public EventBean[] SnapshotUpdate(
QueryGraph filterQueryGraph,
ExprEvaluator optionalWhereClause,
EventBeanUpdateHelperWCopy updateHelper,
Attribute[] annotations)
{
using (AgentInstanceContext.EpStatementAgentInstanceHandle.StatementAgentInstanceLock.AcquireReadLock()) {
try {
var events = SnapshotNoLockWithFilter(
filterQueryGraph,
annotations,
optionalWhereClause,
AgentInstanceContext);
if (events.IsEmpty()) {
return CollectionUtil.EVENTBEANARRAY_EMPTY;
}
var eventsPerStream = new EventBean[3];
var updated = new EventBean[events.Count];
var count = 0;
foreach (var @event in events) {
updated[count++] = updateHelper.Invoke(@event, eventsPerStream, AgentInstanceContext);
}
var deleted = events.ToArray();
_rootViewInstance.Update(updated, deleted);
return updated;
}
finally {
ReleaseTableLocks(AgentInstanceContext);
}
}
}
public InfraOnMergeActionUpd(
ExprEvaluator optionalFilter,
EventBeanUpdateHelperWCopy namedWindowUpdate)
: base(
optionalFilter)
{
this.namedWindowUpdate = namedWindowUpdate;
tableUpdate = null;
}
public InfraOnMergeActionUpd(
ExprEvaluator optionalFilter,
EventBeanUpdateHelperNoCopy tableUpdate,
Table table)
: base(optionalFilter)
{
this.tableUpdate = tableUpdate;
namedWindowUpdate = null;
this.table = table;
InitTableUpdateStrategy(table);
}
public InfraOnUpdateViewFactory(
EventType infraEventType,
EventBeanUpdateHelperWCopy updateHelperNamedWindow,
EventBeanUpdateHelperNoCopy updateHelperTable,
Table table,
StatementContext statementContext)
: base(
infraEventType)
{
UpdateHelperNamedWindow = updateHelperNamedWindow;
UpdateHelperTable = updateHelperTable;
this.table = table;
if (table != null) {
InitTableUpdateStrategy(table);
table.AddUpdateStrategyCallback(this);
statementContext.AddFinalizeCallback(
new ProxyStatementFinalizeCallback {
ProcStatementDestroyed = context => { this.table.RemoveUpdateStrategyCallback(this); }
});
}
}
