/*

 * Copyright 1997-2000 Sun Microsystems, Inc.  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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package sun.security.x509;

import java.io.IOException;

import sun.security.util.*;

/**

 * Represent the CertificatePolicyId ASN.1 object.

 *

 * @author Amit Kapoor

 * @author Hemma Prafullchandra

 */

public class CertificatePolicyId {

    private ObjectIdentifier id;

    /**

     * Create a CertificatePolicyId with the ObjectIdentifier.

     *

     * @param id the ObjectIdentifier for the policy id.

     */

    public CertificatePolicyId(ObjectIdentifier id) {

        this.id = id;

    }

    /**

     * Create the object from its Der encoded value.

     *

     * @param val the DER encoded value for the same.

     */

    public CertificatePolicyId(DerValue val) throws IOException {

        this.id = val.getOID();

    }

    /**

     * Return the value of the CertificatePolicyId as an ObjectIdentifier.

     */

    public ObjectIdentifier getIdentifier() {

        return (id);

    }

    /**

     * Returns a printable representation of the CertificatePolicyId.

     */

    public String toString() {

        String s = "CertificatePolicyId: ["

                 + id.toString()

                 + "]\n";

        return (s);

    }

    /**

     * Write the CertificatePolicyId to the DerOutputStream.

     *

     * @param out the DerOutputStream to write the object to.

     * @exception IOException on errors.

     */

    public void encode(DerOutputStream out) throws IOException {

        out.putOID(id);

    }

    /**

     * Compares this CertificatePolicyId with another, for

     * equality. Uses ObjectIdentifier.equals() as test for

     * equality.

     *

     * @return true iff the ids are identical.

     */

    public boolean equals(Object other) {

        if (other instanceof CertificatePolicyId)

            return id.equals(((CertificatePolicyId) other).getIdentifier());

        else

            return false;

    }

    /**

     * Returns a hash code value for this object.

     *

     * @return a hash code value

     */

    public int hashCode() {

      return id.hashCode();

    }

}