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

Class RangeUnboundedFollowingOverFrame

java.lang.Object

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

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

All Implemented Interfaces:

Serializable, OverWindowFrame

public class RangeUnboundedFollowingOverFrame
extends UnboundedFollowingOverFrame

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

e.g.: ... RANGE BETWEEN 1 PRECEDING AND UNBOUNDED FOLLOWING.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RangeUnboundedFollowingOverFrame(RowType valueType, GeneratedAggsHandleFunction aggsHandleFunction, GeneratedRecordComparator boundComparator)

Method Summary

Modifier and Type	Method and Description
void	open(ExecutionContext ctx) Open to init with ExecutionContext.
RowData	process(int index, RowData current) return the ACC of the window frame.

Methods inherited from class org.apache.flink.table.runtime.operators.over.frame.UnboundedFollowingOverFrame

prepare

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.runtime.operators.over.frame.OverWindowFrame

getNextOrNull

Constructor Detail

RangeUnboundedFollowingOverFrame

public RangeUnboundedFollowingOverFrame(RowType valueType,
                                        GeneratedAggsHandleFunction aggsHandleFunction,
                                        GeneratedRecordComparator boundComparator)

Method Detail

open

public void open(ExecutionContext ctx)
          throws Exception

Description copied from interface: OverWindowFrame

Open to init with ExecutionContext.

Specified by:

open in interface OverWindowFrame

Overrides:

open in class UnboundedFollowingOverFrame

Throws:

Exception

process

public RowData process(int index,
                       RowData current)
                throws Exception

Description copied from interface: OverWindowFrame

return the ACC of the window frame.

Throws:

Exception