Package me.danwi.sqlex.core.query.expression

Class IsNullExpression

java.lang.Object

me.danwi.sqlex.core.query.expression.IsNullExpression

All Implemented Interfaces:

Expression, NotVariantExpression

public class IsNullExpression
extends Object
implements NotVariantExpression

Constructor Summary

Constructors

Constructor	Description
IsNullExpression(Expression expression)

Method Summary

Modifier and Type	Method	Description
String	toNotSQL()	表达式转换成SQL片段,在Not语境中
String	toSQL()	表达式转换成SQL片段

Methods inherited from class java.lang.Object

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

Methods inherited from interface me.danwi.sqlex.core.query.expression.Expression

add, and, div, eq, gt, gte, in, isNotNull, isNull, like, lt, lte, mul, ne, notIn, notLike, or, sub

Constructor Details

IsNullExpression

public IsNullExpression(Expression expression)

Method Details

toSQL

public String toSQL()

Description copied from interface: Expression

表达式转换成SQL片段

Specified by:

toSQL in interface Expression

Returns:

SQL判断

toNotSQL

public String toNotSQL()

Description copied from interface: NotVariantExpression

表达式转换成SQL片段,在Not语境中

Specified by:

toNotSQL in interface NotVariantExpression

Returns:

SQL片段