/**
* 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 org.apache.ambari.server.controller.spi.Resource;
/**
* Predicate that checks if a given value is less than a {@link Resource} property.
*/
public class LessPredicate<T> extends ComparisonPredicate<T> {
/**
* Construct a LessPredicate.
*
* @param propertyId the property id
* @param value the value
*
* @throws IllegalArgumentException if the given value is null
*/
public LessPredicate(String propertyId, Comparable<T> value) {
super(propertyId, value);
if (value == null) {
throw new IllegalArgumentException("Value can't be null.");
}
}
@Override
public boolean evaluate(Resource resource) {
Object propertyValue = resource.getPropertyValue(getPropertyId());
return propertyValue != null && compareValueTo(propertyValue) > 0;
}
@Override
public String getOperator() {
return "<";
}
@Override
public ComparisonPredicate<T> copy(String propertyId) {
return new LessPredicate<>(propertyId, getValue());
}
}