1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
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.apache.commons.scxml2.env;
18
19 import java.io.Serializable;
20
21 import org.apache.commons.logging.Log;
22 import org.apache.commons.logging.LogFactory;
23 import org.xml.sax.ErrorHandler;
24 import org.xml.sax.SAXParseException;
25
26 /**
27 * Custom error handler that logs the parsing errors in the
28 * SCXML document.
29 */
30 public class SimpleErrorHandler implements ErrorHandler, Serializable {
31
32 /** Serial version UID. */
33 private static final long serialVersionUID = 1L;
34 /** Message prefix. */
35 private static final String MSG_PREFIX = "SCXML SAX Parsing: ";
36 /** Message postfix. */
37 private static final String MSG_POSTFIX = " Correct the SCXML document.";
38
39 /** Log. */
40 private Log log = LogFactory.getLog(getClass());
41
42 /**
43 * Constructor.
44 */
45 public SimpleErrorHandler() {
46 super();
47 }
48
49 /**
50 * @see ErrorHandler#error(SAXParseException)
51 */
52 public void error(final SAXParseException exception) {
53 if (log.isErrorEnabled()) {
54 log.error(MSG_PREFIX + exception.getMessage() + MSG_POSTFIX,
55 exception);
56 }
57 }
58
59 /**
60 * @see ErrorHandler#fatalError(SAXParseException)
61 */
62 public void fatalError(final SAXParseException exception) {
63 if (log.isFatalEnabled()) {
64 log.fatal(MSG_PREFIX + exception.getMessage() + MSG_POSTFIX,
65 exception);
66 }
67 }
68
69 /**
70 * @see ErrorHandler#warning(SAXParseException)
71 */
72 public void warning(final SAXParseException exception) {
73 if (log.isWarnEnabled()) {
74 log.warn(MSG_PREFIX + exception.getMessage() + MSG_POSTFIX,
75 exception);
76 }
77 }
78 }
79