com.arangodb.shaded.vertx.core.impl.future.FutureBase Maven / Gradle / Ivy
/*
* Copyright (c) 2011-2019 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
* which is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
*/
package com.arangodb.shaded.vertx.core.impl.future;
import com.arangodb.shaded.vertx.core.AsyncResult;
import com.arangodb.shaded.vertx.core.Future;
import com.arangodb.shaded.vertx.core.Handler;
import com.arangodb.shaded.vertx.core.impl.ContextInternal;
import java.util.Objects;
import java.util.function.Function;
/**
* Future base implementation.
*
* @author Julien Viet
*/
abstract class FutureBase implements FutureInternal {
protected final ContextInternal context;
/**
* Create a future that hasn't completed yet
*/
FutureBase() {
this(null);
}
/**
* Create a future that hasn't completed yet
*/
FutureBase(ContextInternal context) {
this.context = context;
}
public final ContextInternal context() {
return context;
}
protected final void emitSuccess(T value, Listener listener) {
if (context != null && !context.isRunningOnContext()) {
context.execute(() -> {
ContextInternal prev = context.beginDispatch();
try {
listener.onSuccess(value);
} finally {
context.endDispatch(prev);
}
});
} else {
listener.onSuccess(value);
}
}
protected final void emitFailure(Throwable cause, Listener listener) {
if (context != null && !context.isRunningOnContext()) {
context.execute(() -> {
ContextInternal prev = context.beginDispatch();
try {
listener.onFailure(cause);
} finally {
context.endDispatch(prev);
}
});
} else {
listener.onFailure(cause);
}
}
@Override
public Future compose(Function> successMapper, Function> failureMapper) {
Objects.requireNonNull(successMapper, "No null success mapper accepted");
Objects.requireNonNull(failureMapper, "No null failure mapper accepted");
Composition operation = new Composition<>(context, successMapper, failureMapper);
addListener(operation);
return operation;
}
@Override
public Future transform(Function, Future> mapper) {
Objects.requireNonNull(mapper, "No null mapper accepted");
Transformation operation = new Transformation<>(context, this, mapper);
addListener(operation);
return operation;
}
@Override
public Future eventually(Function> mapper) {
Objects.requireNonNull(mapper, "No null mapper accepted");
Eventually operation = new Eventually<>(context, mapper);
addListener(operation);
return operation;
}
@Override
public Future map(Function mapper) {
Objects.requireNonNull(mapper, "No null mapper accepted");
Mapping operation = new Mapping<>(context, mapper);
addListener(operation);
return operation;
}
@Override
public Future map(V value) {
FixedMapping transformation = new FixedMapping<>(context, value);
addListener(transformation);
return transformation;
}
@Override
public Future otherwise(Function mapper) {
Objects.requireNonNull(mapper, "No null mapper accepted");
Otherwise transformation = new Otherwise<>(context, mapper);
addListener(transformation);
return transformation;
}
@Override
public Future otherwise(T value) {
FixedOtherwise operation = new FixedOtherwise<>(context, value);
addListener(operation);
return operation;
}
}