org.apache.openjpa.persistence.query.LogicalPredicate Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
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*/
package org.apache.openjpa.persistence.query;
/**
* Logical Predicate combines two predicates with a logical operator.
*
* @author Pinaki Poddar
*
*/
public class LogicalPredicate extends AbstractVisitable
implements Predicate, Visitable {
private final Predicate _p1;
private final Predicate _p2;
private final ConditionalOperator _op;
private final ConditionalOperator _nop;
public LogicalPredicate(Predicate p1, ConditionalOperator op,
ConditionalOperator nop, Predicate p2) {
_p1 = p1;
_p2 = p2;
_op = op;
_nop = nop;
}
public Predicate and(Predicate predicate) {
return new AndPredicate(this, predicate);
}
public Predicate or(Predicate predicate) {
return new OrPredicate(this, predicate);
}
public Predicate not() {
return new LogicalPredicate(_p1.not(), _nop, _op, _p2.not());
}
public String asExpression(AliasContext ctx) {
return OPEN_BRACE + ((Visitable)_p1).asExpression(ctx) + SPACE + _op +
SPACE + ((Visitable)_p2).asExpression(ctx) + CLOSE_BRACE;
}
}