org.apache.flink.table.runtime.operators.over.frame

类 RowSlidingOverFrame

java.lang.Object

org.apache.flink.table.runtime.operators.over.frame.SlidingOverFrame

org.apache.flink.table.runtime.operators.over.frame.RowSlidingOverFrame

所有已实现的接口:

Serializable, OverWindowFrame

public class RowSlidingOverFrame
extends SlidingOverFrame

The row sliding window frame calculates frames with the following SQL form: ... ROW BETWEEN [window frame preceding] AND [window frame following] [window frame preceding] ::= [unsigned_value_specification] PRECEDING | CURRENT ROW [window frame following] ::= [unsigned_value_specification] FOLLOWING | CURRENT ROW

e.g.: ... ROW BETWEEN 1 PRECEDING AND 1 FOLLOWING.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
RowSlidingOverFrame(org.apache.flink.table.types.logical.RowType inputType, org.apache.flink.table.types.logical.RowType valueType, GeneratedAggsHandleFunction aggsHandleFunction, long leftBound, long rightBound)

方法概要

限定符和类型	方法和说明
void	prepare(ResettableExternalBuffer rows) Prepare for next partition.
org.apache.flink.table.data.RowData	process(int index, org.apache.flink.table.data.RowData current) return the ACC of the window frame.

从类继承的方法 org.apache.flink.table.runtime.operators.over.frame.SlidingOverFrame

open

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.runtime.operators.over.frame.OverWindowFrame

getNextOrNull

构造器详细资料

RowSlidingOverFrame

public RowSlidingOverFrame(org.apache.flink.table.types.logical.RowType inputType,
                           org.apache.flink.table.types.logical.RowType valueType,
                           GeneratedAggsHandleFunction aggsHandleFunction,
                           long leftBound,
                           long rightBound)

方法详细资料

prepare

public void prepare(ResettableExternalBuffer rows)
             throws Exception

从接口复制的说明: OverWindowFrame

Prepare for next partition.

指定者:

prepare 在接口中 OverWindowFrame

覆盖:

prepare 在类中 SlidingOverFrame

抛出:

Exception

process

public org.apache.flink.table.data.RowData process(int index,
                                                   org.apache.flink.table.data.RowData current)
                                            throws Exception

从接口复制的说明: OverWindowFrame

return the ACC of the window frame.

抛出:

Exception