| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * 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 |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| 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; |
| } |
| } |