hu.akarnokd.rxjava3.operators.Maybes Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of rxjava3-extensions Show documentation
Show all versions of rxjava3-extensions Show documentation
RxJava 3.x extra sources, operators and components and ports of many 1.x companion libraries.
/*
* Copyright 2016-2019 David Karnok
*
* 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 hu.akarnokd.rxjava3.operators;
import org.reactivestreams.Publisher;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.functions.*;
import io.reactivex.rxjava3.internal.functions.ObjectHelper;
/**
* Additional operators in the form of {@link MaybeConverter}s,
* use {@link Maybe#to(MaybeConverter)}
* to apply the operators to an existing sequence.
*
* @see MaybeTransformers
* @since 0.20.2
*/
public final class Maybes {
/** Utility class. */
private Maybes() {
throw new IllegalStateException("No instances!");
}
/**
* Maps the terminal signals of the upstream into {@link CompletableSource}s and
* subscribes to it, relaying its terminal events to the downstream.
* @param the upstream success value type
* @param onSuccessHandler a function called with the upstream success value and should
* return a CompletableSource to continue with.
* @param onErrorHandler called when the upstream fails and should return the
* CompletableSource for the given Throwable instance to continue with.
* @param onCompleteHandler called when the upstream completes normally and should return
* the CompletableSource to continue with.
* @return the new MaybeConverter instance
* @since 0.20.2
*/
public static MaybeConverter flatMapCompletable(
Function onSuccessHandler,
Function onErrorHandler,
Supplier onCompleteHandler) {
ObjectHelper.requireNonNull(onSuccessHandler, "onSuccessHandler is null");
ObjectHelper.requireNonNull(onErrorHandler, "onErrorHandler is null");
ObjectHelper.requireNonNull(onCompleteHandler, "onCompleteHandler is null");
return new MaybeFlatMapSignalCompletable(null, onSuccessHandler, onErrorHandler, onCompleteHandler);
}
/**
* Maps the terminal signals of the upstream into {@link SingleSource}s and
* subscribes to it, relaying its terminal events to the downstream.
* @param the upstream success value type
* @param the element type of the mapped-in SingleSource
* @param onSuccessHandler a function called with the upstream success value and should
* return a SingleSource to continue with.
* @param onErrorHandler called when the upstream fails and should return the
* SingleSource for the given Throwable instance to continue with.
* @param onCompleteHandler called when the upstream completes normally and should return
* the SingleSource to continue with.
* @return the new MaybeConverter instance
* @since 0.20.2
*/
public static MaybeConverter> flatMapSingle(
Function> onSuccessHandler,
Function> onErrorHandler,
Supplier> onCompleteHandler) {
ObjectHelper.requireNonNull(onSuccessHandler, "onSuccessHandler is null");
ObjectHelper.requireNonNull(onErrorHandler, "onErrorHandler is null");
ObjectHelper.requireNonNull(onCompleteHandler, "onCompleteHandler is null");
return new MaybeFlatMapSignalSingle(null, onSuccessHandler, onErrorHandler, onCompleteHandler);
}
/**
* Maps the terminal signals of the upstream into {@link ObservableSource}s and
* subscribes to it, relaying its terminal events to the downstream.
* @param the upstream success value type
* @param the element type of the mapped-in ObservableSource
* @param onSuccessHandler a function called with the upstream success value and should
* return a ObservableSource to continue with.
* @param onErrorHandler called when the upstream fails and should return the
* ObservableSource for the given Throwable instance to continue with.
* @param onCompleteHandler called when the upstream completes normally and should return
* the ObservableSource to continue with.
* @return the new MaybeConverter instance
* @since 0.20.2
*/
public static MaybeConverter> flatMapObservable(
Function> onSuccessHandler,
Function> onErrorHandler,
Supplier> onCompleteHandler) {
ObjectHelper.requireNonNull(onSuccessHandler, "onSuccessHandler is null");
ObjectHelper.requireNonNull(onErrorHandler, "onErrorHandler is null");
ObjectHelper.requireNonNull(onCompleteHandler, "onCompleteHandler is null");
return new MaybeFlatMapSignalObservable(null, onSuccessHandler, onErrorHandler, onCompleteHandler);
}
/**
* Maps the terminal signals of the upstream into {@link Publisher}s and
* subscribes to it, relaying its terminal events to the downstream.
* @param the upstream success value type
* @param the element type of the mapped-in Publisher
* @param onSuccessHandler a function called with the upstream success value and should
* return a Publisher to continue with.
* @param onErrorHandler called when the upstream fails and should return the
* Publisher for the given Throwable instance to continue with.
* @param onCompleteHandler called when the upstream completes normally and should return
* the Publisher to continue with.
* @return the new MaybeConverter instance
* @since 0.20.2
*/
public static MaybeConverter> flatMapFlowable(
Function> onSuccessHandler,
Function> onErrorHandler,
Supplier> onCompleteHandler) {
ObjectHelper.requireNonNull(onSuccessHandler, "onSuccessHandler is null");
ObjectHelper.requireNonNull(onErrorHandler, "onErrorHandler is null");
ObjectHelper.requireNonNull(onCompleteHandler, "onCompleteHandler is null");
return new MaybeFlatMapSignalFlowable(null, onSuccessHandler, onErrorHandler, onCompleteHandler);
}
}