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17 package org.apache.commons.scxml.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