1 /*
2 * Copyright 2005-2007 The Kuali Foundation
3 *
4 * Licensed under the Educational Community License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.opensource.org/licenses/ecl2.php
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.kuali.rice.krad.rule.event;
17
18 import org.apache.commons.lang.StringUtils;
19 import org.apache.log4j.Logger;
20 import org.kuali.rice.krad.document.Document;
21 import org.kuali.rice.krad.util.KRADPropertyConstants;
22
23 import java.util.ArrayList;
24 import java.util.List;
25
26 /**
27 * Abstract superclass for document-related events.
28 */
29 abstract public class KualiDocumentEventBase implements KualiDocumentEvent {
30 private static final Logger LOG = Logger.getLogger(KualiDocumentEventBase.class);
31
32 private final String description;
33 private final String errorPathPrefix;
34 protected Document document;
35
36 /**
37 *
38 * As a general rule, business rule classes should not change the original object. This constructor was created so that
39 * PreRulesCheckEvent, a UI level rule checker, can make changes.
40 *
41 * @param description
42 * @param errorPathPrefix
43 */
44 protected KualiDocumentEventBase(String description, String errorPathPrefix) {
45 this.description = description;
46 this.errorPathPrefix = errorPathPrefix;
47 }
48
49 /**
50 * Constructs a KualiEvent with the given description and errorPathPrefix for the given document.
51 *
52 * @param errorPathPrefix
53 * @param document
54 * @param description
55 */
56 public KualiDocumentEventBase(String description, String errorPathPrefix, Document document) {
57 this.description = description;
58 this.errorPathPrefix = errorPathPrefix;
59 this.document = document;
60
61 LOG.debug(description);
62 }
63
64
65 /**
66 * @see org.kuali.rice.krad.rule.event.KualiDocumentEvent#getDocument()
67 */
68 public final Document getDocument() {
69 return document;
70 }
71
72 /**
73 * @see org.kuali.rice.krad.rule.event.KualiDocumentEvent#getName()
74 */
75 public final String getName() {
76 return this.getClass().getName();
77 }
78
79 /**
80 * @return a description of this event
81 */
82 public final String getDescription() {
83 return description;
84 }
85
86 /**
87 * @see org.kuali.rice.krad.rule.event.KualiDocumentEvent#getErrorPathPrefix()
88 */
89 public String getErrorPathPrefix() {
90 return errorPathPrefix;
91 }
92
93
94 /**
95 * @see java.lang.Object#toString()
96 */
97 @Override
98 public String toString() {
99 return getName();
100 }
101
102 /**
103 * @see org.kuali.rice.krad.rule.event.KualiDocumentEvent#validate()
104 */
105 public void validate() {
106 if (getDocument() == null) {
107 throw new IllegalArgumentException("invalid (null) event document");
108 }
109 }
110
111 /**
112 * @see org.kuali.rice.krad.rule.event.KualiDocumentEvent#generateEvents()
113 */
114 public List<KualiDocumentEvent> generateEvents() {
115 return new ArrayList<KualiDocumentEvent>();
116 }
117
118 /**
119 * Provides null-safe access to the documentNumber of the given document.
120 *
121 * @param document
122 * @return String containing the documentNumber of the given document, or some indication of why the documentNumber isn't
123 * accessible
124 */
125 protected static String getDocumentId(Document document) {
126 String docId = "(null document)";
127
128 if (document != null) {
129 String documentNumber = document.getDocumentNumber();
130 if (StringUtils.isBlank(documentNumber)) {
131 docId = "(blank " + KRADPropertyConstants.DOCUMENT_NUMBER + ")";
132 }
133 else {
134 docId = documentNumber;
135 }
136 }
137
138 return docId;
139 }
140 }