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/*
 * Copyright (c) 2016-present, RxJava Contributors.
 *
 * 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 io.reactivex.rxjava3.exceptions;

import io.reactivex.rxjava3.annotations.NonNull;

/**
 * Represents an exception used to signal to the {@code RxJavaPlugins.onError()} that a
 * callback-based subscribe() method on a base reactive type didn't specify
 * an onError handler.
 * History: 2.0.6 - experimental; 2.1 - beta
 * @since 2.2
 */
public final class OnErrorNotImplementedException extends RuntimeException {

    private static final long serialVersionUID = -6298857009889503852L;

    /**
     * Customizes the {@code Throwable} with a custom message and wraps it before it
     * is signalled to the {@code RxJavaPlugins.onError()} handler as {@code OnErrorNotImplementedException}.
     *
     * @param message
     *          the message to assign to the {@code Throwable} to signal
     * @param e
     *          the {@code Throwable} to signal; if null, a NullPointerException is constructed
     */
    public OnErrorNotImplementedException(String message, @NonNull Throwable e) {
        super(message, e != null ? e : new NullPointerException());
    }

    /**
     * Wraps the {@code Throwable} before it
     * is signalled to the {@code RxJavaPlugins.onError()}
     * handler as {@code OnErrorNotImplementedException}.
     *
     * @param e
     *          the {@code Throwable} to signal; if null, a NullPointerException is constructed
     */
    public OnErrorNotImplementedException(@NonNull Throwable e) {
        this("The exception was not handled due to missing onError handler in the subscribe() method call. Further reading: https://github.com/ReactiveX/RxJava/wiki/Error-Handling | " + e, e);
    }
}