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/* CertStoreSpi -- certificate store service provider interface.

   Copyright (C) 2003 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath 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 for more details.

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

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package java.security.cert;

import java.security.InvalidAlgorithmParameterException;

import java.util.Collection;

/**

 * The <i>service provider interface</i> (<b>SPI</b>) for the {@link

 * CertStore} class.

 *

 * <p>Providers wishing to implement a CertStore must subclass this

 * class, implementing all the abstract methods. Providers may also

 * implement the {@link CertStoreParameters} interface, if they require

 * parameters.

 *

 * @since 1.4

 * @see CertStore

 * @see CollectionCertStoreParameters

 * @see LDAPCertStoreParameters

 */

public abstract class CertStoreSpi

{

  // Constructors.

  // ------------------------------------------------------------------------

  /**

   * Creates a new CertStoreSpi.

   *

   * @param params The parameters to initialize this instance with, or

   *        null if no parameters are required.

   * @throws InvalidAlgorithmParameterException If the specified

   *         parameters are inappropriate for this class.

   */

  public CertStoreSpi(CertStoreParameters params)

    throws InvalidAlgorithmParameterException

  {

    super();

  }

  // Abstract methods.

  // ------------------------------------------------------------------------

  /**

   * Get the certificates from this store, filtering them through the

   * specified CertSelector.

   *

   * @param selector The CertSelector to filter certificates.

   * @return A (non-null) collection of certificates.

   * @throws CertStoreException If the certificates cannot be retrieved.

   */

  public abstract Collection<? extends Certificate> engineGetCertificates(CertSelector selector)

  throws CertStoreException;

  /**

   * Get the certificate revocation list from this store, filtering them

   * through the specified CRLSelector.

   *

   * @param selector The CRLSelector to filter certificate revocation

   *        lists.

   * @return A (non-null) collection of certificate revocation list.

   * @throws CertStoreException If the CRLs cannot be retrieved.

   */

  public abstract Collection<? extends CRL> engineGetCRLs(CRLSelector selector)

  throws CertStoreException;

}