org.apache.flink.table.planner.functions.aggfunctions

Class MaxAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

org.apache.flink.table.planner.functions.aggfunctions.MaxAggFunction

All Implemented Interfaces:

Serializable, org.apache.flink.table.functions.FunctionDefinition

Direct Known Subclasses:

MaxAggFunction.BooleanMaxAggFunction, MaxAggFunction.ByteMaxAggFunction, MaxAggFunction.DateMaxAggFunction, MaxAggFunction.DecimalMaxAggFunction, MaxAggFunction.DoubleMaxAggFunction, MaxAggFunction.FloatMaxAggFunction, MaxAggFunction.IntMaxAggFunction, MaxAggFunction.LongMaxAggFunction, MaxAggFunction.ShortMaxAggFunction, MaxAggFunction.StringMaxAggFunction, MaxAggFunction.TimeMaxAggFunction, MaxAggFunction.TimestampLtzMaxAggFunction, MaxAggFunction.TimestampMaxAggFunction

public abstract class MaxAggFunction
extends org.apache.flink.table.functions.DeclarativeAggregateFunction

built-in max aggregate function.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MaxAggFunction.BooleanMaxAggFunction Built-in Boolean Max aggregate function.
static class	MaxAggFunction.ByteMaxAggFunction Built-in Byte Max aggregate function.
static class	MaxAggFunction.DateMaxAggFunction Built-in Date Max aggregate function.
static class	MaxAggFunction.DecimalMaxAggFunction Built-in Decimal Max aggregate function.
static class	MaxAggFunction.DoubleMaxAggFunction Built-in Double Max aggregate function.
static class	MaxAggFunction.FloatMaxAggFunction Built-in Float Max aggregate function.
static class	MaxAggFunction.IntMaxAggFunction Built-in Int Max aggregate function.
static class	MaxAggFunction.LongMaxAggFunction Built-in Long Max aggregate function.
static class	MaxAggFunction.ShortMaxAggFunction Built-in Short Max aggregate function.
static class	MaxAggFunction.StringMaxAggFunction Built-in String Max aggregate function.
static class	MaxAggFunction.TimeMaxAggFunction Built-in Time Max aggregate function.
static class	MaxAggFunction.TimestampLtzMaxAggFunction Built-in TimestampLtz Max aggregate function.
static class	MaxAggFunction.TimestampMaxAggFunction Built-in Timestamp Max aggregate function.

Constructor Summary

Constructors

Constructor and Description
MaxAggFunction()

Method Summary

Modifier and Type	Method and Description
org.apache.flink.table.expressions.Expression[]	accumulateExpressions()
org.apache.flink.table.expressions.UnresolvedReferenceExpression[]	aggBufferAttributes()
org.apache.flink.table.types.DataType[]	getAggBufferTypes()
org.apache.flink.table.expressions.Expression	getValueExpression()
org.apache.flink.table.expressions.Expression[]	initialValuesExpressions()
org.apache.flink.table.expressions.Expression[]	mergeExpressions()
int	operandCount()
org.apache.flink.table.expressions.Expression[]	retractExpressions()

Methods inherited from class org.apache.flink.table.functions.DeclarativeAggregateFunction

getKind, getResultType, getTypeInference, mergeOperand, mergeOperands, operand, operands

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

getRequirements, isDeterministic

Constructor Detail

MaxAggFunction

public MaxAggFunction()

Method Detail

operandCount

public int operandCount()

Specified by:

operandCount in class org.apache.flink.table.functions.DeclarativeAggregateFunction

aggBufferAttributes

public org.apache.flink.table.expressions.UnresolvedReferenceExpression[] aggBufferAttributes()

Specified by:

aggBufferAttributes in class org.apache.flink.table.functions.DeclarativeAggregateFunction

getAggBufferTypes

public org.apache.flink.table.types.DataType[] getAggBufferTypes()

Specified by:

getAggBufferTypes in class org.apache.flink.table.functions.DeclarativeAggregateFunction

initialValuesExpressions

public org.apache.flink.table.expressions.Expression[] initialValuesExpressions()

Specified by:

initialValuesExpressions in class org.apache.flink.table.functions.DeclarativeAggregateFunction

accumulateExpressions

public org.apache.flink.table.expressions.Expression[] accumulateExpressions()

Specified by:

accumulateExpressions in class org.apache.flink.table.functions.DeclarativeAggregateFunction

retractExpressions

public org.apache.flink.table.expressions.Expression[] retractExpressions()

Specified by:

retractExpressions in class org.apache.flink.table.functions.DeclarativeAggregateFunction

mergeExpressions

public org.apache.flink.table.expressions.Expression[] mergeExpressions()

Specified by:

mergeExpressions in class org.apache.flink.table.functions.DeclarativeAggregateFunction

getValueExpression

public org.apache.flink.table.expressions.Expression getValueExpression()

Specified by:

getValueExpression in class org.apache.flink.table.functions.DeclarativeAggregateFunction