/*
* 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.spi;
import com.facebook.presto.spi.predicate.NullableValue;
import com.facebook.presto.spi.predicate.TupleDomain;
import java.util.Map;
import java.util.function.Predicate;
import static java.util.Objects.requireNonNull;
public class Constraint<T>
{
private final TupleDomain<T> summary;
private final Predicate<Map<T, NullableValue>> predicate;
public static <V> Constraint<V> alwaysTrue()
{
return new Constraint<>(TupleDomain.<V>all(), bindings -> true);
}
public Constraint(TupleDomain<T> summary, Predicate<Map<T, NullableValue>> predicate)
{
requireNonNull(summary, "summary is null");
requireNonNull(predicate, "predicate is null");
this.summary = summary;
this.predicate = predicate;
}
public TupleDomain<T> getSummary()
{
return summary;
}
public Predicate<Map<T, NullableValue>> predicate()
{
return predicate;
}
}