@Override
public Map<String, String> getResponseHeaders() {
Map<String, String> responseHeaders = new HashMap<String, String>(3);
long lastModified = info.getLastModified();
responseHeaders.put("Last-Modified", Utils.formatRFC1123(new Date(lastModified)));
responseHeaders.put(
"Expires", Utils.formatRFC1123(new Date(System.currentTimeMillis() + info.getMaxAge())));
responseHeaders.put(
"Etag", String.format("W/\"%d-%d\"", info.getContentLength(), lastModified));
responseHeaders.put(
"Pragma", ""); // Explicitly set empty pragma to prevent some containers from setting it.
return responseHeaders;
}
/**
* Converts a <code>Iterable<E></code> to a <code>List<E></code>. Useful when you want
* to iterate over an <code>Iterable</code>, which includes any type of <code>Collection</code>
* (which includes e.g. a <code>Set</code>) in for example <code><ui:repeat></code> and
* <code><h:dataTable></code>.
*
* <p>When iterating specifically over a Set using the above mentioned components {@link
* Converters#setToList(Set)} is an alternative to this.
*
* @param <E> The generic iterable element type.
* @param iterable The Iterable to be converted to a List.
* @return The converted List.
* @since 1.5
*/
public static <E> List<E> iterableToList(Iterable<E> iterable) {
if (iterable == null) {
return null;
}
return Utils.iterableToList(iterable);
}
@Override
public boolean userAgentNeedsUpdate(FacesContext context) {
String ifModifiedSince =
context.getExternalContext().getRequestHeaderMap().get("If-Modified-Since");
if (ifModifiedSince != null) {
try {
return info.getLastModified() > Utils.parseRFC1123(ifModifiedSince).getTime();
} catch (ParseException ignore) {
return true;
}
}
return true;
}
/**
* Encode the conditional comment.
*
* @throws IllegalArgumentException When <code>if</code> attribute is not specified.
*/
@Override
public void encodeChildren(final FacesContext context) throws IOException {
final String _if = getIf();
if (Utils.isEmpty(_if)) {
throw new IllegalArgumentException(ConditionalComment.ERROR_MISSING_IF);
}
final ResponseWriter writer = context.getResponseWriter();
writer.write("<!--[if ");
writer.writeText(_if, this, "if");
writer.write("]>");
super.encodeChildren(context);
writer.write("<![endif]-->");
}
