org.apache.flink.table.runtime.functions.aggregate

类 LastValueWithRetractAggFunction<T>

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.ImperativeAggregateFunction<T,ACC>

org.apache.flink.table.functions.AggregateFunction<T,ACC>

org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>

org.apache.flink.table.runtime.functions.aggregate.LastValueWithRetractAggFunction<T>

所有已实现的接口:

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

@Internal
public final class LastValueWithRetractAggFunction<T>
extends BuiltInAggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>

Built-in LAST_VALUE with retraction aggregate function.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> Accumulator for LAST_VALUE with retraction.

构造器概要

构造器

构造器和说明
LastValueWithRetractAggFunction(org.apache.flink.table.types.logical.LogicalType valueType)

方法概要

限定符和类型	方法和说明
void	accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc, Object value)
void	accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc, Object value, Long order)
void	accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc, org.apache.flink.table.data.StringData value)
void	accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc, org.apache.flink.table.data.StringData value, Long order)
LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>	createAccumulator()
org.apache.flink.table.types.DataType	getAccumulatorDataType()
List<org.apache.flink.table.types.DataType>	getArgumentDataTypes()
org.apache.flink.table.types.DataType	getOutputDataType()
T	getValue(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc)
void	resetAccumulator(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc)
void	retract(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc, Object value)
void	retract(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc, Object value, Long order)

从类继承的方法 org.apache.flink.table.runtime.functions.aggregate.BuiltInAggregateFunction

getRequirements, getTypeInference, isDeterministic

从类继承的方法 org.apache.flink.table.functions.AggregateFunction

getKind

从类继承的方法 org.apache.flink.table.functions.ImperativeAggregateFunction

getAccumulatorType, getResultType

从类继承的方法 org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

从类继承的方法 java.lang.Object

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

构造器详细资料

LastValueWithRetractAggFunction

public LastValueWithRetractAggFunction(org.apache.flink.table.types.logical.LogicalType valueType)

方法详细资料

getArgumentDataTypes

public List<org.apache.flink.table.types.DataType> getArgumentDataTypes()

覆盖:

getArgumentDataTypes 在类中 BuiltInAggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>

getAccumulatorDataType

public org.apache.flink.table.types.DataType getAccumulatorDataType()

覆盖:

getAccumulatorDataType 在类中 BuiltInAggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>

getOutputDataType

public org.apache.flink.table.types.DataType getOutputDataType()

覆盖:

getOutputDataType 在类中 BuiltInAggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>

createAccumulator

public LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> createAccumulator()

指定者:

createAccumulator 在类中 org.apache.flink.table.functions.ImperativeAggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>

accumulate

public void accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc,
                       Object value)
                throws Exception

抛出:

Exception

accumulate

public void accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc,
                       Object value,
                       Long order)
                throws Exception

抛出:

Exception

accumulate

public void accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc,
                       org.apache.flink.table.data.StringData value)
                throws Exception

抛出:

Exception

accumulate

public void accumulate(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc,
                       org.apache.flink.table.data.StringData value,
                       Long order)
                throws Exception

抛出:

Exception

retract

public void retract(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc,
                    Object value)
             throws Exception

抛出:

Exception

retract

public void retract(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc,
                    Object value,
                    Long order)
             throws Exception

抛出:

Exception

resetAccumulator

public void resetAccumulator(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc)

getValue

public T getValue(LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T> acc)

指定者:

getValue 在类中 org.apache.flink.table.functions.AggregateFunction<T,LastValueWithRetractAggFunction.LastValueWithRetractAccumulator<T>>