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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.xbean.kernel;

import java.util.Collections;
import java.util.Set;

/**
 * Signifies that there were unsatified conditions during a start or stop operation.  The service is left in the
 * STARTING state or STOPPING state.
 *
 * @author Dain Sundstrom
 * @version $Id$
 * @since 2.0
 */
public class UnsatisfiedConditionsException extends Exception {
    private final ServiceName serviceName;
    private final Set unsatisfiedConditions;

    /**
     * Creates an UnsatisfiedConditionsException for the specified service and unsatisfied conditions.
     *
     * @param message information about the unsatisfied conditions
     * @param serviceName the name of the service that has unsatisfied conditions
     * @param unsatisfiedConditions the unsatisfied conditions
     */
    public UnsatisfiedConditionsException(String message, ServiceName serviceName, Set unsatisfiedConditions) {
        super(message + ": serviceName=" + serviceName + ": unsatisfiedConditions=" + unsatisfiedConditions);
        if (serviceName == null) throw new NullPointerException("serviceName is null");
        if (unsatisfiedConditions == null) throw new NullPointerException("unsatisfiedConditions is null");
        this.serviceName = serviceName;
        this.unsatisfiedConditions = Collections.unmodifiableSet(unsatisfiedConditions);
    }

    /**
     * Gets the name of the service that has unsatisfied conditions.
     *
     * @return the service name
     */
    public ServiceName getServiceName() {
        return serviceName;
    }

    /**
     * Gets the conditions that were unsatified when the exception was thrown.
     *
     * @return the unsatified conditions that were ignored
     */
    public Set getUnsatisfiedConditions() {
        return unsatisfiedConditions;
    }
}