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

Class MinAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

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

All Implemented Interfaces:

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

Direct Known Subclasses:

MinAggFunction.BooleanMinAggFunction, MinAggFunction.ByteMinAggFunction, MinAggFunction.DateMinAggFunction, MinAggFunction.DecimalMinAggFunction, MinAggFunction.DoubleMinAggFunction, MinAggFunction.FloatMinAggFunction, MinAggFunction.IntMinAggFunction, MinAggFunction.LongMinAggFunction, MinAggFunction.ShortMinAggFunction, MinAggFunction.StringMinAggFunction, MinAggFunction.TimeMinAggFunction, MinAggFunction.TimestampLtzMinAggFunction, MinAggFunction.TimestampMinAggFunction

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

built-in min aggregate function.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MinAggFunction.BooleanMinAggFunction Built-in Boolean Min aggregate function.
static class	MinAggFunction.ByteMinAggFunction Built-in Byte Min aggregate function.
static class	MinAggFunction.DateMinAggFunction Built-in Date Min aggregate function.
static class	MinAggFunction.DecimalMinAggFunction Built-in Decimal Min aggregate function.
static class	MinAggFunction.DoubleMinAggFunction Built-in Double Min aggregate function.
static class	MinAggFunction.FloatMinAggFunction Built-in Float Min aggregate function.
static class	MinAggFunction.IntMinAggFunction Built-in Int Min aggregate function.
static class	MinAggFunction.LongMinAggFunction Built-in Long Min aggregate function.
static class	MinAggFunction.ShortMinAggFunction Built-in Short Min aggregate function.
static class	MinAggFunction.StringMinAggFunction Built-in String Min aggregate function.
static class	MinAggFunction.TimeMinAggFunction Built-in Time Min aggregate function.
static class	MinAggFunction.TimestampLtzMinAggFunction Built-in TimestampLtz Min aggregate function.
static class	MinAggFunction.TimestampMinAggFunction Built-in Timestamp Min aggregate function.

Constructor Summary

Constructors

Constructor and Description
MinAggFunction()

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

MinAggFunction

public MinAggFunction()

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