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A system receiving this warning MUST NOT take any automated action, besides presenting the warning 104 * to the user. 105 * <li>214 Transformation applied MUST be added by an intermediate cache or proxy if it applies any transformation 106 * changing the content-coding (as specified in the Content-Encoding header) or media-type (as specified in the 107 * Content-Type header) of the response, or the entity-body of the response, unless this Warning code already 108 * appears in the response. 109 * <li>299 Miscellaneous persistent warning The warning text MAY include arbitrary information to be presented to a 110 * human user, or logged. A system receiving this warning MUST NOT take any automated action. 111 * </ul> 112 * 113 * <p> 114 * If an implementation sends a message with one or more Warning headers whose version is HTTP/1.0 or lower, then the 115 * sender MUST include in each warning-value a warn-date that matches the date in the response. 116 * 117 * <p> 118 * If an implementation receives a message with a warning-value that includes a warn-date, and that warn-date is 119 * different from the Date value in the response, then that warning-value MUST be deleted from the message before 120 * storing, forwarding, or using it. 121 * (This prevents bad consequences of naive caching of Warning header fields.) 122 * If all of the warning-values are deleted for this reason, the Warning header MUST be deleted as well. 123 * 124 * <h5 class='section'>See Also:</h5><ul> 125 * <li class='link'><a class="doclink" href="../../../../../index.html#juneau-rest-common">juneau-rest-common</a> 126 * <li class='extlink'><a class="doclink" href="https://www.w3.org/Protocols/rfc2616/rfc2616.html">Hypertext Transfer Protocol -- HTTP/1.1</a> 127 * </ul> 128 * 129 * @serial exclude 130 */ 131@Header("Warning") 132public class Warning extends BasicStringHeader { 133 134 //----------------------------------------------------------------------------------------------------------------- 135 // Static 136 //----------------------------------------------------------------------------------------------------------------- 137 138 private static final long serialVersionUID = 1L; 139 private static final String NAME = "Warning"; 140 141 /** 142 * Static creator. 143 * 144 * @param value 145 * The header value. 146 * <br>Can be <jk>null</jk>. 147 * @return A new header bean, or <jk>null</jk> if the value is <jk>null</jk>. 148 */ 149 public static Warning of(String value) { 150 return value == null ? null : new Warning(value); 151 } 152 153 /** 154 * Static creator with delayed value. 155 * 156 * <p> 157 * Header value is re-evaluated on each call to {@link #getValue()}. 158 * 159 * @param value 160 * The supplier of the header value. 161 * <br>Can be <jk>null</jk>. 162 * @return A new header bean, or <jk>null</jk> if the value is <jk>null</jk>. 163 */ 164 public static Warning of(Supplier<String> value) { 165 return value == null ? null : new Warning(value); 166 } 167 168 //----------------------------------------------------------------------------------------------------------------- 169 // Instance 170 //----------------------------------------------------------------------------------------------------------------- 171 172 /** 173 * Constructor. 174 * 175 * @param value 176 * The header value. 177 * <br>Can be <jk>null</jk>. 178 */ 179 public Warning(String value) { 180 super(NAME, value); 181 } 182 183 /** 184 * Constructor with delayed value. 185 * 186 * <p> 187 * Header value is re-evaluated on each call to {@link #getValue()}. 188 * 189 * @param value 190 * The supplier of the header value. 191 * <br>Can be <jk>null</jk>. 192 */ 193 public Warning(Supplier<String> value) { 194 super(NAME, value); 195 } 196}