// assign strategies to expression nodes
EPStatementStartMethodHelperAssignExpr.assignExpressionStrategies(selectDesc, selectResult.getOptionalAggegationService(), selectResult.getSubselectStrategies(), selectResult.getPriorNodeStrategies(), selectResult.getPreviousNodeStrategies());
EventType outputEventType = selectDesc.getResultSetProcessorPrototypeDesc().getResultSetProcessorFactory().getResultEventType();
this.agentInstanceContext = agentInstanceContext;
return new DataFlowOpInitializeResult(new GraphTypeDesc[] {new GraphTypeDesc(false, true, outputEventType)});
}