugEnabled)
{
Log.Debug(".createView No new views created, dumping stream ... " + eventStreamViewable);
ViewSupport.DumpChildViews("EventStream ", eventStreamViewable);
}
return(new ViewServiceCreateResult(parentViewable, parentViewable, Collections.GetEmptyList <View>())); // we know its a view here since the factory list is empty
}
// Instantiate remaining chain of views from the remaining factories which didn't match to existing views.
var views = ViewServiceHelper.InstantiateChain(parentViewable, viewFactories, viewFactoryChainContext);
// Initialize any views that need initializing after the chain is complete
foreach (var view in views)
{
if (view is InitializableView)
{
var initView = (InitializableView)view;
initView.Initialize();
}
}
if (Log.IsDebugEnabled)
{
Log.Debug(".createView New views created for stream, all views ... " + eventStreamViewable);
ViewSupport.DumpChildViews("EventStream ", eventStreamViewable);
}
return(new ViewServiceCreateResult(views[views.Count - 1], views[0], views));
}
public void TestAddMergeViews()
{
IList <ViewSpec> specOne = SupportViewSpecFactory.MakeSpecListOne();
ViewServiceHelper.AddMergeViews(specOne);
Assert.AreEqual(3, specOne.Count);
IList <ViewSpec> specFour = SupportViewSpecFactory.MakeSpecListTwo();
ViewServiceHelper.AddMergeViews(specFour);
Assert.AreEqual(3, specFour.Count);
Assert.AreEqual("merge", specFour[2].ObjectName);
Assert.AreEqual(specFour[0].ObjectParameters.Count, specFour[1].ObjectParameters.Count);
}
public void TestInstantiateChain()
{
SupportBeanClassView topView = new SupportBeanClassView(TEST_CLASS);
IList <ViewFactory> viewFactories = SupportViewSpecFactory.MakeFactoryListOne(topView.EventType);
AgentInstanceViewFactoryChainContext context = SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext();
// Check correct views created
IList <View> views = ViewServiceHelper.InstantiateChain(topView, viewFactories, context);
Assert.AreEqual(3, views.Count);
Assert.AreEqual(typeof(LengthWindowView), views[0].GetType());
Assert.AreEqual(typeof(UnivariateStatisticsView), views[1].GetType());
Assert.AreEqual(typeof(LastElementView), views[2].GetType());
// Check that the context is set
viewFactories = SupportViewSpecFactory.MakeFactoryListFive(topView.EventType);
views = ViewServiceHelper.InstantiateChain(topView, viewFactories, context);
TimeWindowView timeWindow = (TimeWindowView)views[0];
}
public void Remove(EventStream eventStream, Viewable viewToRemove)
{
// If the viewToRemove to remove has child viewToRemove, don't disconnect - the child ViewToRemove(s) need this
if (viewToRemove.HasViews)
{
return;
}
if (Log.IsDebugEnabled)
{
Log.Debug(".remove Views before the remove of view " + viewToRemove + ", for event stream " + eventStream);
ViewSupport.DumpChildViews("EventStream ", eventStream);
}
// Remove views in chain leaving only non-empty parent views to the child view to be removed
ViewServiceHelper.RemoveChainLeafView(eventStream, viewToRemove);
if (Log.IsDebugEnabled)
{
Log.Debug(".remove Views after the remove, for event stream " + eventStream);
ViewSupport.DumpChildViews("EventStream ", eventStream);
}
}
public ViewFactoryChain CreateFactories(int streamNum, EventType parentEventType, ViewSpec[] viewSpecDefinitions, StreamSpecOptions options, StatementContext context, bool isSubquery, int subqueryNumber)
{
// Clone the view spec list to prevent parameter modification
IList <ViewSpec> viewSpecList = new List <ViewSpec>(viewSpecDefinitions);
// Inspect views and add merge views if required
ViewServiceHelper.AddMergeViews(viewSpecList);
// Instantiate factories, not making them aware of each other yet
var viewFactories = ViewServiceHelper.InstantiateFactories(streamNum, viewSpecList, context, isSubquery, subqueryNumber);
ViewFactory parentViewFactory = null;
IList <ViewFactory> attachedViewFactories = new List <ViewFactory>();
for (var i = 0; i < viewFactories.Count; i++)
{
var factoryToAttach = viewFactories[i];
try
{
factoryToAttach.Attach(parentEventType, context, parentViewFactory, attachedViewFactories);
attachedViewFactories.Add(viewFactories[i]);
parentEventType = factoryToAttach.EventType;
}
catch (ViewParameterException ex)
{
var text = "Error attaching view to parent view";
if (i == 0)
{
text = "Error attaching view to event stream";
}
throw new ViewProcessingException(text + ": " + ex.Message, ex);
}
}
// obtain count of data windows
var dataWindowCount = 0;
var firstNonDataWindowIndex = -1;
for (var i = 0; i < viewFactories.Count; i++)
{
var factory = viewFactories[i];
if (factory is DataWindowViewFactory)
{
dataWindowCount++;
continue;
}
if ((factory is GroupByViewFactoryMarker) || (factory is MergeViewFactory))
{
continue;
}
if (firstNonDataWindowIndex == -1)
{
firstNonDataWindowIndex = i;
}
}
var isAllowMultipleExpiry = context.ConfigSnapshot.EngineDefaults.ViewResources.IsAllowMultipleExpiryPolicies;
var isRetainIntersection = options.IsRetainIntersection;
var isRetainUnion = options.IsRetainUnion;
// Set the default to retain-intersection unless allow-multiple-expiry is turned on
if ((!isAllowMultipleExpiry) && (!isRetainUnion))
{
isRetainIntersection = true;
}
// handle multiple data windows with retain union.
// wrap view factories into the union view factory and handle a group-by, if present
if ((isRetainUnion || isRetainIntersection) && dataWindowCount > 1)
{
viewFactories = GetRetainViewFactories(parentEventType, viewFactories, isRetainUnion, context);
}
return(new ViewFactoryChain(parentEventType, viewFactories));
}
public void TestMatch()
{
SupportStreamImpl stream = new SupportStreamImpl(TEST_CLASS, 10);
IList <ViewFactory> viewFactories = SupportViewSpecFactory.MakeFactoryListOne(stream.EventType);
// No views under stream, no matches
Pair <Viewable, IList <View> > result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(stream, result.First);
Assert.AreEqual(3, viewFactories.Count);
Assert.AreEqual(0, result.Second.Count);
// One top view under the stream that doesn't match
SupportBeanClassView testView = new SupportBeanClassView(TEST_CLASS);
stream.AddView(new FirstElementView(null));
result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(stream, result.First);
Assert.AreEqual(3, viewFactories.Count);
Assert.AreEqual(0, result.Second.Count);
// Another top view under the stream that doesn't matche again
testView = new SupportBeanClassView(TEST_CLASS);
stream.AddView(new LengthWindowView(SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext(), null, 999, null));
result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(stream, result.First);
Assert.AreEqual(3, viewFactories.Count);
Assert.AreEqual(0, result.Second.Count);
// One top view under the stream that does actually match
LengthWindowView myLengthWindowView = new LengthWindowView(SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext(), null, 1000, null);
stream.AddView(myLengthWindowView);
result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(myLengthWindowView, result.First);
Assert.AreEqual(2, viewFactories.Count);
Assert.AreEqual(1, result.Second.Count);
Assert.AreEqual(myLengthWindowView, result.Second[0]);
// One child view under the top view that does not match
testView = new SupportBeanClassView(TEST_CLASS);
viewFactories = SupportViewSpecFactory.MakeFactoryListOne(stream.EventType);
EventType type = UnivariateStatisticsView.CreateEventType(SupportStatementContextFactory.MakeContext(), null, 1);
UnivariateStatisticsViewFactory factory = new UnivariateStatisticsViewFactory();
factory.EventType = type;
factory.FieldExpression = SupportExprNodeFactory.MakeIdentNodeBean("LongBoxed");
myLengthWindowView.AddView(new UnivariateStatisticsView(factory, SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext()));
result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(1, result.Second.Count);
Assert.AreEqual(myLengthWindowView, result.Second[0]);
Assert.AreEqual(myLengthWindowView, result.First);
Assert.AreEqual(2, viewFactories.Count);
// Add child view under the top view that does match
viewFactories = SupportViewSpecFactory.MakeFactoryListOne(stream.EventType);
UnivariateStatisticsViewFactory factoryTwo = new UnivariateStatisticsViewFactory();
factoryTwo.EventType = type;
factoryTwo.FieldExpression = SupportExprNodeFactory.MakeIdentNodeBean("IntPrimitive");
UnivariateStatisticsView myUnivarView = new UnivariateStatisticsView(factoryTwo, SupportStatementContextFactory.MakeAgentInstanceViewFactoryContext());
myLengthWindowView.AddView(myUnivarView);
result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(myUnivarView, result.First);
Assert.AreEqual(1, viewFactories.Count);
// Add ultimate child view under the child view that does match
viewFactories = SupportViewSpecFactory.MakeFactoryListOne(stream.EventType);
LastElementView lastElementView = new LastElementView(null);
myUnivarView.AddView(lastElementView);
result = ViewServiceHelper.MatchExistingViews(stream, viewFactories);
Assert.AreEqual(lastElementView, result.First);
Assert.AreEqual(0, viewFactories.Count);
}