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

Class ProjectionsContext

java.lang.Object

org.apache.shardingsphere.infra.binder.segment.select.projection.ProjectionsContext

public final class ProjectionsContext
extends Object

Projections context.

Constructor Summary

Constructors

Constructor	Description
ProjectionsContext(int startIndex, int stopIndex, boolean distinctRow, Collection<Projection> projections)

Method Summary

Modifier and Type	Method	Description
Optional<String>	findAlias(String projectionName)	Find alias.
Optional<Integer>	findProjectionIndex(String projectionName)	Find projection index.
List<AggregationProjection>	getAggregationProjections()	Get aggregation projections.
boolean	isUnqualifiedShorthandProjection()	Judge is unqualified shorthand projection or not.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectionsContext

public ProjectionsContext(int startIndex,
                          int stopIndex,
                          boolean distinctRow,
                          Collection<Projection> projections)

Method Detail

isUnqualifiedShorthandProjection

public boolean isUnqualifiedShorthandProjection()

Judge is unqualified shorthand projection or not.

Returns:

is unqualified shorthand projection or not

findAlias

public Optional<String> findAlias(String projectionName)

Find alias.

Parameters:

projectionName - projection name

Returns:

projection alias

findProjectionIndex

public Optional<Integer> findProjectionIndex(String projectionName)

Find projection index.

Parameters:

projectionName - projection name

Returns:

projection index

getAggregationProjections

public List<AggregationProjection> getAggregationProjections()

Get aggregation projections.

Returns:

aggregation projections