org.apache.openjpa.persistence.query
Class IsEmptyExpression
java.lang.Object
   org.apache.openjpa.persistence.query.AbstractVisitable
org.apache.openjpa.persistence.query.AbstractVisitable
       org.apache.openjpa.persistence.query.UnaryExpressionPredicate
org.apache.openjpa.persistence.query.UnaryExpressionPredicate
           org.apache.openjpa.persistence.query.IsEmptyExpression
org.apache.openjpa.persistence.query.IsEmptyExpression
- All Implemented Interfaces: 
- Serializable, Predicate, Visitable
- public class IsEmptyExpression 
- extends UnaryExpressionPredicate
- See Also:
- Serialized Form
 
 
 
 
 
 
 
| Methods inherited from class java.lang.Object | 
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
 
 
IsEmptyExpression
public IsEmptyExpression(Expression op)
asExpression
public String asExpression(AliasContext ctx)
- Description copied from interface: Visitable
- Get a JPQL fragment as used in WHERE clause.
 
- 
- Specified by:
- asExpressionin interface- Visitable
- Overrides:
- asExpressionin class- UnaryExpressionPredicate
 
- 
 
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