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NbpObserver.java
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41 lines (36 loc) · 1.28 KB
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/**
* Copyright 2015 Netflix, Inc.
*
* 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;
import io.reactivex.NbpObservable.NbpSubscriber;
import io.reactivex.disposables.Disposable;
import io.reactivex.internal.subscriptions.SubscriptionHelper;
public abstract class NbpObserver<T> implements NbpSubscriber<T> {
private Disposable s;
@Override
public final void onSubscribe(Disposable s) {
if (SubscriptionHelper.validateDisposable(this.s, s)) {
return;
}
this.s = s;
onStart();
}
protected final void cancel() {
s.dispose();
}
/**
* Called once the subscription has been set on this observer; override this
* to perform initialization.
*/
protected void onStart() {
}
}