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

Class RangeSlidingOverFrame

java.lang.Object

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

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

All Implemented Interfaces:

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.

See Also:

• Serialized Form

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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.

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

prepare

Methods inherited from class java.lang.Object

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

Constructor Details

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)

Parameters:

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

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

Method Details

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 SlidingOverFrame

Throws:

Exception

process

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

Description copied from interface: OverWindowFrame

return the ACC of the window frame.

Throws:

Exception