001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common Development
008: * and Distribution License("CDDL") (collectively, the "License"). You
009: * may not use this file except in compliance with the License. You can obtain
010: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
011: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
012: * language governing permissions and limitations under the License.
013: *
014: * When distributing the software, include this License Header Notice in each
015: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
016: * Sun designates this particular file as subject to the "Classpath" exception
017: * as provided by Sun in the GPL Version 2 section of the License file that
018: * accompanied this code. If applicable, add the following below the License
019: * Header, with the fields enclosed by brackets [] replaced by your own
020: * identifying information: "Portions Copyrighted [year]
021: * [name of copyright owner]"
022: *
023: * Contributor(s):
024: *
025: * If you wish your version of this file to be governed by only the CDDL or
026: * only the GPL Version 2, indicate your decision by adding "[Contributor]
027: * elects to include this software in this distribution under the [CDDL or GPL
028: * Version 2] license." If you don't indicate a single choice of license, a
029: * recipient has the option to distribute your version of this file under
030: * either the CDDL, the GPL Version 2 or to extend the choice of license to
031: * its licensees as provided above. However, if you add GPL Version 2 code
032: * and therefore, elected the GPL Version 2 license, then the option applies
033: * only if the new code is made subject to such option by the copyright
034: * holder.
035: */
036:
037: package com.sun.xml.ws.policy;
038:
039: import java.util.Arrays;
040: import java.util.Iterator;
041:
042: /**
043: * A special policy implementation that assures that only no or single policy alternative is possible within this type of policy.
044: *
045: * @author Marek Potociar
046: */
047: public final class NestedPolicy extends Policy {
048: private static final String NESTED_POLICY_TOSTRING_NAME = "nested policy";
049:
050: private NestedPolicy(final AssertionSet set) {
051: super (NESTED_POLICY_TOSTRING_NAME, Arrays
052: .asList(new AssertionSet[] { set }));
053: }
054:
055: private NestedPolicy(final String name, final String policyId,
056: final AssertionSet set) {
057: super (NESTED_POLICY_TOSTRING_NAME, name, policyId, Arrays
058: .asList(new AssertionSet[] { set }));
059: }
060:
061: static NestedPolicy createNestedPolicy(final AssertionSet set) {
062: return new NestedPolicy(set);
063: }
064:
065: static NestedPolicy createNestedPolicy(final String name,
066: final String policyId, final AssertionSet set) {
067: return new NestedPolicy(name, policyId, set);
068: }
069:
070: /**
071: * Returns the AssertionSet instance representing a single policy alterantive held wihtin this nested policy object.
072: * If the nested policy represents a policy with no alternatives (i.e. nothing is allowed) the method returns {@code null}.
073: *
074: * @return nested policy alternative represented by AssertionSet object. May return {@code null} in case the nested policy
075: * represents 'nothing allowed' policy.
076: */
077: public AssertionSet getAssertionSet() {
078: final Iterator<AssertionSet> iterator = iterator();
079: if (iterator.hasNext()) {
080: return iterator.next();
081: } else {
082: return null;
083: }
084: }
085:
086: /**
087: * An {@code Object.equals(Object obj)} method override.
088: */
089: @Override
090: public boolean equals(final Object obj) {
091: if (this == obj) {
092: return true;
093: }
094:
095: if (!(obj instanceof NestedPolicy)) {
096: return false;
097: }
098:
099: final NestedPolicy that = (NestedPolicy) obj;
100:
101: return super .equals(that);
102: }
103:
104: @Override
105: public int hashCode() {
106: return super .hashCode();
107: }
108:
109: /**
110: * An {@code Object.toString()} method override.
111: */
112: @Override
113: public String toString() {
114: return toString(0, new StringBuffer()).toString();
115: }
116:
117: /**
118: * A helper method that appends indented string representation of this instance to the input string buffer.
119: *
120: * @param indentLevel indentation level to be used.
121: * @param buffer buffer to be used for appending string representation of this instance
122: * @return modified buffer containing new string representation of the instance
123: */
124: @Override
125: StringBuffer toString(final int indentLevel,
126: final StringBuffer buffer) {
127: return super.toString(indentLevel, buffer);
128: }
129: }
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