org.apache.shardingsphere.infra.federation.optimizer.converter.segment.groupby

Class GroupByConverter

java.lang.Object

org.apache.shardingsphere.infra.federation.optimizer.converter.segment.groupby.GroupByConverter

All Implemented Interfaces:

SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment,org.apache.calcite.sql.SqlNodeList>

public final class GroupByConverter
extends Object
implements SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment,org.apache.calcite.sql.SqlNodeList>

Group by converter.

Constructor Summary

Constructors

Constructor and Description
GroupByConverter()

Method Summary

Modifier and Type	Method and Description
Optional<org.apache.calcite.sql.SqlNodeList>	convertToSQLNode(org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment segment) Convert SQL segment to SQL node.
Optional<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment>	convertToSQLSegment(org.apache.calcite.sql.SqlNodeList sqlNodeList) Convert SQL node to SQL segment.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.shardingsphere.infra.federation.optimizer.converter.segment.SQLSegmentConverter

getStartIndex, getStopIndex

Constructor Detail

GroupByConverter

public GroupByConverter()

Method Detail

convertToSQLNode

public Optional<org.apache.calcite.sql.SqlNodeList> convertToSQLNode(org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment segment)

Description copied from interface: SQLSegmentConverter

Convert SQL segment to SQL node.

Specified by:

convertToSQLNode in interface SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment,org.apache.calcite.sql.SqlNodeList>

Parameters:

segment - SQL segment be to converted

Returns:

converted SQL node

convertToSQLSegment

public Optional<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment> convertToSQLSegment(org.apache.calcite.sql.SqlNodeList sqlNodeList)

Description copied from interface: SQLSegmentConverter

Convert SQL node to SQL segment.

Specified by:

convertToSQLSegment in interface SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.GroupBySegment,org.apache.calcite.sql.SqlNodeList>

Parameters:

sqlNodeList - SQL node be to converted

Returns:

converted SQL segment