/// <summary>
/// Ctor.
/// </summary>
/// <param name="expressionNoAnnotations">expression text witout annotations</param>
/// <param name="isPattern">is true to indicate this is a pure pattern expression</param>
/// <param name="dispatchService">for dispatching events to listeners to the statement</param>
/// <param name="statementLifecycleSvc">handles lifecycle transitions for the statement</param>
/// <param name="timeLastStateChange">the timestamp the statement was created and started</param>
/// <param name="isBlockingDispatch">is true if the dispatch to listeners should block to preserve event generation order</param>
/// <param name="isSpinBlockingDispatch">true to use spin locks blocking to deliver results, as locks are usually uncontended</param>
/// <param name="msecBlockingTimeout">is the max number of milliseconds of block time</param>
/// <param name="timeSourceService">time source provider</param>
/// <param name="statementMetadata">statement metadata</param>
/// <param name="userObject">the application define user object associated to each statement, if supplied</param>
/// <param name="statementContext">the statement service context</param>
/// <param name="isFailed">indicator to start in failed state</param>
/// <param name="nameProvided">true to indicate a statement name has been provided and is not a system-generated name</param>
public EPStatementImpl(
String expressionNoAnnotations,
bool isPattern,
DispatchService dispatchService,
StatementLifecycleSvc statementLifecycleSvc,
long timeLastStateChange,
bool isBlockingDispatch,
bool isSpinBlockingDispatch,
long msecBlockingTimeout,
TimeSourceService timeSourceService,
StatementMetadata statementMetadata,
Object userObject,
StatementContext statementContext,
bool isFailed,
bool nameProvided)
{
_statementLifecycleSvc = statementLifecycleSvc;
_statementListenerSet = new EPStatementListenerSet();
IsPattern = isPattern;
ExpressionNoAnnotations = expressionNoAnnotations;
StatementContext = statementContext;
IsNameProvided = nameProvided;
if (isBlockingDispatch)
{
if (isSpinBlockingDispatch)
{
_dispatchChildView = new UpdateDispatchViewBlockingSpin(
statementContext.StatementResultService,
dispatchService, msecBlockingTimeout,
timeSourceService,
statementContext.ThreadLocalManager);
}
else
{
_dispatchChildView = new UpdateDispatchViewBlockingWait(
statementContext.StatementResultService,
dispatchService, msecBlockingTimeout,
statementContext.ThreadLocalManager);
}
}
else
{
_dispatchChildView = new UpdateDispatchViewNonBlocking(
statementContext.StatementResultService,
dispatchService,
statementContext.ThreadLocalManager);
}
State = !isFailed ? EPStatementState.STOPPED : EPStatementState.FAILED;
TimeLastStateChange = timeLastStateChange;
StatementMetadata = statementMetadata;
UserObject = userObject;
statementContext.StatementResultService.SetUpdateListeners(_statementListenerSet, false);
}
public void Dispose()
{
if (State == EPStatementState.DESTROYED)
{
throw new IllegalStateException("Statement already destroyed");
}
_statementLifecycleSvc.Destroy(StatementContext.StatementId);
_parentView = null;
EventType = null;
_dispatchChildView = null;
_statementLifecycleSvc = null;
}