Wed, 27 Apr 2016 01:27:09 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/jaxws/
changeset: 657:d47a47f961ee
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.xml.internal.ws.policy; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import com.sun.xml.internal.ws.policy.privateutil.PolicyUtils; |
aoqi@0 | 29 | import com.sun.xml.internal.ws.policy.sourcemodel.wspolicy.NamespaceVersion; |
aoqi@0 | 30 | import java.util.ArrayList; |
aoqi@0 | 31 | import java.util.Collection; |
aoqi@0 | 32 | import java.util.LinkedList; |
aoqi@0 | 33 | |
aoqi@0 | 34 | /** |
aoqi@0 | 35 | * Merge policies and return the effective policy. |
aoqi@0 | 36 | * |
aoqi@0 | 37 | * WS-PolicyAttachment defines a merge algorithm for WSDL 1.1 policy attachments. |
aoqi@0 | 38 | */ |
aoqi@0 | 39 | public final class PolicyMerger { |
aoqi@0 | 40 | private static final PolicyMerger merger = new PolicyMerger(); |
aoqi@0 | 41 | |
aoqi@0 | 42 | /** |
aoqi@0 | 43 | * This private constructor is to avoid direct class instantiation from outsied of the package |
aoqi@0 | 44 | */ |
aoqi@0 | 45 | private PolicyMerger() { |
aoqi@0 | 46 | // nothing to instantiate |
aoqi@0 | 47 | } |
aoqi@0 | 48 | |
aoqi@0 | 49 | /** |
aoqi@0 | 50 | * Factory method for obtaining thread-safe policy merger instance. |
aoqi@0 | 51 | * |
aoqi@0 | 52 | * @return policy merger instance. |
aoqi@0 | 53 | */ |
aoqi@0 | 54 | public static PolicyMerger getMerger() { |
aoqi@0 | 55 | return merger; |
aoqi@0 | 56 | } |
aoqi@0 | 57 | |
aoqi@0 | 58 | /** |
aoqi@0 | 59 | * Takes collection of policies and merges them into a single policy using algorithm described in |
aoqi@0 | 60 | * WS-PolicyAttachment specification. None of the original policies in the collection are modified in |
aoqi@0 | 61 | * any way. |
aoqi@0 | 62 | * |
aoqi@0 | 63 | * The newly created policy has an ID that is a concatentation of all merged policy IDs. |
aoqi@0 | 64 | * |
aoqi@0 | 65 | * @param policies collection of policies to be merged. The collection must not contain '{@code null}' elements! |
aoqi@0 | 66 | * @return merged policy containing combination of policy alternatives stored in all input policies. |
aoqi@0 | 67 | * If provided collection of policies is {@code null} or empty, returns {@code null}. If provided |
aoqi@0 | 68 | * collection of policies contains only single policy, the policy is returned. |
aoqi@0 | 69 | */ |
aoqi@0 | 70 | public Policy merge(final Collection<Policy> policies) { |
aoqi@0 | 71 | if (policies == null || policies.isEmpty()) { |
aoqi@0 | 72 | return null; |
aoqi@0 | 73 | } else if (policies.size() == 1) { |
aoqi@0 | 74 | return policies.iterator().next(); |
aoqi@0 | 75 | } |
aoqi@0 | 76 | |
aoqi@0 | 77 | final Collection<Collection<AssertionSet>> alternativeSets = new LinkedList<Collection<AssertionSet>>(); |
aoqi@0 | 78 | final StringBuilder id = new StringBuilder(); |
aoqi@0 | 79 | NamespaceVersion mergedVersion = policies.iterator().next().getNamespaceVersion(); |
aoqi@0 | 80 | for (Policy policy : policies) { |
aoqi@0 | 81 | alternativeSets.add(policy.getContent()); |
aoqi@0 | 82 | if (mergedVersion.compareTo(policy.getNamespaceVersion()) < 0) { |
aoqi@0 | 83 | mergedVersion = policy.getNamespaceVersion(); |
aoqi@0 | 84 | } |
aoqi@0 | 85 | final String policyId = policy.getId(); |
aoqi@0 | 86 | if (policyId != null) { |
aoqi@0 | 87 | if (id.length() > 0) { |
aoqi@0 | 88 | id.append('-'); |
aoqi@0 | 89 | } |
aoqi@0 | 90 | id.append(policyId); |
aoqi@0 | 91 | } |
aoqi@0 | 92 | } |
aoqi@0 | 93 | |
aoqi@0 | 94 | final Collection<Collection<AssertionSet>> combinedAlternatives = PolicyUtils.Collections.combine(null, alternativeSets, false); |
aoqi@0 | 95 | |
aoqi@0 | 96 | if (combinedAlternatives == null || combinedAlternatives.isEmpty()) { |
aoqi@0 | 97 | return Policy.createNullPolicy(mergedVersion, null, id.length() == 0 ? null : id.toString()); |
aoqi@0 | 98 | } else { |
aoqi@0 | 99 | final Collection<AssertionSet> mergedSetList = new ArrayList<AssertionSet>(combinedAlternatives.size()); |
aoqi@0 | 100 | for (Collection<AssertionSet> toBeMerged : combinedAlternatives) { |
aoqi@0 | 101 | mergedSetList.add(AssertionSet.createMergedAssertionSet(toBeMerged)); |
aoqi@0 | 102 | } |
aoqi@0 | 103 | return Policy.createPolicy(mergedVersion, null, id.length() == 0 ? null : id.toString(), mergedSetList); |
aoqi@0 | 104 | } |
aoqi@0 | 105 | } |
aoqi@0 | 106 | } |