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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in org.testifyproject.testifyprojectpliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
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 */
package org.testifyproject.glassfish.hk2.api;

/**
 * This exception is thrown when an idempotent filter of a
 * DynamicConfiguration object matches an existing descriptor
 * in the ServiceLocator
 * 
 * @author jwells
 */
public class DuplicateServiceException extends HK2RuntimeException {
    private static final long serialVersionUID = 7182947621027566487L;
    
    private Descriptor existingDescriptor;
    
    /**
     * For serialization
     */
    public DuplicateServiceException() {
        super();
    }
    
    /**
     * Called by the system to initialize the existing descriptor
     * that matched
     * 
     * @param existingDescriptor The possibly null existing descriptor
     * that matched one of the idempotent filters
     */
    public DuplicateServiceException(Descriptor existingDescriptor) {
        super();
        this.existingDescriptor = existingDescriptor;
    }
    
    /**
     * Gets the descriptor that matched one of the idempotent
     * filters
     * 
     * @return The descriptor that matched one of the idempotent
     * filters or null if the matching descriptor is unknown
     */
    public Descriptor getExistingDescriptor() {
        return existingDescriptor;
    }
    
    @Override
    public String toString() {
        return "DuplicateServiceException(" + existingDescriptor +
                "," + System.identityHashCode(this) + ")";
    }

}