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.mail.resolver;
18
19 import org.apache.commons.mail.DataSourceResolver;
20
21 /**
22 * Base class for various resolvers.
23 *
24 * @since 1.3
25 * @version $Id: DataSourceBaseResolver.java 1420381 2012-12-11 20:18:05Z tn $
26 */
27 public abstract class DataSourceBaseResolver implements DataSourceResolver
28 {
29 /** shall we ignore resources not found or complain with an exception */
30 private final boolean lenient;
31
32 /**
33 * Constructor.
34 */
35 public DataSourceBaseResolver()
36 {
37 this.lenient = false;
38 }
39
40 /**
41 * Constructor.
42 *
43 * @param lenient shall we ignore resources not found or throw an exception?
44 */
45 public DataSourceBaseResolver(final boolean lenient)
46 {
47 this.lenient = lenient;
48 }
49
50 /**
51 * Shall we ignore resources not found or throw an exception?
52 *
53 * @return the lenient flag
54 */
55 public boolean isLenient()
56 {
57 return lenient;
58 }
59
60 /**
61 * Is this a content id?
62 *
63 * @param resourceLocation the resource location
64 * @return true if it is a CID
65 */
66 protected boolean isCid(final String resourceLocation)
67 {
68 return resourceLocation.startsWith("cid:");
69 }
70
71 /**
72 * Is this a file URL?
73 *
74 * @param urlString the URL string
75 * @return true if it is a file URL
76 */
77 protected boolean isFileUrl(final String urlString)
78 {
79 return urlString.startsWith("file:/");
80 }
81
82 /**
83 * Is this a HTTP/HTTPS URL?
84 *
85 * @param urlString the URL string
86 * @return true if it is a HTTP/HTTPS URL
87 */
88 protected boolean isHttpUrl(final String urlString)
89 {
90 return urlString.startsWith("http://") || urlString.startsWith("https://");
91 }
92 }