org.apache.shardingsphere.core.parse.antlr.extractor.impl.dml.select.item

Class StarSelectItemSegmentExtractor

java.lang.Object

org.apache.shardingsphere.core.parse.antlr.extractor.impl.dml.select.item.StarSelectItemSegmentExtractor

All Implemented Interfaces:

OptionalSQLSegmentExtractor, SQLSegmentExtractor

public final class StarSelectItemSegmentExtractor
extends Object
implements OptionalSQLSegmentExtractor

Star select item segment extractor.

Author:

zhangliang

Constructor Summary

Constructors

Constructor and Description
StarSelectItemSegmentExtractor()

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Optional<StarSelectItemSegment>	extract(org.antlr.v4.runtime.ParserRuleContext expressionNode) 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

StarSelectItemSegmentExtractor

public StarSelectItemSegmentExtractor()

Method Detail

extract

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

Description copied from interface: OptionalSQLSegmentExtractor

Extract SQL segment from SQL AST.

Specified by:

extract in interface OptionalSQLSegmentExtractor

Parameters:

expressionNode - ancestor node of AST

Returns:

SQL segment