Source for java.security.cert.CollectionCertStoreParameters

   1: /* CollectionCertStoreParameters -- collection-based cert store parameters
   2:    Copyright (C) 2003 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10:  
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.security.cert;
  40: 
  41: import java.util.ArrayList;
  42: import java.util.Collection;
  43: import java.util.Collections;
  44: 
  45: /**
  46:  * An implementation of {@link CertStoreParameters} with a simple,
  47:  * in-memory {@link Collection} of certificates and certificate
  48:  * revocation list.
  49:  *
  50:  * <p>Note that this class is not thread-safe, and its underlying
  51:  * collection may be changed at any time.
  52:  *
  53:  * @see CertStore
  54:  * @since 1.4
  55:  */
  56: public class CollectionCertStoreParameters implements CertStoreParameters
  57: {
  58: 
  59:   // Constants and fields.
  60:   // ------------------------------------------------------------------------
  61: 
  62:   /** The underlying collection. */
  63:   private final Collection collection;
  64: 
  65:   // Constructors.
  66:   // ------------------------------------------------------------------------
  67: 
  68:   /**
  69:    * Creates a new CollectionCertStoreParameters with an empty,
  70:    * immutable collection.
  71:    */
  72:   public CollectionCertStoreParameters()
  73:   {
  74:     this(Collections.EMPTY_LIST);
  75:   }
  76: 
  77:   /**
  78:    * Create a new CollectionCertStoreParameters with the specified
  79:    * collection. The argument is not copied, and subsequent changes to
  80:    * the collection will change this class's collection.
  81:    *
  82:    * @param collection The collection.
  83:    * @throws NullPointerException If <i>collection</i> is null.
  84:    */
  85:   public CollectionCertStoreParameters(Collection<?> collection)
  86:   {
  87:     if (collection == null)
  88:       throw new NullPointerException();
  89:     this.collection = collection;
  90:   }
  91: 
  92:   // Instance methods.
  93:   // ------------------------------------------------------------------------
  94: 
  95:   public Object clone()
  96:   {
  97:     return new CollectionCertStoreParameters(new ArrayList(collection));
  98:   }
  99: 
 100:   /**
 101:    * Return the underlying collection. The collection is not copied
 102:    * before being returned, so callers may update the collection that is
 103:    * returned.
 104:    *
 105:    * @return The collection.
 106:    */
 107:   public Collection<?> getCollection()
 108:   {
 109:     return collection;
 110:   }
 111: 
 112:   /**
 113:    * Return a string representation of these parameters.
 114:    *
 115:    * @return The string representation of these parameters.
 116:    */
 117:   public String toString()
 118:   {
 119:     return "CollectionCertStoreParameters: [ collection: "
 120:       + collection + " ]";
 121:   }
 122: }