org.apache.phoenix.parse

Class DelegateConstantToCountParseNode

java.lang.Object

org.apache.phoenix.parse.ParseNode

org.apache.phoenix.parse.CompoundParseNode

org.apache.phoenix.parse.FunctionParseNode

org.apache.phoenix.parse.AggregateFunctionParseNode

org.apache.phoenix.parse.DelegateConstantToCountParseNode

Direct Known Subclasses:

DistinctCountHyperLogLogAggregateParseNode, DistinctCountParseNode, FirstValueAggregateParseNode, FirstValuesAggregateParseNode, LastValueAggregateParseNode, LastValuesAggregateParseNode, MaxAggregateParseNode, MinAggregateParseNode, NthValueAggregateParseNode, SumAggregateParseNode

public abstract class DelegateConstantToCountParseNode
extends AggregateFunctionParseNode

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.phoenix.parse.FunctionParseNode

FunctionParseNode.Argument, FunctionParseNode.BuiltInFunction, FunctionParseNode.BuiltInFunctionArgInfo, FunctionParseNode.BuiltInFunctionInfo, FunctionParseNode.FunctionClassType

Constructor Summary

Constructors

Constructor and Description
DelegateConstantToCountParseNode(String name, List<ParseNode> children, FunctionParseNode.BuiltInFunctionInfo info)

Method Summary

Methods

Modifier and Type	Method and Description
abstract FunctionExpression	create(List<Expression> children, StatementContext context) Entry point for parser to instantiate compiled representation of built-in function
protected CountAggregateFunction	getDelegateFunction(List<Expression> children, StatementContext context)

Methods inherited from class org.apache.phoenix.parse.AggregateFunctionParseNode

isStateless

Methods inherited from class org.apache.phoenix.parse.FunctionParseNode

accept, create, equals, evalToNullIfParamIsNull, getInfo, getName, hashCode, isAggregate, toSQL, validate, validateFunctionArguement

Methods inherited from class org.apache.phoenix.parse.CompoundParseNode

getChildren

Methods inherited from class org.apache.phoenix.parse.ParseNode

getAlias, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DelegateConstantToCountParseNode

public DelegateConstantToCountParseNode(String name,
                                List<ParseNode> children,
                                FunctionParseNode.BuiltInFunctionInfo info)

Method Detail

getDelegateFunction

protected CountAggregateFunction getDelegateFunction(List<Expression> children,
                                         StatementContext context)

create

public abstract FunctionExpression create(List<Expression> children,
                        StatementContext context)
                                   throws SQLException

Description copied from class: FunctionParseNode

Entry point for parser to instantiate compiled representation of built-in function

Overrides:

create in class FunctionParseNode

Parameters:

children - Compiled expressions for child nodes

context - Query context for accessing state shared across the processing of multiple clauses

Returns:

compiled representation of built-in function

Throws:

SQLException