private static View copyChildView(
GroupByView groupView,
String[] propertyNames,
Object groupByValues,
AgentInstanceViewFactoryChainContext agentInstanceContext,
View originalChildView) {
if (originalChildView instanceof MergeView) {
String message = "Unexpected merge view as child of group-by view";
log.fatal(".copySubViews " + message);
throw new EPException(message);
}
if (!(originalChildView instanceof CloneableView)) {
throw new EPException(
"Unexpected error copying subview " + originalChildView.getClass().getName());
}
CloneableView cloneableView = (CloneableView) originalChildView;
// Copy child node
View copyChildView = cloneableView.cloneView();
copyChildView.setParent(groupView);
// Make the sub views for child copying from the original to the child
copySubViews(
groupView.getCriteriaExpressions(),
propertyNames,
groupByValues,
originalChildView,
copyChildView,
agentInstanceContext);
return copyChildView;
}
private static void copySubViews(
ExprNode[] criteriaExpressions,
String[] propertyNames,
Object groupByValues,
View originalView,
View copyView,
AgentInstanceViewFactoryChainContext agentInstanceContext) {
for (View subView : originalView.getViews()) {
// Determine if view is our merge view
if (subView instanceof MergeViewMarker) {
MergeViewMarker mergeView = (MergeViewMarker) subView;
if (ExprNodeUtility.deepEquals(mergeView.getGroupFieldNames(), criteriaExpressions)) {
// We found our merge view - install a new data merge view on top of it
AddPropertyValueView mergeDataView =
new AddPropertyValueView(
agentInstanceContext, propertyNames, groupByValues, mergeView.getEventType());
// Add to the copied parent subview the view merge data view
copyView.addView(mergeDataView);
// Add to the new merge data view the actual single merge view instance that clients may
// attached to
mergeDataView.addView(mergeView);
// Add a parent view to the single merge view instance
mergeView.addParentView(mergeDataView);
continue;
}
}
if (!(subView instanceof CloneableView)) {
throw new EPException("Unexpected error copying subview");
}
CloneableView cloneableView = (CloneableView) subView;
View copiedChild = cloneableView.cloneView();
copyView.addView(copiedChild);
// Make the sub views for child
copySubViews(
criteriaExpressions,
propertyNames,
groupByValues,
subView,
copiedChild,
agentInstanceContext);
}
}