J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2006 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.security.cert; |
| 27 | |
| 28 | import java.io.Serializable; |
| 29 | import java.util.Collection; |
| 30 | import java.util.Collections; |
| 31 | |
| 32 | /** |
| 33 | * Parameters used as input for the Collection <code>CertStore</code> |
| 34 | * algorithm. |
| 35 | * <p> |
| 36 | * This class is used to provide necessary configuration parameters |
| 37 | * to implementations of the Collection <code>CertStore</code> |
| 38 | * algorithm. The only parameter included in this class is the |
| 39 | * <code>Collection</code> from which the <code>CertStore</code> will |
| 40 | * retrieve certificates and CRLs. |
| 41 | * <p> |
| 42 | * <b>Concurrent Access</b> |
| 43 | * <p> |
| 44 | * Unless otherwise specified, the methods defined in this class are not |
| 45 | * thread-safe. Multiple threads that need to access a single |
| 46 | * object concurrently should synchronize amongst themselves and |
| 47 | * provide the necessary locking. Multiple threads each manipulating |
| 48 | * separate objects need not synchronize. |
| 49 | * |
| 50 | * @since 1.4 |
| 51 | * @author Steve Hanna |
| 52 | * @see java.util.Collection |
| 53 | * @see CertStore |
| 54 | */ |
| 55 | public class CollectionCertStoreParameters |
| 56 | implements CertStoreParameters { |
| 57 | |
| 58 | private Collection<?> coll; |
| 59 | |
| 60 | /** |
| 61 | * Creates an instance of <code>CollectionCertStoreParameters</code> |
| 62 | * which will allow certificates and CRLs to be retrieved from the |
| 63 | * specified <code>Collection</code>. If the specified |
| 64 | * <code>Collection</code> contains an object that is not a |
| 65 | * <code>Certificate</code> or <code>CRL</code>, that object will be |
| 66 | * ignored by the Collection <code>CertStore</code>. |
| 67 | * <p> |
| 68 | * The <code>Collection</code> is <b>not</b> copied. Instead, a |
| 69 | * reference is used. This allows the caller to subsequently add or |
| 70 | * remove <code>Certificates</code> or <code>CRL</code>s from the |
| 71 | * <code>Collection</code>, thus changing the set of |
| 72 | * <code>Certificates</code> or <code>CRL</code>s available to the |
| 73 | * Collection <code>CertStore</code>. The Collection <code>CertStore</code> |
| 74 | * will not modify the contents of the <code>Collection</code>. |
| 75 | * <p> |
| 76 | * If the <code>Collection</code> will be modified by one thread while |
| 77 | * another thread is calling a method of a Collection <code>CertStore</code> |
| 78 | * that has been initialized with this <code>Collection</code>, the |
| 79 | * <code>Collection</code> must have fail-fast iterators. |
| 80 | * |
| 81 | * @param collection a <code>Collection</code> of |
| 82 | * <code>Certificate</code>s and <code>CRL</code>s |
| 83 | * @exception NullPointerException if <code>collection</code> is |
| 84 | * <code>null</code> |
| 85 | */ |
| 86 | public CollectionCertStoreParameters(Collection<?> collection) { |
| 87 | if (collection == null) |
| 88 | throw new NullPointerException(); |
| 89 | coll = collection; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Creates an instance of <code>CollectionCertStoreParameters</code> with |
| 94 | * the default parameter values (an empty and immutable |
| 95 | * <code>Collection</code>). |
| 96 | */ |
| 97 | public CollectionCertStoreParameters() { |
| 98 | coll = Collections.EMPTY_SET; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Returns the <code>Collection</code> from which <code>Certificate</code>s |
| 103 | * and <code>CRL</code>s are retrieved. This is <b>not</b> a copy of the |
| 104 | * <code>Collection</code>, it is a reference. This allows the caller to |
| 105 | * subsequently add or remove <code>Certificates</code> or |
| 106 | * <code>CRL</code>s from the <code>Collection</code>. |
| 107 | * |
| 108 | * @return the <code>Collection</code> (never null) |
| 109 | */ |
| 110 | public Collection<?> getCollection() { |
| 111 | return coll; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Returns a copy of this object. Note that only a reference to the |
| 116 | * <code>Collection</code> is copied, and not the contents. |
| 117 | * |
| 118 | * @return the copy |
| 119 | */ |
| 120 | public Object clone() { |
| 121 | try { |
| 122 | return super.clone(); |
| 123 | } catch (CloneNotSupportedException e) { |
| 124 | /* Cannot happen */ |
| 125 | throw new InternalError(e.toString()); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Returns a formatted string describing the parameters. |
| 131 | * |
| 132 | * @return a formatted string describing the parameters |
| 133 | */ |
| 134 | public String toString() { |
| 135 | StringBuffer sb = new StringBuffer(); |
| 136 | sb.append("CollectionCertStoreParameters: [\n"); |
| 137 | sb.append(" collection: " + coll + "\n"); |
| 138 | sb.append("]"); |
| 139 | return sb.toString(); |
| 140 | } |
| 141 | } |