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

Class SumAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

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

All Implemented Interfaces:

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

Direct Known Subclasses:

SumAggFunction.ByteSumAggFunction, SumAggFunction.DecimalSumAggFunction, SumAggFunction.DoubleSumAggFunction, SumAggFunction.FloatSumAggFunction, SumAggFunction.IntSumAggFunction, SumAggFunction.LongSumAggFunction, SumAggFunction.ShortSumAggFunction

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

built-in sum aggregate function.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SumAggFunction.ByteSumAggFunction Built-in Byte Sum aggregate function.
static class	SumAggFunction.DecimalSumAggFunction Built-in Decimal Sum aggregate function.
static class	SumAggFunction.DoubleSumAggFunction Built-in Double Sum aggregate function.
static class	SumAggFunction.FloatSumAggFunction Built-in Float Sum aggregate function.
static class	SumAggFunction.IntSumAggFunction Built-in Int Sum aggregate function.
static class	SumAggFunction.LongSumAggFunction Built-in Long Sum aggregate function.
static class	SumAggFunction.ShortSumAggFunction Built-in Short Sum aggregate function.

Constructor Summary

Constructors

Constructor and Description
SumAggFunction()

Method Summary

Modifier and Type	Method and Description
org.apache.flink.table.expressions.Expression[]	accumulateExpressions()
protected org.apache.flink.table.expressions.UnresolvedCallExpression	adjustedPlus(org.apache.flink.table.expressions.UnresolvedReferenceExpression arg1, org.apache.flink.table.expressions.UnresolvedReferenceExpression arg2)
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

SumAggFunction

public SumAggFunction()

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

adjustedPlus

protected org.apache.flink.table.expressions.UnresolvedCallExpression adjustedPlus(org.apache.flink.table.expressions.UnresolvedReferenceExpression arg1,
                                                                                   org.apache.flink.table.expressions.UnresolvedReferenceExpression arg2)

getValueExpression

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

Specified by:

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