Showing the changes to java/pkg/com/sun/jndi/toolkit/dir/ContainmentFilter.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1999, Oracle and/or its affiliates. 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +/** | |
| 27 | + * Supports checking an attribute set satisfies a filter | |
| 28 | + * that is specified as a set of "matching" attributes. | |
| 29 | + * Checking is done by determining whether the given attribute set | |
| 30 | + * is a superset of the matching ones. | |
| 31 | + * | |
| 32 | + * @author Rosanna Lee | |
| 33 | + */ | |
| 34 | + | |
| 35 | +package com.sun.jndi.toolkit.dir; | |
| 36 | + | |
| 37 | +import javax.naming.*; | |
| 38 | +import javax.naming.directory.*; | |
| 39 | + | |
| 40 | +public class ContainmentFilter implements AttrFilter { | |
| 41 | + private Attributes matchingAttrs; | |
| 42 | + | |
| 43 | + public ContainmentFilter(Attributes match) { | |
| 44 | + matchingAttrs = match; | |
| 45 | + } | |
| 46 | + | |
| 47 | + public boolean check(Attributes attrs) throws NamingException { | |
| 48 | + return matchingAttrs == null || | |
| 49 | + matchingAttrs.size() == 0 || | |
| 50 | + contains(attrs, matchingAttrs); | |
| 51 | + } | |
| 52 | + | |
| 53 | + // returns true if superset contains subset | |
| 54 | + public static boolean contains(Attributes superset, Attributes subset) | |
| 55 | + throws NamingException { | |
| 56 | + if (subset == null) | |
| 57 | + return true; // an empty set is always a subset | |
| 58 | + | |
| 59 | + NamingEnumeration m = subset.getAll(); | |
| 60 | + while (m.hasMore()) { | |
| 61 | + if (superset == null) { | |
| 62 | + return false; // contains nothing | |
| 63 | + } | |
| 64 | + Attribute target = (Attribute) m.next(); | |
| 65 | + Attribute fromSuper = superset.get(target.getID()); | |
| 66 | + if (fromSuper == null) { | |
| 67 | + return false; | |
| 68 | + } else { | |
| 69 | + // check whether attribute values match | |
| 70 | + if (target.size() > 0) { | |
| 71 | + NamingEnumeration vals = target.getAll(); | |
| 72 | + while (vals.hasMore()) { | |
| 73 | + if (!fromSuper.contains(vals.next())) { | |
| 74 | + return false; | |
| 75 | + } | |
| 76 | + } | |
| 77 | + } | |
| 78 | + } | |
| 79 | + } | |
| 80 | + return true; | |
| 81 | + } | |
| 82 | + | |
| 83 | +} | |