ResolvableFuture.java
/*
* Copyright 2018 The Android Open Source Project
*
* 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 androidx.concurrent.futures;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
import com.google.common.util.concurrent.ListenableFuture;
/**
* An AndroidX version of Guava's {@code SettableFuture}.
* <p>
* A {@link ListenableFuture} whose result can be set by a {@link #set(Object)}, {@link
* #setException(Throwable)} or {@link #setFuture(ListenableFuture)} call. It can also, like any
* other {@code Future}, be {@linkplain #cancel cancelled}.
* <p>
* If your needs are more complex than {@code ResolvableFuture} supports, use {@link
* AbstractResolvableFuture}, which offers an extensible version of the API.
*
* @hide
* @author Sven Mawson
*/
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP_PREFIX)
public final class ResolvableFuture<V> extends AbstractResolvableFuture<V> {
/**
* Creates a new {@code ResolvableFuture} that can be completed or cancelled by a later method
* call.
*/
public static <V> ResolvableFuture<V> create() {
return new ResolvableFuture<>();
}
@Override
public boolean set(@Nullable V value) {
return super.set(value);
}
@Override
public boolean setException(Throwable throwable) {
return super.setException(throwable);
}
@Override
public boolean setFuture(ListenableFuture<? extends V> future) {
return super.setFuture(future);
}
private ResolvableFuture() {
}
}