/*
* Licensed 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 com.facebook.presto.sql.planner.optimizations;
import java.util.function.Predicate;
public class Predicates
{
private Predicates() {}
public static <T> Predicate<T> isInstanceOfAny(Class... classes)
{
Predicate predicate = alwaysFalse();
for (Class clazz : classes) {
predicate = predicate.or(clazz::isInstance);
}
return predicate;
}
public static <T> Predicate<T> alwaysTrue()
{
return x -> true;
}
public static <T> Predicate<T> alwaysFalse()
{
return x -> false;
}
}