Package org.apache.shardingsphere.infra.binder.segment.select.projection.impl

Class AggregationProjection

java.lang.Object

org.apache.shardingsphere.infra.binder.segment.select.projection.impl.AggregationProjection

All Implemented Interfaces:

Projection

Direct Known Subclasses:

AggregationDistinctProjection

public class AggregationProjection
extends Object
implements Projection

Aggregation projection.

Constructor Summary

Constructors

Constructor	Description
AggregationProjection()

Method Summary

Modifier and Type	Method	Description
Projection	cloneWithOwner(org.apache.shardingsphere.sql.parser.sql.common.value.identifier.IdentifierValue owner)	Clone with owner.
Optional<String>	getAlias()	Get alias.
String	getColumnLabel()	Get column label.
String	getExpression()	Get expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

AggregationProjection

public AggregationProjection()

Method Detail

getExpression

public final String getExpression()

Description copied from interface: Projection

Get expression.

Specified by:

getExpression in interface Projection

Returns:

expression

getAlias

public final Optional<String> getAlias()

Description copied from interface: Projection

Get alias.

Specified by:

getAlias in interface Projection

Returns:

alias

getColumnLabel

public String getColumnLabel()

Get column label.

Specified by:

getColumnLabel in interface Projection

Returns:

column label

cloneWithOwner

public Projection cloneWithOwner(org.apache.shardingsphere.sql.parser.sql.common.value.identifier.IdentifierValue owner)

Description copied from interface: Projection

Clone with owner.

Specified by:

cloneWithOwner in interface Projection

Parameters:

owner - owner identifier

Returns:

new projection