Source for gnu.CORBA.Poa.StandardPolicies

   1: /* StandardPolicies.java --
   2:    Copyright (C) 2005 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 gnu.CORBA.Poa;
  40: 
  41: import org.omg.CORBA.Policy;
  42: import org.omg.PortableServer.IdAssignmentPolicyValue;
  43: import org.omg.PortableServer.IdUniquenessPolicyValue;
  44: import org.omg.PortableServer.ImplicitActivationPolicyValue;
  45: import org.omg.PortableServer.LifespanPolicyValue;
  46: import org.omg.PortableServer.RequestProcessingPolicyValue;
  47: import org.omg.PortableServer.ServantRetentionPolicyValue;
  48: import org.omg.PortableServer.ThreadPolicyValue;
  49: 
  50: import java.util.ArrayList;
  51: 
  52: /**
  53:  * Contains the frequently uset POA policy sets. The policy
  54:  * arrays are package private for security reasons, the cloned
  55:  * copies are returned.
  56:  *
  57:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  58:  */
  59: public class StandardPolicies
  60: {
  61:   /**
  62:    * The default policy set, as defined in OMG specs. This is also
  63:    * the policy set for the root POA.
  64:    */
  65:   private static final AccessiblePolicy[] rootPOASet =
  66:     new AccessiblePolicy[]
  67:     {
  68:       new gnuThreadPolicy(ThreadPolicyValue.ORB_CTRL_MODEL),
  69:       new gnuLifespanPolicy(LifespanPolicyValue.TRANSIENT),
  70:       new gnuIdUniquenessPolicy(IdUniquenessPolicyValue.UNIQUE_ID),
  71:       new gnuIdAssignmentPolicy(IdAssignmentPolicyValue.SYSTEM_ID),
  72:       new gnuServantRetentionPolicy(ServantRetentionPolicyValue.RETAIN),
  73:       new gnuRequestProcessingPolicy(RequestProcessingPolicyValue.USE_ACTIVE_OBJECT_MAP_ONLY),
  74:       new gnuImplicitActivationPolicy(ImplicitActivationPolicyValue.IMPLICIT_ACTIVATION)
  75:     };
  76: 
  77:   /**
  78:    * Return the policy set, applicable for the root POA, as defined
  79:    * in OMG specs.
  80:    */
  81:   public static Policy[] rootPoa()
  82:   {
  83:     Policy[] p = new Policy[ rootPOASet.length ];
  84:     System.arraycopy(rootPOASet, 0, p, 0, p.length);
  85:     return p;
  86:   }
  87: 
  88:   /**
  89:    * Convert the potentially incomplete policy array into array, containing
  90:    * the complete policy set.
  91:    *
  92:    * @param policies the policy list, may be incomplete (even zero size).
  93:    *
  94:    * @return the complete policy array. The missing, but needed policies
  95:    * are added with they default values.
  96:    */
  97:   public static Policy[] withDefault(Policy[] policies)
  98:   {
  99:     ArrayList current = new ArrayList(rootPOASet.length);
 100:     Policy p_default;
 101:     boolean specified;
 102: 
 103:     for (int i = 0; i < rootPOASet.length; i++)
 104:       {
 105:         p_default = rootPOASet [ i ];
 106:         specified = false;
 107:         ForThis:
 108:         for (int j = 0; j < policies.length; j++)
 109:           {
 110:             if (policies [ j ].policy_type() == p_default.policy_type())
 111:               {
 112:                 specified = true;
 113:                 current.add(policies [ j ]);
 114:                 break ForThis;
 115:               }
 116:           }
 117:         if (!specified)
 118:           current.add(p_default.copy());
 119:       }
 120: 
 121:     Policy[] complete = new Policy[ current.size() ];
 122:     for (int i = 0; i < complete.length; i++)
 123:       {
 124:         complete [ i ] = (Policy) current.get(i);
 125:       }
 126:     return complete;
 127:   }
 128: }