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

Class AbstractFromWhereExtractor

java.lang.Object

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

All Implemented Interfaces:

OptionalSQLSegmentExtractor, SQLSegmentExtractor

Direct Known Subclasses:

DeleteFromWhereExtractor, FromWhereExtractor, UpdateSetWhereExtractor

public abstract class AbstractFromWhereExtractor
extends Object
implements OptionalSQLSegmentExtractor

Abstract from where extractor.

Author:

duhongjun

Constructor Summary

Constructors

Constructor and Description
AbstractFromWhereExtractor()

Method Summary

Modifier and Type	Method and Description
protected FromWhereSegment	createSegment()
com.google.common.base.Optional<FromWhereSegment>	extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode) Extract SQL segment from SQL AST.
com.google.common.base.Optional<FromWhereSegment>	extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode, org.antlr.v4.runtime.ParserRuleContext rootNode) Extract SQL segment from SQL AST.
protected abstract com.google.common.base.Optional<org.antlr.v4.runtime.ParserRuleContext>	extractTable(FromWhereSegment fromWhereSegment, org.antlr.v4.runtime.ParserRuleContext ancestorNode, Map<org.antlr.v4.runtime.ParserRuleContext,Integer> placeholderIndexes)
protected void	extractTableReference(FromWhereSegment fromWhereSegment, org.antlr.v4.runtime.ParserRuleContext tableReferenceNode, Map<org.antlr.v4.runtime.ParserRuleContext,Integer> placeholderIndexes)
protected void	fillTable(FromWhereSegment fromWhereSegment, org.antlr.v4.runtime.ParserRuleContext joinOrTableFactorNode, Map<org.antlr.v4.runtime.ParserRuleContext,Integer> placeholderIndexes)
protected void	fillTableResult(FromWhereSegment fromWhereSegment, TableSegment tableSegment)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractFromWhereExtractor

public AbstractFromWhereExtractor()

Method Detail

extract

public com.google.common.base.Optional<FromWhereSegment> 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

extract

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

Extract SQL segment from SQL AST.

Parameters:

ancestorNode - ancestor node of AST

rootNode - root node of AST

Returns:

SQL segment

createSegment

protected FromWhereSegment createSegment()

extractTable

protected abstract com.google.common.base.Optional<org.antlr.v4.runtime.ParserRuleContext> extractTable(FromWhereSegment fromWhereSegment,
                                                                                                        org.antlr.v4.runtime.ParserRuleContext ancestorNode,
                                                                                                        Map<org.antlr.v4.runtime.ParserRuleContext,Integer> placeholderIndexes)

extractTableReference

protected void extractTableReference(FromWhereSegment fromWhereSegment,
                                     org.antlr.v4.runtime.ParserRuleContext tableReferenceNode,
                                     Map<org.antlr.v4.runtime.ParserRuleContext,Integer> placeholderIndexes)

fillTable

protected void fillTable(FromWhereSegment fromWhereSegment,
                         org.antlr.v4.runtime.ParserRuleContext joinOrTableFactorNode,
                         Map<org.antlr.v4.runtime.ParserRuleContext,Integer> placeholderIndexes)

fillTableResult

protected void fillTableResult(FromWhereSegment fromWhereSegment,
                               TableSegment tableSegment)