org.apache.flink.table.runtime.operators.aggregate.window.buffers

Interface WindowBuffer.Factory

All Superinterfaces:

Serializable

All Known Implementing Classes:

RecordsWindowBuffer.Factory

Enclosing interface:

WindowBuffer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface WindowBuffer.Factory
extends Serializable

A factory that creates a WindowBuffer.

Method Summary

Modifier and Type

Method and Description

WindowBuffer

create(Object operatorOwner, org.apache.flink.runtime.memory.MemoryManager memoryManager, long memorySize, org.apache.flink.api.common.functions.RuntimeContext runtimeContext, WindowTimerService<Long> timerService, org.apache.flink.runtime.state.KeyedStateBackend<org.apache.flink.table.data.RowData> stateBackend, WindowState<Long> windowState, boolean isEventTime, ZoneId shiftTimeZone) Creates a WindowBuffer that buffers elements in memory before flushing.

Method Detail

create

WindowBuffer create(Object operatorOwner,
                    org.apache.flink.runtime.memory.MemoryManager memoryManager,
                    long memorySize,
                    org.apache.flink.api.common.functions.RuntimeContext runtimeContext,
                    WindowTimerService<Long> timerService,
                    org.apache.flink.runtime.state.KeyedStateBackend<org.apache.flink.table.data.RowData> stateBackend,
                    WindowState<Long> windowState,
                    boolean isEventTime,
                    ZoneId shiftTimeZone)
             throws Exception

Creates a WindowBuffer that buffers elements in memory before flushing.

Parameters:

operatorOwner - the owner of the operator

memoryManager - the manager that governs memory by Flink framework

memorySize - the managed memory size can be used by this operator

runtimeContext - the current RuntimeContext

timerService - the service to register event-time and processing-time timers

stateBackend - the state backend to accessing states

windowState - the window state to flush buffered data into.

isEventTime - indicates whether the operator works in event-time or processing-time mode, used for register corresponding timers.

shiftTimeZone - the shift timezone of the window

Throws:

IOException - thrown if the buffer can't be opened

Exception