/*
 *  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 javax.net.ssl;

import java.security.InvalidAlgorithmParameterException;
import java.security.KeyStore;
import java.security.KeyStoreException;

/**
 * The <i>Service Provider Interface</i> (SPI) for the
 * {@code TrustManagerFactory} class.
 */
public abstract class TrustManagerFactorySpi {

    /**
     * Creates a new {@code TrustManagerFactorySpi} instance.
     */
    public TrustManagerFactorySpi() {
    }

    /**
     * Initializes this factory instance with the specified keystore as source
     * of certificate authorities and trust material.
     *
     * @param ks
     *            the keystore or {@code null}.
     * @throws KeyStoreException
     *             if the initialization fails.
     */
    protected abstract void engineInit(KeyStore ks) throws KeyStoreException;

    /**
     * Initializes this factory instance with the specified provider-specific
     * parameters for a source of trust material.
     *
     * @param spec
     *            the provider-specific parameters.
     * @throws InvalidAlgorithmParameterException
     *             if the initialization fails.
     */
    protected abstract void engineInit(ManagerFactoryParameters spec)
            throws InvalidAlgorithmParameterException;

    /**
     * Returns the list of {@code TrustManager}s with one entry for each type
     * of trust material.
     *
     * @return the list of {@code TrustManager}s
     */
    protected abstract TrustManager[] engineGetTrustManagers();
}