/*

 * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

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 *

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package javax.net.ssl;

import java.security.*;

/**

 * This class defines the <i>Service Provider Interface</i> (<b>SPI</b>)

 * for the <code>TrustManagerFactory</code> class.

 *

 * <p> All the abstract methods in this class must be implemented by each

 * cryptographic service provider who wishes to supply the implementation

 * of a particular trust manager factory.

 *

 * @since 1.4

 * @see TrustManagerFactory

 * @see TrustManager

 */

public abstract class TrustManagerFactorySpi {

    /**

     * Initializes this factory with a source of certificate

     * authorities and related trust material.

     *

     * @param ks the key store or null

     * @throws KeyStoreException if this operation fails

     * @see TrustManagerFactory#init(KeyStore)

     */

    protected abstract void engineInit(KeyStore ks) throws KeyStoreException;

    /**

     * Initializes this factory with a source of provider-specific

     * key material.

     * <P>

     * In some cases, initialization parameters other than a keystore

     * may be needed by a provider.  Users of that

     * particular provider are expected to pass an implementation of

     * the appropriate <CODE>ManagerFactoryParameters</CODE> as

     * defined by the provider.  The provider can then call the

     * specified methods in the <CODE>ManagerFactoryParameters</CODE>

     * implementation to obtain the needed information.

     *

     * @param spec an implementation of a provider-specific parameter

     *          specification

     * @throws InvalidAlgorithmParameterException if there is problem

     *          with the parameters

     * @see TrustManagerFactory#init(ManagerFactoryParameters spec)

     */

    protected abstract void engineInit(ManagerFactoryParameters spec)

        throws InvalidAlgorithmParameterException;

    /**

     * Returns one trust manager for each type of trust material.

     *

     * @throws IllegalStateException if the factory is not initialized.

     *

     * @return the trust managers

     */

    protected abstract TrustManager[] engineGetTrustManagers();

}