org.hibernate.criterion

Class AbstractEmptinessExpression

java.lang.Object

org.hibernate.criterion.AbstractEmptinessExpression

All Implemented Interfaces:

Serializable, Criterion

Direct Known Subclasses:

EmptyExpression, NotEmptyExpression

public abstract class AbstractEmptinessExpression
extends Object
implements Criterion

Base expression implementation for (not) emptiness checking of collection properties

Author:

Steve Ebersole

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	propertyName

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractEmptinessExpression(String propertyName)

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	excludeEmpty() Should empty rows be excluded?
protected QueryableCollection	getQueryableCollection(String entityName, String propertyName, SessionFactoryImplementor factory)
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

Field Detail

propertyName

protected final String propertyName

Constructor Detail

AbstractEmptinessExpression

protected AbstractEmptinessExpression(String propertyName)

Method Detail

excludeEmpty

protected abstract boolean excludeEmpty()

Should empty rows be excluded?

Returns:

true Indicates the expression should be 'exists'; false indicates 'not exists'

toSqlString

public final 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.

getQueryableCollection

protected QueryableCollection getQueryableCollection(String entityName,
                                                     String propertyName,
                                                     SessionFactoryImplementor factory)
                                              throws HibernateException

Throws:

HibernateException

getTypedValues

public final 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 final String toString()

Overrides:

toString in class Object