public override AggregationForgeFactory ValidateAggregationChild(ExprValidationContext validationContext)
{
if (positionalParams.Length == 0 || positionalParams.Length > 2) {
throw new ExprValidationException(MinMaxTypeEnum + " node must have either 1 or 2 parameters");
}
var child = positionalParams[0];
bool hasDataWindows;
if (IsEver) {
hasDataWindows = false;
}
else {
if (validationContext.StatementType == StatementType.CREATE_TABLE) {
hasDataWindows = true;
}
else {
hasDataWindows = ExprNodeUtilityAggregation.HasRemoveStreamForAggregations(
child,
validationContext.StreamTypeService,
validationContext.IsResettingAggregations);
}
}
if (isFFunc) {
if (positionalParams.Length < 2) {
throw new ExprValidationException(
MinMaxTypeEnum +
"-filtered aggregation function must have a filter expression as a second parameter");
}
ValidateFilter(positionalParams[1]);
}
HasFilter = positionalParams.Length == 2;
if (HasFilter) {
optionalFilter = positionalParams[1];
}
var evaluationType = child.Forge.EvaluationType;
var serde = validationContext.SerdeResolver.SerdeForAggregation(evaluationType, validationContext.StatementRawInfo);
var distinctSerde = isDistinct ? validationContext.SerdeResolver.SerdeForAggregationDistinct(evaluationType, validationContext.StatementRawInfo) : null;
return new AggregationForgeFactoryMinMax(this, evaluationType, hasDataWindows, serde, distinctSerde);
}
public override AggregationForgeFactory ValidateAggregationChild(ExprValidationContext validationContext)
{
Type[] parameterTypes = new Type[positionalParams.Length];
object[] constant = new object[positionalParams.Length];
bool[] isConstant = new bool[positionalParams.Length];
ExprNode[] expressions = new ExprNode[positionalParams.Length];
int count = 0;
bool hasDataWindows = true;
foreach (ExprNode child in positionalParams) {
if (child.Forge.ForgeConstantType == ExprForgeConstantType.COMPILETIMECONST) {
isConstant[count] = true;
constant[count] = child.Forge.ExprEvaluator.Evaluate(null, true, null);
}
parameterTypes[count] = child.Forge.EvaluationType;
expressions[count] = child;
if (!ExprNodeUtilityAggregation.HasRemoveStreamForAggregations(
child,
validationContext.StreamTypeService,
validationContext.IsResettingAggregations)) {
hasDataWindows = false;
}
if (child is ExprWildcard) {
ExprAggMultiFunctionUtil.CheckWildcardNotJoinOrSubquery(
validationContext.StreamTypeService,
functionName);
parameterTypes[count] = validationContext.StreamTypeService.EventTypes[0].UnderlyingType;
isConstant[count] = false;
constant[count] = null;
}
count++;
}
LinkedHashMap<string, IList<ExprNode>> namedParameters = null;
if (optionalFilter != null) {
namedParameters = new LinkedHashMap<string, IList<ExprNode>>();
namedParameters.Put("filter", Collections.SingletonList(optionalFilter));
positionalParams = ExprNodeUtilityMake.AddExpression(positionalParams, optionalFilter);
}
AggregationFunctionValidationContext context = new AggregationFunctionValidationContext(
parameterTypes,
isConstant,
constant,
base.IsDistinct,
hasDataWindows,
expressions,
namedParameters);
try {
// the aggregation function factory is transient, obtain if not provided
if (aggregationFunctionForge == null) {
aggregationFunctionForge =
validationContext.ImportService.ResolveAggregationFunction(functionName);
}
aggregationFunctionForge.Validate(context);
}
catch (Exception ex) {
throw new ExprValidationException(
"Plug-in aggregation function '" + functionName + "' failed validation: " + ex.Message,
ex);
}
AggregationFunctionMode mode = aggregationFunctionForge.AggregationFunctionMode;
if (mode == null) {
throw new ExprValidationException("Aggregation function forge returned a null value for mode");
}
if (mode is AggregationFunctionModeManaged) {
if (positionalParams.Length > 2) {
throw new ExprValidationException(
"Aggregation function forge single-value mode requires zero, one or two parameters");
}
}
else if (mode is AggregationFunctionModeMultiParam || mode is AggregationFunctionModeCodeGenerated) {
}
else {
throw new ExprValidationException("Aggregation function forge returned an unrecognized mode " + mode);
}
return new AggregationMethodFactoryPluginMethod(this, aggregationFunctionForge, mode);
}
public override AggregationForgeFactory ValidateAggregationChild(ExprValidationContext validationContext)
{
if (this.positionalParams.Length == 0) {
throw new ExprValidationException(
"The rate aggregation function minimally requires a numeric constant or expression as a parameter.");
}
// handle "ever"
ExprNode first = this.positionalParams[0];
if (first.Forge.ForgeConstantType.IsCompileTimeConstant) {
string messageX =
"The rate aggregation function requires a numeric constant or time period as the first parameter in the constant-value notation";
long intervalTime;
if (first is ExprTimePeriod) {
double secInterval = ((ExprTimePeriod) first).EvaluateAsSeconds(null, true, null);
intervalTime =
validationContext.ImportService.TimeAbacus.DeltaForSecondsDouble(secInterval);
}
else if (ExprNodeUtilityQuery.IsConstant(first)) {
if (!first.Forge.EvaluationType.IsNumeric()) {
throw new ExprValidationException(messageX);
}
var num = first.Forge.ExprEvaluator.Evaluate(null, true, null);
intervalTime = validationContext.ImportService.TimeAbacus.DeltaForSecondsNumber(num);
}
else {
throw new ExprValidationException(messageX);
}
if (optionalFilter == null) {
this.positionalParams = ExprNodeUtilityQuery.EMPTY_EXPR_ARRAY;
}
else {
this.positionalParams = new ExprNode[] {optionalFilter};
}
return new AggregationForgeFactoryRate(this, true, intervalTime, validationContext.ImportService.TimeAbacus);
}
string message =
"The rate aggregation function requires a property or expression returning a non-constant long-type value as the first parameter in the timestamp-property notation";
Type boxedParamOne = first.Forge.EvaluationType.GetBoxedType();
if (boxedParamOne != typeof(long?)) {
throw new ExprValidationException(message);
}
if (first.Forge.ForgeConstantType.IsConstant) {
throw new ExprValidationException(message);
}
if (first is ExprTimestampNode) {
throw new ExprValidationException(
"The rate aggregation function does not allow the current runtime timestamp as a parameter");
}
if (this.positionalParams.Length > 1) {
if (!this.positionalParams[1].Forge.EvaluationType.IsNumeric()) {
throw new ExprValidationException(
"The rate aggregation function accepts an expression returning a numeric value to accumulate as an optional second parameter");
}
}
bool hasDataWindows = ExprNodeUtilityAggregation.HasRemoveStreamForAggregations(
first,
validationContext.StreamTypeService,
validationContext.IsResettingAggregations);
if (!hasDataWindows) {
throw new ExprValidationException(
"The rate aggregation function in the timestamp-property notation requires data windows");
}
if (optionalFilter != null) {
positionalParams = ExprNodeUtilityMake.AddExpression(positionalParams, optionalFilter);
}
return new AggregationForgeFactoryRate(this, false, -1, validationContext.ImportService.TimeAbacus);
}
