org.apache.openjpa.persistence.query
Class UnaryExpressionPredicate
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
- All Implemented Interfaces: 
- Serializable, Predicate, Visitable
- Direct Known Subclasses: 
- ExistsExpression, IsEmptyExpression, IsNullExpression
-  class UnaryExpressionPredicate 
- extends AbstractVisitable- implements Predicate, Visitable
Unary Predicate results from an operator on an Expression.
- Author:
- Pinaki Poddar
 
 
 
 
 
| Methods inherited from class java.lang.Object | 
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
 
 
_e
protected final Expression _e
_op
protected final UnaryConditionalOperator _op
UnaryExpressionPredicate
public UnaryExpressionPredicate(Expression e,
                                UnaryConditionalOperator op,
                                UnaryConditionalOperator nop)
getOperand
public Expression getOperand()
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getOperator
public UnaryConditionalOperator getOperator()
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and
public Predicate and(Predicate predicate)
- Description copied from interface: Predicate
- Creates an AND of the predicate with the argument.
 
- 
- Specified by:
- andin interface- Predicate
 
- 
- Parameters:
- predicate- -
                  A simple or compound predicate
- Returns:
- the predicate that is the AND of the original simple or compound
         predicate and the argument.
 
or
public Predicate or(Predicate predicate)
- Description copied from interface: Predicate
- Creates an OR of the predicate with the argument.
 
- 
- Specified by:
- orin interface- Predicate
 
- 
- Parameters:
- predicate- -
                  A simple or compound predicate
- Returns:
- the predicate that is the OR of the original simple or compound
         predicate and the argument.
 
not
public Predicate not()
- Description copied from interface: Predicate
- Creates a negation of the predicate with the argument.
 
- 
- Specified by:
- notin interface- Predicate
 
- 
- Returns:
- the predicate that is the negation of the original simple or
         compound predicate.
 
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- AbstractVisitable
 
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