public static ExprTimePeriodEvalDeltaConstFactory ValidateAndEvaluateTimeDeltaFactory(
string viewName,
StatementContext statementContext,
ExprNode expression,
string expectedMessage,
int expressionNumber)
{
var streamTypeService = new StreamTypeServiceImpl(statementContext.EngineURI, false);
ExprTimePeriodEvalDeltaConstFactory factory;
if (expression is ExprTimePeriod)
{
var validated = (ExprTimePeriod) ViewFactorySupport.ValidateExpr(
viewName, statementContext, expression, streamTypeService, expressionNumber);
factory = validated.ConstEvaluator(new ExprEvaluatorContextStatement(statementContext, false));
}
else
{
var validated = ViewFactorySupport.ValidateExpr(
viewName, statementContext, expression, streamTypeService, expressionNumber);
var secondsEvaluator = validated.ExprEvaluator;
var returnType = secondsEvaluator.ReturnType.GetBoxedType();
if (!returnType.IsNumeric())
{
throw new ViewParameterException(expectedMessage);
}
if (validated.IsConstantResult)
{
var time = ViewFactorySupport.Evaluate(secondsEvaluator, 0, viewName, statementContext);
if (!ExprTimePeriodUtil.ValidateTime(time, statementContext.TimeAbacus))
{
throw new ViewParameterException(ExprTimePeriodUtil.GetTimeInvalidMsg(viewName, "view", time));
}
var msec = statementContext.TimeAbacus.DeltaForSecondsNumber(time);
factory = new ExprTimePeriodEvalDeltaConstGivenDelta(msec);
}
else
{
factory = new ExprTimePeriodEvalDeltaConstFactoryMsec(secondsEvaluator, statementContext.TimeAbacus);
}
}
return factory;
}
public static ExprTimePeriodEvalDeltaConst ValidateAndEvaluateTimeDelta(String viewName,
StatementContext statementContext,
ExprNode expression,
String expectedMessage,
int expressionNumber)
{
StreamTypeService streamTypeService = new StreamTypeServiceImpl(statementContext.EngineURI, false);
ExprTimePeriodEvalDeltaConst timeDelta;
if (expression is ExprTimePeriod)
{
ExprTimePeriod validated = (ExprTimePeriod)ViewFactorySupport.ValidateExpr(viewName, statementContext, expression, streamTypeService, expressionNumber);
timeDelta = validated.ConstEvaluator(new ExprEvaluatorContextStatement(statementContext, false));
}
else
{
var result = ViewFactorySupport.ValidateAndEvaluateExpr(viewName, statementContext, expression, streamTypeService, expressionNumber);
if (!result.IsNumber())
{
throw new ViewParameterException(expectedMessage);
}
long millisecondsBeforeExpiry;
if (TypeHelper.IsFloatingPointNumber(result))
{
millisecondsBeforeExpiry = (long)Math.Round(1000d * result.AsDouble());
}
else
{
millisecondsBeforeExpiry = 1000 * result.AsLong();
}
timeDelta = new ExprTimePeriodEvalDeltaConstMsec(millisecondsBeforeExpiry);
}
if (timeDelta.DeltaMillisecondsAdd(0) < 1)
{
throw new ViewParameterException(viewName + " view requires a size of at least 1 msec");
}
return(timeDelta);
}