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+/* UnresolvedPermission.java -- Placeholder for unresolved permissions.
+ Copyright (C) 1998 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.security;
+
+import java.io.Serializable;
+
+/**
+ * This class is used to hold instances of all permissions that cannot
+ * be resolved to available permission classes when the security
+ * <code>Policy</code> object is instantiated. This may happen when the
+ * necessary security class has not yet been downloaded from the network.
+ * <p>
+ * Instances of this class are re-resolved when <code>AccessController</code>
+ * check is done. At that time, a scan is made of all existing
+ * <code>UnresolvedPermission</code> objects and they are converted to
+ * objects of the appropriate permission type if the class for that type
+ * is then available.
+ *
+ * @version 0.0
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public class UnresolvedPermission extends Permission implements Serializable
+{
+
+ /**
+ * The list of actions associated with this permission object
+ */
+ private String actions;
+
+ /**
+ * The list of <code>Certificates</code> associated with this object
+ */
+ private Certificate[] certs;
+
+ /**
+ * The name of the class this object should be resolved to.
+ */
+ private String type;
+
+ /**
+ * This method initializes a new instance of <code>UnresolvedPermission</code>
+ * with all the information necessary to resolve it to an instance of the
+ * proper class at a future time.
+ *
+ * @param type The name of the desired class this permission should be resolved to
+ * @param name The name of this permission
+ * @param actions The action list for this permission
+ * @param certs The list of certificates this permission's class was signed with
+ */
+ public UnresolvedPermission(String type, String name, String actions,
+ Certificate[] certs)
+ {
+ super(name);
+
+ this.type = type;
+ this.actions = actions;
+ this.certs = certs;
+ }
+
+ /**
+ * This method returns the list of actions associated with this
+ * permission.
+ *
+ * @return The action list
+ */
+ public String getActions()
+ {
+ return (actions);
+ }
+
+ /**
+ * This method returns <code>false</code> always to indicate that this
+ * permission does not imply the specified permission. An
+ * <code>UnresolvedPermission</code> never grants any permissions.
+ *
+ * @param perm The <code>Permission</code> object to test against - ignored by this class
+ *
+ * @return <code>false</code> to indicate this permission does not imply the specified permission.
+ */
+ public boolean implies(Permission perm)
+ {
+ return (false);
+ }
+
+ /**
+ * This method tests this permission for equality against the specified
+ * <code>Object</code>. This will be true if and only if the following
+ * conditions are met:
+ * <p>
+ * <ul>
+ * <li>The specified <code>Object</code> is an instance of
+ * <code>UnresolvedPermission</code>, or a subclass.
+ * <li>The specified permission has the same type (i.e., desired class name)
+ * as this permission.
+ * <li>The specified permission has the same name as this one.
+ * <li>The specified permissoin has the same action list as this one.
+ * <li>The specified permission has the same certificate list as this one.
+ * </ul>
+ *
+ * @param obj The <code>Object</code> to test for equality
+ *
+ * @return <code>true</code> if the specified object is equal to this one, <code>false</code> otherwise.
+ */
+ public boolean equals(Object obj)
+ {
+ if (!(obj instanceof UnresolvedPermission))
+ return (false);
+
+ UnresolvedPermission up = (UnresolvedPermission) obj;
+
+ if (!getName().equals(up.getName()))
+ return (false);
+
+ if (!getActions().equals(up.getActions()))
+ return (false);
+
+ if (!type.equals(up.type))
+ return (false);
+
+ if (!certs.equals(up.certs))
+ return (false);
+
+ return (true);
+ }
+
+ /**
+ * Returns a hash code value for this object.
+ *
+ * @return A hash value
+ */
+ public int hashCode()
+ {
+ return (System.identityHashCode(this));
+ }
+
+ /**
+ * This method returns a <code>String</code> representation of this
+ * class. The format is: '(unresolved "ClassName "name" "actions")'
+ *
+ * @return A <code>String</code> representation of this object
+ */
+ public String toString()
+ {
+ return "(unresolved " + type + " " + getName() + " " + getActions() + ")";
+ }
+
+ /**
+ * This class returns a <code>PermissionCollection</code> object that can
+ * be used to store instances of <code>UnresolvedPermission</code>. If
+ * <code>null</code> is returned, the caller is free to use any desired
+ * <code>PermissionCollection</code>.
+ *
+ * @return A new <code>PermissionCollection</code>.
+ */
+ public PermissionCollection newPermissionCollection()
+ {
+ return (null);
+ }
+}