1 /*
2 * Copyright 2018 SPF4J.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.spf4j.failsafe;
17
18 import java.util.concurrent.Callable;
19 import java.util.function.BiFunction;
20 import javax.annotation.Nonnull;
21 import javax.annotation.Nullable;
22
23 /**
24 * Chainable Result predicate.
25 * This predicate will not return a RetryDecision (null) when if want to deffer the retry decision.
26 * @author Zoltan Farkas
27 */
28 @FunctionalInterface
29 public interface PartialResultRetryPredicate<T, C extends Callable<? extends T>>
30 extends BiFunction<T, C, RetryDecision<T, C>> {
31
32 @Nullable
33 RetryDecision<T, C> getDecision(@Nonnull T value, @Nonnull C what);
34
35 @Override
36 @Nullable
37 default RetryDecision<T, C> apply(final T t, final C u) {
38 return getDecision(t, u);
39 }
40
41 }