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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;

/**
 * Signifies that an attempt was made to register a service using a name that already has a service registered.
 *
 * @author Dain Sundstrom
 * @version $Id$
 * @since 2.0
 */
public class ServiceAlreadyExistsException extends Exception {
    private final ServiceName serviceName;

    /**
     * Creates a ServiceAlreadyExistsException for the specified service name.
     *
     * @param serviceName the name of the service that already exists
     */
    public ServiceAlreadyExistsException(ServiceName serviceName) {
        if (serviceName == null) throw new NullPointerException("name is null");
        this.serviceName = serviceName;
    }

    /**
     * Gets the name of the service that caused this exception.
     *
     * @return the service name
     */
    public ServiceName getServiceName() {
        return serviceName;
    }
}