rx.internal.operators.OperatorWindowWithObservable Maven / Gradle / Ivy
/**
* Copyright 2014 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 rx.internal.operators;
import java.util.*;
import rx.Observable;
import rx.Observable.Operator;
import rx.Observer;
import rx.Subscriber;
import rx.observers.SerializedSubscriber;
import rx.subjects.UnicastSubject;
/**
* Creates non-overlapping windows of items where each window is terminated by
* an event from a secondary observable and a new window is started immediately.
*
* @param the value type
* @param the boundary value type
*/
public final class OperatorWindowWithObservable implements Operator, T> {
final Observable other;
/** Indicate the current subject should complete and a new subject be emitted. */
static final Object NEXT_SUBJECT = new Object();
public OperatorWindowWithObservable(final Observable other) {
this.other = other;
}
@Override
public Subscriber super T> call(Subscriber super Observable> child) {
SourceSubscriber sub = new SourceSubscriber(child);
BoundarySubscriber bs = new BoundarySubscriber(sub);
child.add(sub);
child.add(bs);
sub.replaceWindow();
other.unsafeSubscribe(bs);
return sub;
}
/** Observes the source. */
static final class SourceSubscriber extends Subscriber {
final Subscriber super Observable> child;
final Object guard;
/** Accessed from the serialized part. */
Observer consumer;
/** Accessed from the serialized part. */
Observable producer;
/** Guarded by guard. */
boolean emitting;
/** Guarded by guard. */
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