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

类 RangeSlidingOverFrame

java.lang.Object

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

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

所有已实现的接口:

Serializable, OverWindowFrame

public class RangeSlidingOverFrame
extends SlidingOverFrame

The range sliding window frame calculates frames with the following SQL form: ... RANGE 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.: ... RANGE 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
RangeSlidingOverFrame(org.apache.flink.table.types.logical.RowType inputType, org.apache.flink.table.types.logical.RowType valueType, GeneratedAggsHandleFunction aggsHandleFunction, GeneratedRecordComparator lboundComparator, GeneratedRecordComparator rboundComparator)

方法概要

限定符和类型	方法和说明
void	open(ExecutionContext ctx) Open to init with ExecutionContext.
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

prepare

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

RangeSlidingOverFrame

public RangeSlidingOverFrame(org.apache.flink.table.types.logical.RowType inputType,
                             org.apache.flink.table.types.logical.RowType valueType,
                             GeneratedAggsHandleFunction aggsHandleFunction,
                             GeneratedRecordComparator lboundComparator,
                             GeneratedRecordComparator rboundComparator)

参数:

lboundComparator - comparator used to identify the lower bound of an output row.

rboundComparator - comparator used to identify the upper bound of an output row.

方法详细资料

open

public void open(ExecutionContext ctx)
          throws Exception

从接口复制的说明: OverWindowFrame

Open to init with ExecutionContext.

指定者:

open 在接口中 OverWindowFrame

覆盖:

open 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