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

Class SessionWindowSpec

java.lang.Object

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

All Implemented Interfaces:

WindowSpec

public class SessionWindowSpec
extends Object
implements WindowSpec

Logical representation of a session window specification.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	FIELD_NAME_GAP
static final String	FIELD_NAME_PARTITION_KEYS

Constructor Summary

Constructors

Constructor	Description
SessionWindowSpec(Duration gap, int[] partitionKeyIndices)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
Duration	getGap()
int[]	getPartitionKeyIndices()
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_GAP

public static final String FIELD_NAME_GAP

See Also:

• Constant Field Values

FIELD_NAME_PARTITION_KEYS

public static final String FIELD_NAME_PARTITION_KEYS

See Also:

• Constant Field Values

Constructor Details

SessionWindowSpec

public SessionWindowSpec(Duration gap,
 int[] partitionKeyIndices)

Method Details

toSummaryString

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

Specified by:

toSummaryString in interface WindowSpec

getGap

public Duration getGap()

getPartitionKeyIndices

public int[] getPartitionKeyIndices()

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