/**
* 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.internal.operators.single;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.exceptions.
Exceptions;
import io.reactivex.functions.
BiPredicate;
public final class
SingleContains<T> extends
Single<
Boolean> {
final
SingleSource<T>
source;
final
Object value;
final
BiPredicate<
Object,
Object>
comparer;
public
SingleContains(
SingleSource<T>
source,
Object value,
BiPredicate<
Object,
Object>
comparer) {
this.
source =
source;
this.
value =
value;
this.
comparer =
comparer;
}
@
Override
protected void
subscribeActual(final
SingleObserver<? super
Boolean>
observer) {
source.
subscribe(new
ContainsSingleObserver(
observer));
}
final class
ContainsSingleObserver implements
SingleObserver<T> {
private final
SingleObserver<? super
Boolean>
downstream;
ContainsSingleObserver(
SingleObserver<? super
Boolean>
observer) {
this.
downstream =
observer;
}
@
Override
public void
onSubscribe(
Disposable d) {
downstream.
onSubscribe(
d);
}
@
Override
public void
onSuccess(T
v) {
boolean
b;
try {
b =
comparer.
test(
v,
value);
} catch (
Throwable ex) {
Exceptions.
throwIfFatal(
ex);
downstream.
onError(
ex);
return;
}
downstream.
onSuccess(
b);
}
@
Override
public void
onError(
Throwable e) {
downstream.
onError(
e);
}
}
}