org.hibernate.criterion
Class NullExpression

java.lang.Object
  extended by org.hibernate.criterion.NullExpression
All Implemented Interfaces:
Serializable, Criterion

public class NullExpression
extends Object
implements Criterion

Constrains a property to be null

Author:
Gavin King
See Also:
Serialized Form

Constructor Summary
protected NullExpression(String propertyName)
           
 
Method Summary
 TypedValue[] getTypedValues(Criteria criteria, CriteriaQuery criteriaQuery)
          Return typed values for all parameters in the rendered SQL fragment
 String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
          Render the SQL fragment
 String toString()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

NullExpression

protected NullExpression(String propertyName)
Method Detail

toSqlString

public String toSqlString(Criteria criteria,
                          CriteriaQuery criteriaQuery)
                   throws HibernateException
Description copied from interface: Criterion
Render the SQL fragment

Specified by:
toSqlString in interface Criterion
Parameters:
criteria - The local criteria
criteriaQuery - The overal criteria query
Returns:
The generated SQL fragment
Throws:
HibernateException - Problem during rendering.

getTypedValues

public TypedValue[] getTypedValues(Criteria criteria,
                                   CriteriaQuery criteriaQuery)
                            throws HibernateException
Description copied from interface: Criterion
Return typed values for all parameters in the rendered SQL fragment

Specified by:
getTypedValues in interface Criterion
Parameters:
criteria - The local criteria
criteriaQuery - The overal criteria query
Returns:
The types values (for binding)
Throws:
HibernateException - Problem determining types.

toString

public String toString()
Overrides:
toString in class Object


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