io.shardingsphere.core.parsing.antlr.extractor

接口 OptionalSQLSegmentExtractor

所有超级接口:

SQLSegmentExtractor

所有已知实现类:

ColumnDefinitionExtractor, ColumnSegmentExtractor, DropColumnExtractor, ExpressionExtractor, FromWhereExtractor, GroupByExtractor, IndexNameExtractor, LimitExtractor, MySQLAutoCommitValueExtractor, MySQLChangeColumnExtractor, MySQLColumnPositionExtractor, MySQLDropPrimaryKeyExtractor, OracleDropPrimaryKeyExtractor, OrderByExtractor, OutlinePrimaryKeyExtractor, PredicateExtractor, RenameColumnExtractor, RenameTableExtractor, SelectClauseExtractor, ShowParamExtractor, SQLServerAddIndexExtractor, SQLServerAddPrimaryKeyExtractor, SQLServerAutoCommitValueExtractor, SQLServerDropIndexExtractor, SubqueryExtractor, TableNameExtractor

public interface OptionalSQLSegmentExtractor
extends SQLSegmentExtractor

Optional SQL segment extractor.

作者:

zhangliang

方法概要

限定符和类型	方法和说明
com.google.common.base.Optional<? extends SQLSegment>	extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode) Extract SQL segment from SQL AST.

方法详细资料

extract

com.google.common.base.Optional<? extends SQLSegment> extract(org.antlr.v4.runtime.ParserRuleContext ancestorNode)

Extract SQL segment from SQL AST.

参数:

ancestorNode - ancestor node of AST

返回:

SQL segment