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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010 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 compliance 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
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 *
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package com.sun.xml.bind.v2.model.annotation;

import java.lang.annotation.Annotation;

import com.sun.xml.bind.v2.runtime.Location;

/**
 * Base implementation of {@link Locatable} {@link Annotation}.
 *
 * 
 * Derived classes of this class is provided for annotations that are commonly
 * used in JAXB, to improve the performance of {@link LocatableAnnotation#create}.
 *
 * @author Kohsuke Kawaguchi
 */
public /*so that our code generator can refer to this class*/ abstract class Quick implements Annotation, Locatable, Location {
    private final Locatable upstream;

    protected Quick(Locatable upstream) {
        this.upstream = upstream;
    }

    /**
     * Gets the annotation object that this object is wrapping.
     */
    protected abstract Annotation getAnnotation();

    /**
     * Factory method to create a new instance of the same kind.
     * A {@link Quick} object also works as a factory of itself
     */
    protected abstract Quick newInstance( Locatable upstream, Annotation core );

    public final Location getLocation() {
        return this;
    }

    public final Locatable getUpstream() {
        return upstream;
    }

    public final String toString() {
        return getAnnotation().toString();
    }
}