org.apache.shardingsphere.infra.optimize.converter.segment.orderby.item

类 ColumnOrderByItemConverter

java.lang.Object

org.apache.shardingsphere.infra.optimize.converter.segment.orderby.item.ColumnOrderByItemConverter

所有已实现的接口:

SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment,org.apache.calcite.sql.SqlNode>

public final class ColumnOrderByItemConverter
extends Object
implements SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment,org.apache.calcite.sql.SqlNode>

Column of order by item converter.

构造器概要

构造器

构造器和说明
ColumnOrderByItemConverter()

方法概要

限定符和类型	方法和说明
Optional<org.apache.calcite.sql.SqlNode>	convertToSQLNode(org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment segment) Convert SQL segment to SQL node.
Optional<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment>	convertToSQLSegment(org.apache.calcite.sql.SqlNode sqlNode) Convert SQL node to SQL segment.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.shardingsphere.infra.optimize.converter.segment.SQLSegmentConverter

getStartIndex, getStopIndex

构造器详细资料

ColumnOrderByItemConverter

public ColumnOrderByItemConverter()

方法详细资料

convertToSQLNode

public Optional<org.apache.calcite.sql.SqlNode> convertToSQLNode(org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment segment)

从接口复制的说明: SQLSegmentConverter

Convert SQL segment to SQL node.

指定者:

convertToSQLNode 在接口中 SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment,org.apache.calcite.sql.SqlNode>

参数:

segment - SQL segment be to converted

返回:

converted SQL node

convertToSQLSegment

public Optional<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment> convertToSQLSegment(org.apache.calcite.sql.SqlNode sqlNode)

从接口复制的说明: SQLSegmentConverter

Convert SQL node to SQL segment.

指定者:

convertToSQLSegment 在接口中 SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.order.item.ColumnOrderByItemSegment,org.apache.calcite.sql.SqlNode>

参数:

sqlNode - SQL node be to converted

返回:

converted SQL segment