io.shardingsphere.core.parsing.antlr.extractor.impl

类 PredicateExtractor

java.lang.Object

io.shardingsphere.core.parsing.antlr.extractor.impl.PredicateExtractor

所有已实现的接口:

OptionalSQLSegmentExtractor, SQLSegmentExtractor

public final class PredicateExtractor
extends Object
implements OptionalSQLSegmentExtractor

Predicate extractor.

作者:

duhongjun

构造器概要

构造器

构造器和说明
PredicateExtractor()

方法概要

限定符和类型	方法和说明
com.google.common.base.Optional<PredicateSegment>	extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode) Extract SQL segment from SQL AST.
com.google.common.base.Optional<OrConditionSegment>	extractCondition(Map<org.antlr.v4.runtime.ParserRuleContext,Integer> questionNodeIndexMap, org.antlr.v4.runtime.ParserRuleContext exprNode) Extract SQL segment from SQL AST.

从类继承的方法 java.lang.Object

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

构造器详细资料

PredicateExtractor

public PredicateExtractor()

方法详细资料

extract

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

从接口复制的说明: OptionalSQLSegmentExtractor

Extract SQL segment from SQL AST.

指定者:

extract 在接口中 OptionalSQLSegmentExtractor

参数:

ancestorNode - ancestor node of AST

返回:

SQL segment

extractCondition

public com.google.common.base.Optional<OrConditionSegment> extractCondition(Map<org.antlr.v4.runtime.ParserRuleContext,Integer> questionNodeIndexMap,
                                                                            org.antlr.v4.runtime.ParserRuleContext exprNode)

Extract SQL segment from SQL AST.

参数:

questionNodeIndexMap - question node map

exprNode - expression node of AST

返回:

or condition