com.exasol.sql.expression.function.exasol

Class AnalyticFunction

java.lang.Object

com.exasol.sql.expression.function.AbstractFunction

com.exasol.sql.expression.function.exasol.AnalyticFunction

All Implemented Interfaces:

Function, ValueExpression

public class AnalyticFunction
extends AbstractFunction

This class represents an analytic function in the Exasol database that supports keywords DISTINCT and ALL and the over clause.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AnalyticFunction.Keyword

Field Summary

Fields inherited from class com.exasol.sql.expression.function.AbstractFunction

functionName, parameters

Method Summary

Modifier and Type	Method and Description
void	accept(FunctionVisitor visitor) Accept FunctionVisitor.
AnalyticFunction.Keyword	getKeyword() Get the keyword for the function call, may be null.
OverClause	getOverClause() Get the "over clause" appended to the function call, may be null.
boolean	hasParenthesis() Check if function needs parenthesis.
AnalyticFunction	keywordAll() Add keyword ALL to the function call
AnalyticFunction	keywordDistinct() Add keyword DISTINCT to the function call
static AnalyticFunction	of(ExasolAnalyticAggregateFunctions functionName, ValueExpression... valueExpressions) Create a new AnalyticFunction instance.
AnalyticFunction	over(OverClause overClause) Add the given over clause to the function call.
AnalyticFunction	over(UnaryOperator<OverClause> configurator) Add an OVER clause to the function call.

Methods inherited from class com.exasol.sql.expression.function.AbstractFunction

accept, getFunctionName, getParameters

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

of

public static AnalyticFunction of(ExasolAnalyticAggregateFunctions functionName,
                                  ValueExpression... valueExpressions)

Create a new AnalyticFunction instance.

Parameters:

functionName - name of the function

valueExpressions - zero or more value expressions

Returns:

new AnalyticFunction

keywordDistinct

public AnalyticFunction keywordDistinct()

Add keyword DISTINCT to the function call

Returns:

this AnalyticFunction for fluent programming

keywordAll

public AnalyticFunction keywordAll()

Add keyword ALL to the function call

Returns:

this AnalyticFunction for fluent programming

getKeyword

public AnalyticFunction.Keyword getKeyword()

Get the keyword for the function call, may be null.

Returns:

keyword for the function call

over

public AnalyticFunction over(OverClause overClause)

Add the given over clause to the function call.

Parameters:

overClause - over clause to add

Returns:

this AnalyticFunction for fluent programming

over

public AnalyticFunction over(UnaryOperator<OverClause> configurator)

Add an OVER clause to the function call. You configure the clause in the given lambda.

Parameters:

configurator - lambda configuring the OverClause.

Returns:

this AnalyticFunction for fluent programming

getOverClause

public OverClause getOverClause()

Get the "over clause" appended to the function call, may be null.

Returns:

"over clause" appended to the function call

hasParenthesis

public boolean hasParenthesis()

Description copied from interface: Function

Check if function needs parenthesis.

Returns:

true if function has parenthesis with parameters

accept

public void accept(FunctionVisitor visitor)

Description copied from interface: Function

Accept FunctionVisitor.

Parameters:

visitor - visitor to accept