org.apache.shardingsphere.sqlfederation.optimizer.converter.segment.projection.impl

Class ExpressionProjectionConverter

java.lang.Object

org.apache.shardingsphere.sqlfederation.optimizer.converter.segment.projection.impl.ExpressionProjectionConverter

All Implemented Interfaces:

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

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

Expression projection converter.

Constructor Summary

Constructors

Constructor and Description
ExpressionProjectionConverter()

Method Summary

Modifier and Type	Method and Description
Optional<org.apache.calcite.sql.SqlNode>	convert(org.apache.shardingsphere.sql.parser.sql.common.segment.dml.item.ExpressionProjectionSegment segment) Convert.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionProjectionConverter

public ExpressionProjectionConverter()

Method Detail

convert

public Optional<org.apache.calcite.sql.SqlNode> convert(org.apache.shardingsphere.sql.parser.sql.common.segment.dml.item.ExpressionProjectionSegment segment)

Description copied from interface: SQLSegmentConverter

Convert.

Specified by:

convert in interface SQLSegmentConverter<org.apache.shardingsphere.sql.parser.sql.common.segment.dml.item.ExpressionProjectionSegment,org.apache.calcite.sql.SqlNode>

Parameters:

segment - SQL segment be to converted

Returns:

converted SQL node