com.hazelcast.jet.function.DistributedPredicate Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.jet.function;
import java.io.Serializable;
import java.util.Objects;
import java.util.function.Predicate;
import static com.hazelcast.util.Preconditions.checkNotNull;
/**
* {@code Serializable} variant of {@link Predicate
* java.util.function.Predicate}.
*/
@FunctionalInterface
public interface DistributedPredicate extends Predicate, Serializable {
/**
* {@code Serializable} variant of
* {@link Predicate#isEqual(Object) java.util.function.Predicate#isEqual(Object)}.
*/
static DistributedPredicate isEqual(Object other) {
return null == other ? Objects::isNull : other::equals;
}
/**
* {@code Serializable} variant of
* {@link Predicate#and(Predicate) java.util.function.Predicate#and(Predicate)}.
*/
default DistributedPredicate and(DistributedPredicate other) {
checkNotNull(other, "other");
return t -> test(t) && other.test(t);
}
/**
* {@code Serializable} variant of
* {@link Predicate#negate()}.
*/
@Override
default DistributedPredicate negate() {
return t -> !test(t);
}
/**
* {@code Serializable} variant of
* {@link Predicate#or(Predicate) java.util.function.Predicate#or(Predicate)}.
*/
default DistributedPredicate or(DistributedPredicate other) {
checkNotNull(other, "other");
return t -> test(t) || other.test(t);
}
}