org.apache.flink.table.operations

Class WindowAggregateQueryOperation.ResolvedGroupWindow

java.lang.Object

org.apache.flink.table.operations.WindowAggregateQueryOperation.ResolvedGroupWindow

Enclosing class:

WindowAggregateQueryOperation

@Internal
public static class WindowAggregateQueryOperation.ResolvedGroupWindow
extends Object

Wrapper for resolved expressions of a GroupWindow.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType The type of window.

Method Summary

Modifier and Type	Method and Description
String	asSummaryString()
String	getAlias()
Optional<org.apache.flink.table.expressions.ValueLiteralExpression>	getGap() Gap of a WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SESSION window.
Optional<org.apache.flink.table.expressions.ValueLiteralExpression>	getSize() Size of a WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.TUMBLE or WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SLIDE window.
Optional<org.apache.flink.table.expressions.ValueLiteralExpression>	getSlide() Slide of WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SLIDE window.
org.apache.flink.table.expressions.FieldReferenceExpression	getTimeAttribute()
WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType	getType()
static WindowAggregateQueryOperation.ResolvedGroupWindow	sessionWindow(String alias, org.apache.flink.table.expressions.FieldReferenceExpression timeAttribute, org.apache.flink.table.expressions.ValueLiteralExpression gap)
static WindowAggregateQueryOperation.ResolvedGroupWindow	slidingWindow(String alias, org.apache.flink.table.expressions.FieldReferenceExpression timeAttribute, org.apache.flink.table.expressions.ValueLiteralExpression size, org.apache.flink.table.expressions.ValueLiteralExpression slide)
static WindowAggregateQueryOperation.ResolvedGroupWindow	tumblingWindow(String alias, org.apache.flink.table.expressions.FieldReferenceExpression timeAttribute, org.apache.flink.table.expressions.ValueLiteralExpression size)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

slidingWindow

public static WindowAggregateQueryOperation.ResolvedGroupWindow slidingWindow(String alias,
                                                                              org.apache.flink.table.expressions.FieldReferenceExpression timeAttribute,
                                                                              org.apache.flink.table.expressions.ValueLiteralExpression size,
                                                                              org.apache.flink.table.expressions.ValueLiteralExpression slide)

tumblingWindow

public static WindowAggregateQueryOperation.ResolvedGroupWindow tumblingWindow(String alias,
                                                                               org.apache.flink.table.expressions.FieldReferenceExpression timeAttribute,
                                                                               org.apache.flink.table.expressions.ValueLiteralExpression size)

sessionWindow

public static WindowAggregateQueryOperation.ResolvedGroupWindow sessionWindow(String alias,
                                                                              org.apache.flink.table.expressions.FieldReferenceExpression timeAttribute,
                                                                              org.apache.flink.table.expressions.ValueLiteralExpression gap)

getType

public WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType getType()

getTimeAttribute

public org.apache.flink.table.expressions.FieldReferenceExpression getTimeAttribute()

getAlias

public String getAlias()

getSlide

public Optional<org.apache.flink.table.expressions.ValueLiteralExpression> getSlide()

Slide of WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SLIDE window. Empty for other windows.

Returns:

slide of a slide window

getSize

public Optional<org.apache.flink.table.expressions.ValueLiteralExpression> getSize()

Size of a WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.TUMBLE or WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SLIDE window. Empty for WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SESSION window.

Returns:

size of a window

getGap

public Optional<org.apache.flink.table.expressions.ValueLiteralExpression> getGap()

Gap of a WindowAggregateQueryOperation.ResolvedGroupWindow.WindowType.SESSION window. Empty for other types of windows.

Returns:

gap of a session window

asSummaryString

public String asSummaryString()