org.apache.shardingsphere.sql.parser.core.extractor.impl.dml.select.item.impl

Class FunctionSelectItemExtractor

java.lang.Object

org.apache.shardingsphere.sql.parser.core.extractor.impl.dml.select.item.impl.FunctionSelectItemExtractor

All Implemented Interfaces:

OptionalSQLSegmentExtractor, SQLSegmentExtractor

public final class FunctionSelectItemExtractor
extends Object
implements OptionalSQLSegmentExtractor

Function select item extractor.

Author:

zhangliang

Constructor Summary

Constructors

Constructor and Description
FunctionSelectItemExtractor()

Method Summary

Modifier and Type	Method and Description
com.google.common.base.Optional<SelectItemSegment>	extract(org.antlr.v4.runtime.ParserRuleContext expressionNode, Map<org.antlr.v4.runtime.ParserRuleContext,Integer> parameterMarkerIndexes) 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

FunctionSelectItemExtractor

public FunctionSelectItemExtractor()

Method Detail

extract

public com.google.common.base.Optional<SelectItemSegment> extract(org.antlr.v4.runtime.ParserRuleContext expressionNode,
                                                                  Map<org.antlr.v4.runtime.ParserRuleContext,Integer> parameterMarkerIndexes)

Description copied from interface: OptionalSQLSegmentExtractor

Extract SQL segment from SQL AST.

Specified by:

extract in interface OptionalSQLSegmentExtractor

Parameters:

expressionNode - ancestor node of AST

parameterMarkerIndexes - parameter marker indexes

Returns:

SQL segment