1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 package org.apache.myfaces.tobago.internal.util;
21
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
24
25 import java.lang.invoke.MethodHandles;
26
27
28 public final class Deprecation {
29
30 // to prevent instantiation
31 private Deprecation() {
32 }
33
34 /**
35 * This Logger object should help to detect the usage of deprecated code.
36 * The main reason for this class is the lack of a "deprecated concept"
37 * for tag libraries. Thought the designer of a Tobago page cannot see
38 * in his IDE that a tag or attribute is deprecated.
39 * <p>
40 * The Tobago Java code will log into this Logger object, with
41 * <dl>
42 * <dt><code>error</code></dt>
43 * <dd>when the code is deprecated with a loss of function, or</dd>
44 * <dt><code>warn</code></dt>
45 * <dd>when the code is deprecated, but still works.</dd>
46 * </dl>
47 * <p>
48 * This Logger category can be switched off, in production environment without
49 * affecting the normal logging category.
50 */
51 public static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
52
53 }