rx.internal.operators.SingleFromCallable Maven / Gradle / Ivy
/**
* Copyright 2016 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.concurrent.Callable;
import rx.*;
import rx.exceptions.Exceptions;
/**
* Execute a callable and emit its resulting value.
*
* @param the value type
*/
public final class SingleFromCallable implements Single.OnSubscribe {
final Callable extends T> callable;
public SingleFromCallable(Callable extends T> callable) {
this.callable = callable;
}
@Override
public void call(SingleSubscriber super T> t) {
T v;
try {
v = callable.call();
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
t.onError(ex);
return;
}
t.onSuccess(v);
}
}
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