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Java > Open Source Codes > org > apache > james > util > RFC2822Headers


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17
18 package org.apache.james.util;
19
20 /**
21  * This utility class provides the set of header names explicitly defined in RFC 2822
22  *
23  */
24 public class RFC2822Headers {
25
26     // See Section 3.6.1 of RFC 2822
27
28     /**
29      * The name of the RFC 2822 header that stores the mail date.
30      */
31     public final static String JavaDoc DATE = "Date";
32
33     // See Section 3.6.2 of RFC 2822
34
35     /**
36      * The name of the RFC 2822 header that stores the mail author(s).
37      */
38     public final static String JavaDoc FROM = "From";
39
40     /**
41      * The name of the RFC 2822 header that stores the actual mail transmission agent,
42      * if this differs from the author of the message.
43      */
44     public final static String JavaDoc SENDER = "Sender";
45
46     /**
47      * The name of the RFC 2822 header that stores the reply-to address.
48      */
49     public final static String JavaDoc REPLY_TO = "Reply-To";
50
51     // See Section 3.6.3 of RFC 2822
52
53     /**
54      * The name of the RFC 2822 header that stores the primary mail recipients.
55      */
56     public final static String JavaDoc TO = "To";
57
58     /**
59      * The name of the RFC 2822 header that stores the carbon copied mail recipients.
60      */
61     public final static String JavaDoc CC = "Cc";
62
63     /**
64      * The name of the RFC 2822 header that stores the blind carbon copied mail recipients.
65      */
66     public final static String JavaDoc BCC = "Bcc";
67
68     // See Section 3.6.4 of RFC 2822
69
70     /**
71      * The name of the RFC 2822 header that stores the message id.
72      */
73     public final static String JavaDoc MESSAGE_ID = "Message-ID";
74
75     /**
76      * A common variation on the name of the RFC 2822 header that
77      * stores the message id. This is needed for certain filters and
78      * processing of incoming mail.
79      */
80     public final static String JavaDoc MESSAGE_ID_VARIATION = "Message-Id";
81
82     /**
83      * The name of the RFC 2822 header that stores the message id of the message
84      * that to which this email is a reply.
85      */
86     public final static String JavaDoc IN_REPLY_TO = "In-Reply-To";
87
88     /**
89      * The name of the RFC 2822 header that is used to identify the thread to
90      * which this message refers.
91      */
92     public final static String JavaDoc REFERENCES = "References";
93
94     // See Section 3.6.5 of RFC 2822
95
96     /**
97      * The name of the RFC 2822 header that stores the subject.
98      */
99     public final static String JavaDoc SUBJECT = "Subject";
100
101     /**
102      * The name of the RFC 2822 header that stores human-readable comments.
103      */
104     public final static String JavaDoc COMMENTS = "Comments";
105
106     /**
107      * The name of the RFC 2822 header that stores human-readable keywords.
108      */
109     public final static String JavaDoc KEYWORDS = "Keywords";
110
111     // See Section 3.6.6 of RFC 2822
112
113     /**
114      * The name of the RFC 2822 header that stores the date the message was resent.
115      */
116     public final static String JavaDoc RESENT_DATE = "Resent-Date";
117
118     /**
119      * The name of the RFC 2822 header that stores the originator of the resent message.
120      */
121     public final static String JavaDoc RESENT_FROM = "Resent-From";
122
123     /**
124      * The name of the RFC 2822 header that stores the transmission agent
125      * of the resent message.
126      */
127     public final static String JavaDoc RESENT_SENDER = "Resent-Sender";
128
129     /**
130      * The name of the RFC 2822 header that stores the recipients
131      * of the resent message.
132      */
133     public final static String JavaDoc RESENT_TO = "Resent-To";
134
135     /**
136      * The name of the RFC 2822 header that stores the carbon copied recipients
137      * of the resent message.
138      */
139     public final static String JavaDoc RESENT_CC = "Resent-Cc";
140
141     /**
142      * The name of the RFC 2822 header that stores the blind carbon copied recipients
143      * of the resent message.
144      */
145     public final static String JavaDoc RESENT_BCC = "Resent-Bcc";
146
147     /**
148      * The name of the RFC 2822 header that stores the message id
149      * of the resent message.
150      */
151     public final static String JavaDoc RESENT_MESSAGE_ID = "Resent-Message-ID";
152
153     // See Section 3.6.7 of RFC 2822
154
155     /**
156      * The name of the RFC 2822 headers that store the tracing data for the return path.
157      */
158     public final static String JavaDoc RETURN_PATH = "Return-Path";
159
160     /**
161      * The name of the RFC 2822 headers that store additional tracing data.
162      */
163     public final static String JavaDoc RECEIVED = "Received";
164
165     // MIME headers
166
167     /**
168      * The name of the MIME header that stores the content type.
169      */
170     public final static String JavaDoc CONTENT_TYPE = "Content-Type";
171
172     /**
173      * Private constructor to prevent instantiation
174      */
175     private RFC2822Headers() {}
176
177 }
178
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