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

类 RangeUnboundedPrecedingOverFrame

java.lang.Object

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

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

所有已实现的接口:

Serializable, OverWindowFrame

public class RangeUnboundedPrecedingOverFrame
extends UnboundedPrecedingOverFrame

The range UnboundPreceding window frame calculates frames with the following SQL form: ... RANGE BETWEEN UNBOUNDED PRECEDING AND [window frame following] [window frame following] ::= [unsigned_value_specification] FOLLOWING | CURRENT ROW

e.g.: ... RANGE BETWEEN UNBOUNDED 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
RangeUnboundedPrecedingOverFrame(GeneratedAggsHandleFunction aggsHandleFunction, GeneratedRecordComparator boundComparator)

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.UnboundedPrecedingOverFrame

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

RangeUnboundedPrecedingOverFrame

public RangeUnboundedPrecedingOverFrame(GeneratedAggsHandleFunction aggsHandleFunction,
                                        GeneratedRecordComparator boundComparator)

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 UnboundedPrecedingOverFrame

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