1 /*
2 * Copyright 2007-2008 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.kcb.exception;
17
18 import java.util.ArrayList;
19 import java.util.Iterator;
20 import java.util.List;
21
22 /**
23 * This class is a value added datastructure that is used to house a list of Exceptions and is
24 * recognized as an Exception so that it can be thrown from methods and handled like an Exception.
25 * @author Kuali Rice Team (rice.collab@kuali.org)
26 */
27 public class ErrorList extends Exception {
28 private static final long serialVersionUID = -8045847343472018601L;
29
30 private List<String> errorList;
31
32 /**
33 * Constructs a ErrorList instance.
34 */
35 public ErrorList() {
36 errorList = new ArrayList<String>();
37 }
38
39 /**
40 * This method checks to see if the list is empty or not.
41 * @return boolean
42 */
43 public boolean isEmpty() {
44 return errorList.isEmpty();
45 }
46
47 /**
48 * This method adds errors to the error list.
49 * @param error
50 */
51 public void addError(String error) {
52 this.errorList.add(error);
53 }
54
55 /**
56 * This method retreives all of the errors in the list.
57 * @return List
58 */
59 public List<String> getErrors() {
60 return this.errorList;
61 }
62
63 /**
64 * This method adds a list of errors to the error list.
65 * @param errors
66 */
67 public void addErrors(ErrorList errors) {
68 this.errorList.addAll(errors.errorList);
69 }
70
71 /**
72 * This method returns a string representation of all of the errors in the error list.
73 * @see java.lang.Throwable#getMessage()
74 */
75 public String getMessage() {
76 return toString();
77 }
78
79 /**
80 * This method is responsible for concatenating all of the errors in the error list together.
81 * @see java.lang.Throwable#toString()
82 */
83 public String toString() {
84 StringBuffer buf = new StringBuffer("errors=(");
85
86 for (Iterator<String> i = errorList.iterator(); i.hasNext();) {
87 buf.append(i.next());
88 if (i.hasNext()) {
89 buf.append(";");
90 }
91 }
92 buf.append(")");
93
94 return buf.toString();
95 }
96 }