jdk/src/java.base/share/classes/java/security/PermissionCollection.java
changeset 31469 92cc72d2a11a
parent 25859 3317bb8137f4
child 35302 e4d2275861c3
--- a/jdk/src/java.base/share/classes/java/security/PermissionCollection.java	Tue Jun 30 17:48:06 2015 -0700
+++ b/jdk/src/java.base/share/classes/java/security/PermissionCollection.java	Tue Jun 09 07:10:02 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,6 +26,8 @@
 package java.security;
 
 import java.util.*;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
 
 /**
  * Abstract class representing a collection of Permission objects.
@@ -126,10 +128,35 @@
      * Returns an enumeration of all the Permission objects in the collection.
      *
      * @return an enumeration of all the Permissions.
+     * @see #elementsAsStream()
      */
     public abstract Enumeration<Permission> elements();
 
     /**
+     * Returns a stream of all the Permission objects in the collection.
+     *
+     * <p> The collection should not be modified (see {@link #add}) during the
+     * execution of the terminal stream operation. Otherwise, the result of the
+     * terminal stream operation is undefined.
+     *
+     * @implSpec
+     * The default implementation creates a stream whose source is derived from
+     * the enumeration returned from a call to {@link #elements()}.
+     *
+     * @return a stream of all the Permissions.
+     * @since 1.9
+     */
+    public Stream<Permission> elementsAsStream() {
+        int characteristics = isReadOnly()
+                ? Spliterator.NONNULL | Spliterator.IMMUTABLE
+                : Spliterator.NONNULL;
+        return StreamSupport.stream(
+                Spliterators.spliteratorUnknownSize(
+                        elements().asIterator(), characteristics),
+                false);
+    }
+
+    /**
      * Marks this PermissionCollection object as "readonly". After
      * a PermissionCollection object
      * is marked as readonly, no new Permission objects can be added to it