org.apache.openjpa.persistence.query
Class UnaryExpressionPredicate
java.lang.Object
org.apache.openjpa.persistence.query.AbstractVisitable
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()
getOperator
public UnaryConditionalOperator getOperator()
and
public Predicate and(Predicate predicate)
- Description copied from interface:
Predicate
- Creates an AND of the predicate with the argument.
- Specified by:
and in 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:
or in 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:
not in 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:
asExpression in interface Visitable- Overrides:
asExpression in class AbstractVisitable
Copyright © 2006-2013 Apache Software Foundation. All Rights Reserved.