org.apache.shardingsphere.sql.parser.sql.common.util

类 ColumnExtractor

java.lang.Object

org.apache.shardingsphere.sql.parser.sql.common.util.ColumnExtractor

public final class ColumnExtractor
extends Object

Column extractor.

构造器概要

构造器

构造器和说明
ColumnExtractor()

方法概要

限定符和类型	方法和说明
static Optional<ColumnSegment>	extract(ExpressionSegment expression) Get left value if left value of expression is column segment.

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

ColumnExtractor

public ColumnExtractor()

方法详细资料

extract

public static Optional<ColumnSegment> extract(ExpressionSegment expression)

Get left value if left value of expression is column segment.

参数:

expression - expression segment

返回:

column segment