1 /* 2 * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.security.cert; 27 28 /** 29 * A specification of <code>CertStore</code> parameters. 30 * <p> 31 * The purpose of this interface is to group (and provide type safety for) 32 * all <code>CertStore</code> parameter specifications. All 33 * <code>CertStore</code> parameter specifications must implement this 34 * interface. 35 * <p> 36 * Typically, a <code>CertStoreParameters</code> object is passed as a parameter 37 * to one of the {@link CertStore#getInstance CertStore.getInstance} methods. 38 * The <code>getInstance</code> method returns a <code>CertStore</code> that 39 * is used for retrieving <code>Certificate</code>s and <code>CRL</code>s. The 40 * <code>CertStore</code> that is returned is initialized with the specified 41 * parameters. The type of parameters needed may vary between different types 42 * of <code>CertStore</code>s. 43 * 44 * @see CertStore#getInstance 45 * 46 * @since 1.4 47 * @author Steve Hanna 48 */ 49 public interface CertStoreParameters extends Cloneable { 50 51 /** 52 * Makes a copy of this <code>CertStoreParameters</code>. 53 * <p> 54 * The precise meaning of "copy" may depend on the class of 55 * the <code>CertStoreParameters</code> object. A typical implementation 56 * performs a "deep copy" of this object, but this is not an absolute 57 * requirement. Some implementations may perform a "shallow copy" of some 58 * or all of the fields of this object. 59 * <p> 60 * Note that the <code>CertStore.getInstance</code> methods make a copy 61 * of the specified <code>CertStoreParameters</code>. A deep copy 62 * implementation of <code>clone</code> is safer and more robust, as it 63 * prevents the caller from corrupting a shared <code>CertStore</code> by 64 * subsequently modifying the contents of its initialization parameters. 65 * However, a shallow copy implementation of <code>clone</code> is more 66 * appropriate for applications that need to hold a reference to a 67 * parameter contained in the <code>CertStoreParameters</code>. For example, 68 * a shallow copy clone allows an application to release the resources of 69 * a particular <code>CertStore</code> initialization parameter immediately, 70 * rather than waiting for the garbage collection mechanism. This should 71 * be done with the utmost care, since the <code>CertStore</code> may still 72 * be in use by other threads. 73 * <p> 74 * Each subclass should state the precise behavior of this method so 75 * that users and developers know what to expect. 76 * 77 * @return a copy of this <code>CertStoreParameters</code> 78 */ 79 Object clone(); 80 }