public void serve(
CallContext context,
CmisService service,
String repositoryId,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
assert context != null;
assert service != null;
assert repositoryId != null;
assert request != null;
assert response != null;
// get parameters
String changeLogToken = getStringParameter(request, Constants.PARAM_CHANGE_LOG_TOKEN);
Boolean includeProperties = getBooleanParameter(request, Constants.PARAM_PROPERTIES);
String filter = getStringParameter(request, Constants.PARAM_FILTER);
Boolean includePolicyIds = getBooleanParameter(request, Constants.PARAM_POLICY_IDS);
Boolean includeAcl = getBooleanParameter(request, Constants.PARAM_ACL);
BigInteger maxItems = getBigIntegerParameter(request, Constants.PARAM_MAX_ITEMS);
// execute
if (stopBeforeService(service)) {
return;
}
Holder<String> changeLogTokenHolder = new Holder<String>(changeLogToken);
ObjectList changes =
service.getContentChanges(
repositoryId,
changeLogTokenHolder,
includeProperties,
filter,
includePolicyIds,
includeAcl,
maxItems,
null);
if (stopAfterService(service)) {
return;
}
if (changes == null) {
throw new CmisRuntimeException("Changes are null!");
}
// set headers
response.setStatus(HttpServletResponse.SC_OK);
response.setContentType(Constants.MEDIATYPE_FEED);
// write XML
AtomFeed feed = new AtomFeed();
feed.startDocument(response.getOutputStream(), getNamespaces(service));
feed.startFeed(true);
// write basic Atom feed elements
GregorianCalendar now = new GregorianCalendar();
feed.writeFeedElements(
"contentChanges", null, "", "Content Change", now, null, changes.getNumItems());
// write links
UrlBuilder baseUrl = compileBaseUrl(request, repositoryId);
feed.writeServiceLink(baseUrl.toString(), repositoryId);
UrlBuilder selfLink = compileUrlBuilder(baseUrl, RESOURCE_CHANGES, null);
selfLink.addParameter(Constants.PARAM_CHANGE_LOG_TOKEN, changeLogToken);
selfLink.addParameter(Constants.PARAM_PROPERTIES, includeProperties);
selfLink.addParameter(Constants.PARAM_FILTER, filter);
selfLink.addParameter(Constants.PARAM_POLICY_IDS, includePolicyIds);
selfLink.addParameter(Constants.PARAM_ACL, includeAcl);
selfLink.addParameter(Constants.PARAM_MAX_ITEMS, maxItems);
feed.writeSelfLink(selfLink.toString(), null);
if (changeLogTokenHolder.getValue() != null) {
if (Boolean.TRUE.equals(changes.hasMoreItems())) {
UrlBuilder nextLink = compileUrlBuilder(baseUrl, RESOURCE_CHANGES, null);
nextLink.addParameter(Constants.PARAM_CHANGE_LOG_TOKEN, changeLogTokenHolder.getValue());
nextLink.addParameter(Constants.PARAM_PROPERTIES, includeProperties);
nextLink.addParameter(Constants.PARAM_FILTER, filter);
nextLink.addParameter(Constants.PARAM_POLICY_IDS, includePolicyIds);
nextLink.addParameter(Constants.PARAM_ACL, includeAcl);
nextLink.addParameter(Constants.PARAM_MAX_ITEMS, maxItems);
feed.writeNextLink(nextLink.toString());
}
// The CMIS spec says that the AtomPub binding doesn't provide
// the change log token. We are doing it anyway.
XMLStreamWriter writer = feed.getWriter();
writer.writeStartElement(
XMLConstants.PREFIX_APACHE_CHEMISTY,
"changeLogToken",
XMLConstants.NAMESPACE_APACHE_CHEMISTRY);
writer.writeNamespace(
XMLConstants.PREFIX_APACHE_CHEMISTY, XMLConstants.NAMESPACE_APACHE_CHEMISTRY);
writer.writeCharacters(changeLogTokenHolder.getValue());
writer.writeEndElement();
}
// write entries
if (changes.getObjects() != null) {
AtomEntry entry = new AtomEntry(feed.getWriter());
for (ObjectData object : changes.getObjects()) {
if (object == null) {
continue;
}
writeContentChangesObjectEntry(
service,
entry,
object,
null,
repositoryId,
null,
null,
baseUrl,
false,
context.getCmisVersion());
}
}
// write extensions
feed.writeExtensions(changes);
// we are done
feed.endFeed();
feed.endDocument();
}
