org.apache.shardingsphere.core.parse.antlr.extractor.impl.ddl.column

Class RenameColumnDefinitionExtractor

java.lang.Object

org.apache.shardingsphere.core.parse.antlr.extractor.impl.ddl.column.RenameColumnDefinitionExtractor

All Implemented Interfaces:

OptionalSQLSegmentExtractor, SQLSegmentExtractor

public final class RenameColumnDefinitionExtractor
extends Object
implements OptionalSQLSegmentExtractor

Rename column definition extractor.

Author:

duhongjun

Constructor Summary

Constructors

Constructor and Description
RenameColumnDefinitionExtractor()

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Optional<RenameColumnSegment>	extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode) Extract SQL segment from SQL AST.

Methods inherited from class java.lang.Object

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

Constructor Detail

RenameColumnDefinitionExtractor

public RenameColumnDefinitionExtractor()

Method Detail

extract

public com.google.common.base.Optional<RenameColumnSegment> extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode)

Description copied from interface: OptionalSQLSegmentExtractor

Extract SQL segment from SQL AST.

Specified by:

extract in interface OptionalSQLSegmentExtractor

Parameters:

ancestorNode - ancestor node of AST

Returns:

SQL segment