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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package java.security.cert;

import java.util.Date;

import sun.security.provider.certpath.CertPathHelper;

/**
 * Helper class that allows the Sun CertPath provider to access
 * implementation dependent APIs in CertPath framework.
 *
 * @author Andreas Sterbenz
 */
class CertPathHelperImpl extends CertPathHelper {

    private CertPathHelperImpl() {
        // empty
    }

    /**
     * Initialize the helper framework. This method must be called from
     * the static initializer of each class that is the target of one of
     * the methods in this class. This ensures that the helper is initialized
     * prior to a tunneled call from the Sun provider.
     */
    synchronized static void initialize() {
        if (CertPathHelper.instance == null) {
            CertPathHelper.instance = new CertPathHelperImpl();
        }
    }

    protected void implSetDateAndTime(X509CRLSelector sel, Date date, long skew) {
        sel.setDateAndTime(date, skew);
    }

    protected boolean implIsJdkCA(TrustAnchor anchor) {
        return anchor.isJdkCA();
    }
}
