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

Class SumWithRetractAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

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

All Implemented Interfaces:

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

Direct Known Subclasses:

SumWithRetractAggFunction.ByteSumWithRetractAggFunction, SumWithRetractAggFunction.DecimalSumWithRetractAggFunction, SumWithRetractAggFunction.DoubleSumWithRetractAggFunction, SumWithRetractAggFunction.FloatSumWithRetractAggFunction, SumWithRetractAggFunction.IntSumWithRetractAggFunction, SumWithRetractAggFunction.LongSumWithRetractAggFunction, SumWithRetractAggFunction.ShortSumWithRetractAggFunction

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

built-in sum aggregate function with retraction.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SumWithRetractAggFunction.ByteSumWithRetractAggFunction	Built-in Byte Sum with retract aggregate function.
static class	SumWithRetractAggFunction.DecimalSumWithRetractAggFunction	Built-in Decimal Sum with retract aggregate function.
static class	SumWithRetractAggFunction.DoubleSumWithRetractAggFunction	Built-in Double Sum with retract aggregate function.
static class	SumWithRetractAggFunction.FloatSumWithRetractAggFunction	Built-in Float Sum with retract aggregate function.
static class	SumWithRetractAggFunction.IntSumWithRetractAggFunction	Built-in Int Sum with retract aggregate function.
static class	SumWithRetractAggFunction.LongSumWithRetractAggFunction	Built-in Long Sum with retract aggregate function.
static class	SumWithRetractAggFunction.ShortSumWithRetractAggFunction	Built-in Short Sum with retract aggregate function.

Constructor Summary

Constructors

Constructor	Description
SumWithRetractAggFunction()

Method Summary

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

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, supportsConstantFolding

Constructor Details

SumWithRetractAggFunction

public SumWithRetractAggFunction()

Method Details

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

zeroLiteral

protected abstract org.apache.flink.table.expressions.Expression zeroLiteral()

adjustedPlus

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

adjustedMinus

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