Package org.apache.flink.table.planner.plan.logical

Class HoppingWindowSpec

java.lang.Object

org.apache.flink.table.planner.plan.logical.HoppingWindowSpec

All Implemented Interfaces:

WindowSpec

public class HoppingWindowSpec
extends Object
implements WindowSpec

Logical representation of a hopping window specification.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FIELD_NAME_OFFSET
static final String	FIELD_NAME_SIZE
static final String	FIELD_NAME_SLIDE

Constructor Summary

Constructors

Constructor	Description
HoppingWindowSpec(Duration size, Duration slide, Duration offset)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
Duration	getOffset()
Duration	getSize()
Duration	getSlide()
int	hashCode()
boolean	isAlignedWindow()	Return true if the window is aligned.
String	toString()
String	toSummaryString(String windowing, String[] inputFieldNames)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

FIELD_NAME_SIZE

public static final String FIELD_NAME_SIZE

See Also:

• Constant Field Values

FIELD_NAME_SLIDE

public static final String FIELD_NAME_SLIDE

See Also:

• Constant Field Values

FIELD_NAME_OFFSET

public static final String FIELD_NAME_OFFSET

See Also:

• Constant Field Values

Constructor Details

HoppingWindowSpec

public HoppingWindowSpec(Duration size,
 Duration slide,
 @Nullable
 Duration offset)

Method Details

toSummaryString

public String toSummaryString(String windowing,
 String[] inputFieldNames)

Specified by:

toSummaryString in interface WindowSpec

getSize

public Duration getSize()

getSlide

public Duration getSlide()

getOffset

public Duration getOffset()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

isAlignedWindow

public boolean isAlignedWindow()

Description copied from interface: WindowSpec

Return true if the window is aligned.

See more details about aligned window and unaligned window in WindowAggOperator.

Specified by:

isAlignedWindow in interface WindowSpec