public class ExprPlugInAggNode extends ExprAggregateNodeBase implements ExprAggregationPlugInNodeMarker
aggregationResultFuture, column, isDistinct, optionalAggregateLocalGroupByDesc, optionalFilter, positionalParams| Constructor and Description |
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ExprPlugInAggNode(boolean distinct,
AggregationFunctionFactory aggregationFunctionFactory,
String functionName)
Ctor.
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| Modifier and Type | Method and Description |
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boolean |
equalsNodeAggregateMethodOnly(ExprAggregateNode node)
Return true if a expression aggregate node semantically equals the current node, or false if not.
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String |
getAggregationFunctionName()
Returns the aggregation function name for representation in a generate expression string.
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protected boolean |
isFilterExpressionAsLastParameter() |
AggregationMethodFactory |
validateAggregationChild(ExprValidationContext validationContext)
Gives the aggregation node a chance to validate the sub-expression types.
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equalsNode, evaluate, evaluateCodegen, getComplexity, getEvaluationType, getExprEvaluator, getFactory, getForge, getForgeRenderable, getOptionalFilter, getOptionalLocalGroupBy, getPositionalParams, getPrecedence, isConstantResult, isDistinct, isExprTextWildcardWhenNoParams, makeExceptionExpectedParamNum, setAggregationResultFuture, toPrecedenceFreeEPL, validate, validateFilter, validateNumericChildAllowFilter, validatePositionalsaccept, accept, acceptChildnodes, addChildNode, addChildNodes, addChildNodeToFront, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodes, toEPLclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitaccept, accept, acceptChildnodes, addChildNode, addChildNodes, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodestoEPLpublic ExprPlugInAggNode(boolean distinct,
AggregationFunctionFactory aggregationFunctionFactory,
String functionName)
distinct - - flag indicating unique or non-unique value aggregationaggregationFunctionFactory - - is the base class for plug-in aggregation functionsfunctionName - is the aggregation function namepublic AggregationMethodFactory validateAggregationChild(ExprValidationContext validationContext) throws ExprValidationException
ExprAggregateNodeBasevalidateAggregationChild in class ExprAggregateNodeBasevalidationContext - validation informationExprValidationException - when expression validation failedpublic String getAggregationFunctionName()
ExprAggregateNodeBasegetAggregationFunctionName in class ExprAggregateNodeBasepublic final boolean equalsNodeAggregateMethodOnly(ExprAggregateNode node)
ExprAggregateNodeBaseFor use by the equalsNode implementation which compares the distinct flag.
equalsNodeAggregateMethodOnly in class ExprAggregateNodeBasenode - to compare toprotected boolean isFilterExpressionAsLastParameter()
isFilterExpressionAsLastParameter in class ExprAggregateNodeBase