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

Class UnboundedOverWindowFrame

java.lang.Object

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

All Implemented Interfaces:

Serializable, OverWindowFrame

public class UnboundedOverWindowFrame
extends Object
implements OverWindowFrame

The unbounded window frame calculates frames with the following SQL forms: ... (No Frame Definition) ... BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UnboundedOverWindowFrame(GeneratedAggsHandleFunction aggsHandleFunction, RowType valueType)

Method Summary

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

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

UnboundedOverWindowFrame

public UnboundedOverWindowFrame(GeneratedAggsHandleFunction aggsHandleFunction,
                                RowType valueType)

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

Throws:

Exception

prepare

public void prepare(ResettableExternalBuffer rows)
             throws Exception

Description copied from interface: OverWindowFrame

Prepare for next partition.

Specified by:

prepare in interface OverWindowFrame

Throws:

Exception

process

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

Description copied from interface: OverWindowFrame

return the ACC of the window frame.

Specified by:

process in interface OverWindowFrame

Throws:

Exception