SessionWindowSpec (Flink : 2.0-SNAPSHOT API)

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 String FIELD_NAME_GAP

static String FIELD_NAME_PARTITION_KEYS

Constructor Summary

Constructors
Constructor Description

SessionWindowSpec(Duration gap, int[] partitionKeyIndices)

Method Summary

All Methods Instance Methods Concrete Methods
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 Detail
  - 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 Detail
  - SessionWindowSpec
```
public SessionWindowSpec(Duration gap,
                         int[] partitionKeyIndices)
```
- Method Detail
  - 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