io.cdap.cdap.etl.api.aggregation

Class WindowAggregationDefinition

java.lang.Object

io.cdap.cdap.etl.api.aggregation.WindowAggregationDefinition

public class WindowAggregationDefinition
extends Object

Specifies how a window aggregation operation should be executed.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WindowAggregationDefinition.Builder Builds a WindowAggregationDefinition using fields to partition and fields to select.
static class	WindowAggregationDefinition.OrderBy An enumeration that specifies the type of order by
static class	WindowAggregationDefinition.OrderByExpression A class to combine an Expression and a WindowAggregationDefinition.OrderBy into a single object.
static class	WindowAggregationDefinition.WindowFrameType An enumeration that specifies the type of windowFrame

Method Summary

Modifier and Type	Method and Description
static WindowAggregationDefinition.Builder	builder()
String	getFollowing()
List<WindowAggregationDefinition.OrderByExpression>	getOrderByExpressions()
List<Expression>	getPartitionExpressions()
String	getPreceding()
Map<String,Expression>	getSelectExpressions()
boolean	getUnboundedFollowing()
boolean	getUnboundedPreceding()
WindowAggregationDefinition.WindowFrameType	getWindowFrameType()

Methods inherited from class java.lang.Object

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

Method Detail

builder

public static WindowAggregationDefinition.Builder builder()

Returns:

A builder to create a WindowAggregationDefinition.

getUnboundedPreceding

@Nullable
public boolean getUnboundedPreceding()

Returns:

value of unbounded preceding field of WindowAggregationDefinition.

getUnboundedFollowing

@Nullable
public boolean getUnboundedFollowing()

Returns:

value of UnboundedFollowing field of WindowAggregationDefinition.

getPreceding

@Nullable
public String getPreceding()

Returns:

value of preceding field of WindowAggregationDefinition.

getFollowing

@Nullable
public String getFollowing()

Returns:

value of following field of WindowAggregationDefinition.

getSelectExpressions

public Map<String,Expression> getSelectExpressions()

Returns:

select expressions of WindowAggregationDefinition.

getWindowFrameType

public WindowAggregationDefinition.WindowFrameType getWindowFrameType()

Returns:

window frame type value of WindowAggregationDefinition.

getOrderByExpressions

@Nullable
public List<WindowAggregationDefinition.OrderByExpression> getOrderByExpressions()

Returns:

order by expressions of WindowAggregationDefinition.

getPartitionExpressions

public List<Expression> getPartitionExpressions()

Returns:

partition expressions of WindowAggregationDefinition.