1 /**
2 * Copyright 2005-2014 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.rules.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 * @author Kuali Rice Team (rice.collab@kuali.org)
30 */
31 abstract public class DocumentEventBase extends RuleEventBase implements DocumentEvent {
32 private static final Logger LOG = Logger.getLogger(DocumentEventBase.class);
33
34 protected Document document;
35
36 /**
37 * As a general rule, business rule classes should not change the original object. This constructor was created so
38 * that PreRulesCheckEvent, a UI level rule checker, can make changes.
39 *
40 * @param description
41 * @param errorPathPrefix
42 */
43 protected DocumentEventBase(String description, String errorPathPrefix) {
44 super( description, errorPathPrefix );
45 }
46
47 /**
48 * Constructs a KualiEvent with the given description and errorPathPrefix for the given document.
49 *
50 * @param errorPathPrefix
51 * @param document
52 * @param description
53 */
54 public DocumentEventBase(String description, String errorPathPrefix, Document document) {
55 super( description, errorPathPrefix );
56 this.document = document;
57
58 LOG.debug(description);
59 }
60
61 /**
62 * @see org.kuali.rice.krad.rules.rule.event.DocumentEvent#getDocument()
63 */
64 public final Document getDocument() {
65 return document;
66 }
67
68 /**
69 * @see org.kuali.rice.krad.rules.rule.event.DocumentEvent#validate()
70 */
71 @Override
72 public void validate() {
73 if (getDocument() == null) {
74 throw new IllegalArgumentException("invalid (null) event document");
75 }
76 }
77
78 /**
79 * Provides null-safe access to the documentNumber of the given document.
80 *
81 * @param document
82 * @return String containing the documentNumber of the given document, or some indication of why the documentNumber
83 * isn't
84 * accessible
85 */
86 protected static String getDocumentId(Document document) {
87 String docId = "(null document)";
88
89 if (document != null) {
90 String documentNumber = document.getDocumentNumber();
91 if (StringUtils.isBlank(documentNumber)) {
92 docId = "(blank " + KRADPropertyConstants.DOCUMENT_NUMBER + ")";
93 } else {
94 docId = documentNumber;
95 }
96 }
97
98 return docId;
99 }
100 }