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

Class DenseRankAggFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.DeclarativeAggregateFunction

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

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

All Implemented Interfaces:

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

public class DenseRankAggFunction
extends RankLikeAggFunctionBase

built-in dense_rank aggregate function.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.flink.table.planner.functions.aggfunctions.RankLikeAggFunctionBase

lastValues, orderKeyTypes, sequence

Constructor Summary

Constructors

Constructor	Description
DenseRankAggFunction(org.apache.flink.table.types.logical.LogicalType[] orderKeyTypes)

Method Summary

Modifier and Type	Method	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[]	initialValuesExpressions()

Methods inherited from class org.apache.flink.table.planner.functions.aggfunctions.RankLikeAggFunctionBase

generateInitLiteral, getResultType, getValueExpression, mergeExpressions, operandCount, orderKeyEqualsExpression, retractExpressions

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

getKind, 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

DenseRankAggFunction

public DenseRankAggFunction(org.apache.flink.table.types.logical.LogicalType[] orderKeyTypes)

Method Details

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