1 /*
2 * Copyright 2005-2007 The Kuali Foundation
3 *
4 *
5 * Licensed under the Educational Community License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.opensource.org/licenses/ecl2.php
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.kuali.rice.kew.rule;
18
19 import java.util.ArrayList;
20 import java.util.List;
21
22 import org.kuali.rice.kew.engine.RouteContext;
23 import org.kuali.rice.kew.identity.Id;
24 import org.kuali.rice.kew.routeheader.DocumentContent;
25
26
27 /**
28 * Generic base class that implements common functionality to simplify implementing
29 * a RoleAttribute. This includes a standard qualified role name String format and simplified
30 * template methods, as well as a generic attribute content model.
31 *
32 * <p>Control flow:</p>
33 *
34 * <ol>
35 * <li>{@link #getQualifiedRoleNames(String, DocumentContent)}
36 * <ol>
37 * <li>{@link #generateQualifiedRoleNames(String, DocumentContent)}
38 * <ol>
39 * <li>{@link #getRoleNameQualifiers(String, DocumentContent)}</li>
40 * </ol>
41 * </li>
42 * </ol>
43 * </li>
44 * <li>{@link #resolveQualifiedRole(RouteContext, String, String)}
45 * <ol>
46 * <li>{@link #resolveQualifiedRole(RouteContext, QualifiedRoleName)}
47 * <ol>
48 * <li>{@link #resolveRecipients(RouteContext, QualifiedRoleName)}</li>
49 * <li>{@link #getLabelForQualifiedRoleName(QualifiedRoleName)}</li>
50 * </ol>
51 * </li>
52 * </ol>
53 * </li>
54 * </ol>
55 *
56 * @author Kuali Rice Team (rice.collab@kuali.org)
57 */
58 public abstract class GenericRoleAttribute extends GenericWorkflowAttribute implements RoleAttribute {
59 public GenericRoleAttribute() {
60 super(null);
61 }
62
63 public GenericRoleAttribute(String uniqueName) {
64 super(uniqueName);
65 }
66
67 public boolean isMatch(DocumentContent docContent, List<RuleExtension> ruleExtensions) {
68 // FIXME: ok, this MUST return true, as it IS evaluated (don't know why)
69 // maybe investigate only calling isMatch on rule attributes as it doesn't seem that
70 // matching is relevant for role attributes...is it?
71 // throw new UnsupportedOperationException("Role attributes do not implement isMatch");
72 return true;
73 }
74
75 public List<String> getQualifiedRoleNames(String roleName, DocumentContent documentContent) {
76 List<QualifiedRoleName> qualifiedRoleNames = generateQualifiedRoleNames(roleName, documentContent);
77 if (qualifiedRoleNames == null) {
78 return null;
79 }
80 List<String> q = new ArrayList<String>(qualifiedRoleNames.size());
81 for (QualifiedRoleName qrn: qualifiedRoleNames) {
82 q.add(qrn.encode());
83 }
84 return q;
85 }
86
87 /**
88 * Template method responsible for producing a list of QualifiedRoleName objects. Default implementation
89 * calls {@link #getRoleNameQualifiers(String, DocumentContent)}
90 */
91 protected List<QualifiedRoleName> generateQualifiedRoleNames(String roleName, DocumentContent documentContent) {
92 List<String> qualifiers = getRoleNameQualifiers(roleName, documentContent);
93 if (qualifiers == null) {
94 qualifiers = new ArrayList<String>(0);
95 }
96 List<QualifiedRoleName> qualifiedRoleNames = new ArrayList<QualifiedRoleName>(qualifiers.size());
97 for (String qualifier: qualifiers) {
98 qualifiedRoleNames.add(new QualifiedRoleName(roleName, qualifier));
99 }
100 return qualifiedRoleNames;
101 }
102
103 /**
104 * Template method responsible for producing qualifiers for a role name
105 */
106 protected List<String> getRoleNameQualifiers(String roleName, DocumentContent documentContent) {
107 return null;
108 }
109
110 public ResolvedQualifiedRole resolveQualifiedRole(RouteContext routeContext, String roleName, String qualifiedRoleName) {
111 QualifiedRoleName qrn = QualifiedRoleName.parse(qualifiedRoleName);
112 return resolveQualifiedRole(routeContext, qrn);
113 }
114
115 /**
116 * Template method that delegates to {@link #resolveRecipients(RouteContext, QualifiedRoleName)} and
117 * {@link #getLabelForQualifiedRoleName(QualifiedRoleName)
118 */
119 protected ResolvedQualifiedRole resolveQualifiedRole(RouteContext routeContext, QualifiedRoleName qualifiedRoleName) {
120 List<Id> recipients = resolveRecipients(routeContext, qualifiedRoleName);
121 ResolvedQualifiedRole rqr = new ResolvedQualifiedRole(getLabelForQualifiedRoleName(qualifiedRoleName),
122 recipients
123 ); // default to no annotation...
124 return rqr;
125 }
126
127 protected String getLabelForQualifiedRoleName(QualifiedRoleName qualifiedRoleName) {
128 // do what everybody else does and just use the base role name
129 return qualifiedRoleName.getBaseRoleName();
130 }
131
132 /**
133 * Template method for subclasses to implement
134 */
135 protected List<Id> resolveRecipients(RouteContext routeContext, QualifiedRoleName qualifiedRoleName) {
136 return null;
137 }
138 }