/**
* 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.controller.predicate;
import java.util.Set;
import org.apache.ambari.server.controller.spi.Predicate;
import org.apache.ambari.server.controller.utilities.PredicateHelper;
/**
* Predicate that operates on one other predicate.
*/
public abstract class UnaryPredicate implements BasePredicate {
private final Predicate predicate;
public UnaryPredicate(Predicate predicate) {
assert(predicate != null);
this.predicate = predicate;
}
public Predicate getPredicate() {
return predicate;
}
@Override
public Set<String> getPropertyIds() {
return PredicateHelper.getPropertyIds(predicate);
}
@Override
public void accept(PredicateVisitor visitor) {
visitor.acceptUnaryPredicate(this);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof UnaryPredicate)) return false;
UnaryPredicate that = (UnaryPredicate) o;
return predicate.equals(that.predicate);
}
@Override
public int hashCode() {
return predicate.hashCode();
}
public abstract String getOperator();
// ----- Object overrides --------------------------------------------------
@Override
public String toString() {
return getOperator() + "(" + getPredicate() + ")";
}
}