Package net.ontopia.persistence.query.sql

Class SQLIsNull

java.lang.Object

net.ontopia.persistence.query.sql.SQLIsNull

All Implemented Interfaces:

SQLExpressionIF

public class SQLIsNull
extends Object
implements SQLExpressionIF

INTERNAL: SQL condition: is null

A NULL condition tests for nulls.

Field Summary

Fields

Modifier and Type	Field	Description
protected SQLValueIF	value

Fields inherited from interface net.ontopia.persistence.query.sql.SQLExpressionIF

AND, EQUALS, EXISTS, FALSE, IN, IS_NULL, JOIN, LIKE, NOT, NOT_EQUALS, OR, SET_OPERATION, VALUE_EXPRESSION, VERBATIM

Constructor Summary

Constructors

Constructor	Description
SQLIsNull(SQLValueIF value)

Method Summary

Modifier and Type	Method	Description
int	getType()	INTERNAL: Returns the expression type.
SQLValueIF	getValue()
void	setValue(SQLValueIF value)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

value

protected SQLValueIF value

Constructor Details

SQLIsNull

public SQLIsNull(SQLValueIF value)

Method Details

getType

public int getType()

Description copied from interface: SQLExpressionIF

INTERNAL: Returns the expression type. The type is represented by one of the constants in the SQLExpressionIF interface.

Specified by:

getType in interface SQLExpressionIF

getValue

public SQLValueIF getValue()

setValue

public void setValue(SQLValueIF value)

toString

public String toString()

Overrides:

toString in class Object