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/*
* Copyright (c) OSGi Alliance (2014). All Rights Reserved.
*
* 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 org.osgi.util.promise;
import java.util.Collection;
import java.util.Collections;
/**
* Promise failure exception for a collection of failed Promises.
*
* @author $Id$
*/
public class FailedPromisesException extends RuntimeException {
private static final long serialVersionUID = 1L;
private final Collection<Promise<?>> failed;
/**
* Create a new FailedPromisesException with the specified Promises.
*
* @param failed A collection of Promises that have been resolved with a
* failure. Must not be {@code null}, must not be empty and all of
* the elements in the collection must not be {@code null}.
* @param cause The cause of this exception. This is typically the failure
* of the first Promise in the specified collection.
*/
public FailedPromisesException(Collection<Promise<?>> failed, Throwable cause) {
super(cause);
this.failed = Collections.unmodifiableCollection(failed);
}
/**
* Returns the collection of Promises that have been resolved with a
* failure.
*
* @return The collection of Promises that have been resolved with a
* failure. The returned collection is unmodifiable.
*/
public Collection<Promise<?>> getFailedPromises() {
return failed;
}
}
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