com.solarmetric.rd.kodo.impl.jdbc.query.exp
Class Null

java.lang.Object
  |
  +--com.solarmetric.rd.kodo.impl.jdbc.query.exp.Constant
        |
        +--com.solarmetric.rd.kodo.impl.jdbc.query.exp.Null

All Implemented Interfaces:

JDBCValue, Value

public class Null

extends Constant

A literal null value in a JDOQL filter.

Constructor Summary

Null()

Method Summary

void	appendTo(com.solarmetric.rd.kodo.impl.jdbc.schema.SQLBuffer sql, int index) Append the SQL for this value to the given buffer.
void	calculateValue(com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm, java.util.Map params, com.solarmetric.rd.kodo.impl.jdbc.query.exp.JDBCValue other) Calculate and cache the SQL for this value.
java.lang.Object	getValue() Return the value of this constant.

Methods inherited from class com.solarmetric.rd.kodo.impl.jdbc.query.exp.Constant

appendIsEmpty, appendIsNotNull, appendIsNull, castTo, getDataStoreValue, getJoins, getSQLValue, initialize, isVariable, length

Methods inherited from class java.lang.Object

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

Constructor Detail

Null

public Null()

Method Detail

getValue

public java.lang.Object getValue()

Description copied from class: Constant

Return the value of this constant.

Specified by:

getValue in class Constant

calculateValue

public void calculateValue(com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm,
                           java.util.Map params,
                           com.solarmetric.rd.kodo.impl.jdbc.query.exp.JDBCValue other)

Description copied from interface: JDBCValue

Calculate and cache the SQL for this value.

appendTo

public void appendTo(com.solarmetric.rd.kodo.impl.jdbc.schema.SQLBuffer sql,
                     int index)

Description copied from interface: JDBCValue

Append the SQL for this value to the given buffer.