com.alibaba.druid.sql.ast.expr

Class SQLNullExpr

java.lang.Object

com.alibaba.druid.sql.ast.SQLObjectImpl

com.alibaba.druid.sql.ast.SQLExprImpl

com.alibaba.druid.sql.ast.expr.SQLNullExpr

All Implemented Interfaces:

SQLLiteralExpr, SQLValuableExpr, SQLExpr, SQLObject, Cloneable

public class SQLNullExpr
extends SQLExprImpl
implements SQLLiteralExpr, SQLValuableExpr

Constructor Summary

Constructors

Constructor and Description
SQLNullExpr()

Method Summary

Modifier and Type	Method and Description
SQLNullExpr	clone()
boolean	equals(Object o)
Object	getValue()
int	hashCode()
void	output(StringBuffer buf)

Methods inherited from class com.alibaba.druid.sql.ast.SQLExprImpl

computeDataType

Methods inherited from class com.alibaba.druid.sql.ast.SQLObjectImpl

accept, addAfterComment, addAfterComment, addBeforeComment, addBeforeComment, getAfterCommentsDirect, getAttribute, getAttributes, getAttributesDirect, getBeforeCommentsDirect, getParent, hasAfterComment, hasBeforeComment, putAttribute, setParent, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.alibaba.druid.sql.ast.SQLExpr

computeDataType

Methods inherited from interface com.alibaba.druid.sql.ast.SQLObject

accept, addAfterComment, addAfterComment, addBeforeComment, addBeforeComment, getAfterCommentsDirect, getAttribute, getAttributes, getAttributesDirect, getBeforeCommentsDirect, getParent, hasAfterComment, hasBeforeComment, putAttribute, setParent

Constructor Detail

SQLNullExpr

public SQLNullExpr()

Method Detail

output

public void output(StringBuffer buf)

Specified by:

output in interface SQLObject

Overrides:

output in class SQLObjectImpl

hashCode

public int hashCode()

Specified by:

hashCode in class SQLExprImpl

equals

public boolean equals(Object o)

Specified by:

equals in class SQLExprImpl

getValue

public Object getValue()

Specified by:

getValue in interface SQLValuableExpr

clone

public SQLNullExpr clone()

Specified by:

clone in interface SQLLiteralExpr

Specified by:

clone in interface SQLExpr

Specified by:

clone in interface SQLObject

Specified by:

clone in class SQLExprImpl