# PassivationException.java

    /*
     * Copyright 2009 Niclas Hedhman.
     * Copyright 2013 Paul Merlin.
     *
     * 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.qi4j.api.activation;

    import java.util.ArrayList;
    import java.util.Collection;
    import java.util.List;

    /**
     * Thrown when unable to passivate.
     *
     * Printed StackTrace contains all causes in order as suppressed exceptions.
     */
    public final class PassivationException
        extends Exception
    {

        private static final long serialVersionUID = 1L;
        private final List<Exception> causes;

        /**
         * Create new PassivationException.
         * @param exceptions All exceptions encountered during passivation, in order
         */
        public PassivationException( Collection<Exception> exceptions )
        {
            super( "Passivation Exception - [has " + exceptions.size() + " cause(s)]" );
            for( Throwable cause : exceptions )
            {
                addSuppressed( cause );
            }
            this.causes = new ArrayList<>( exceptions );
        }

        /**
         * @return All exceptions encountered during passivation, in order
         */
        public List<Exception> causes()
        {
            return causes;
        }

    }