branch-1.2/ambari-server/src/main/java/org/apache/ambari/server/api/predicate/operators/NotOperator.java

/**
 * 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.ambari.server.api.predicate.operators;

import org.apache.ambari.server.controller.predicate.BasePredicate;
import org.apache.ambari.server.controller.predicate.NotPredicate;
import org.apache.ambari.server.controller.spi.Predicate;

/**
 * Not unary operator implementation.
 */
public class NotOperator extends AbstractOperator implements LogicalOperator {

  /**
   * Constructor.
   *
   * @param ctxPrecedence  the precedence value of the current context
   */
  public NotOperator(int ctxPrecedence) {
    super(ctxPrecedence);
  }

  @Override
  public TYPE getType() {
    return TYPE.NOT;
  }

  @Override
  public String getName() {
    return "NotOperator";
  }

  @Override
  public int getBasePrecedence() {
    return 3;
  }

  @Override
  public Predicate toPredicate(Predicate left, Predicate right) {
    return new NotPredicate((BasePredicate) right);
  }

  @Override
  public String toString() {
    return getName() + "[precedence=" + getPrecedence() + "]";
  }
}