01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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.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(
55: MSG_PREFIX + exception.getMessage() + MSG_POSTFIX,
56: exception);
57: }
58: }
59:
60: /**
61: * @see ErrorHandler#fatalError(SAXParseException)
62: */
63: public void fatalError(final SAXParseException exception) {
64: if (log.isFatalEnabled()) {
65: log.fatal(
66: MSG_PREFIX + exception.getMessage() + MSG_POSTFIX,
67: exception);
68: }
69: }
70:
71: /**
72: * @see ErrorHandler#warning(SAXParseException)
73: */
74: public void warning(final SAXParseException exception) {
75: if (log.isWarnEnabled()) {
76: log.warn(MSG_PREFIX + exception.getMessage() + MSG_POSTFIX,
77: exception);
78: }
79: }
80: }
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