/**
* Return a list of versions that affect the resource whose uri is passed as argument. For each
* version, the result will contain the id, the creator, and the date when the version was
* recorded. Further details for a version can be requested by calling the
* /versioning/versions/{id} webservice.
*
* <p>Note that resource_uri is an optional parameter. In case no resource uri is given, all
* versions recorded by the LMF are returned, which can take a considerable amount of time. @HTTP
* 200 in case the versions were retrieved successfully @HTTP 404 in case the resource passed as
* argument resource_uri could not be found
*
* @param resource_uri the URI of the resource for which to return the versions (optional, see
* warning above)
* @return a JSON list of versions, each a map with the properties "id" (long), "creator" (uri),
* "date" (ISO 8601 String)
*/
@GET
@Produces("application/json")
@Path("/versions/list")
public Response getVersions(
@QueryParam("resource") String resource_uri,
@QueryParam("from") String dateFrom,
@QueryParam("to") String dateTo) {
try {
RepositoryConnection conn = sesameService.getConnection();
try {
if (resource_uri != null) {
URI resource = ResourceUtils.getUriResource(conn, resource_uri);
if (resource != null && resource instanceof KiWiUriResource) {
if (dateFrom == null && dateTo == null) {
return Response.ok()
.entity(formatVersions(versioningService.listVersions(resource)))
.build();
} else {
Date dateFromD = DateUtils.parseDate(dateFrom);
Date dateToD = DateUtils.parseDate(dateTo);
return Response.ok()
.entity(
formatVersions(versioningService.listVersions(resource, dateFromD, dateToD)))
.build();
}
} else {
return Response.status(Response.Status.NOT_FOUND)
.entity("resource with URI " + resource_uri + " was not found in the system")
.build();
}
} else {
if (dateFrom == null && dateTo == null) {
return Response.ok().entity(formatVersions(versioningService.listVersions())).build();
} else {
Date dateFromD = DateUtils.parseDate(dateFrom);
Date dateToD = DateUtils.parseDate(dateTo);
return Response.ok()
.entity(formatVersions(versioningService.listVersions(dateFromD, dateToD)))
.build();
}
}
} finally {
conn.commit();
conn.close();
}
} catch (RepositoryException ex) {
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(ex.getMessage()).build();
} catch (SailException ex) {
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(ex.getMessage()).build();
}
}
private Response get(URI user) {
if (userService.isAnonymous(user)) {
AccountPoJo apj = new AccountPoJo(Namespaces.ANONYMOUS_LOGIN, user.stringValue());
return Response.ok(apj, Namespaces.MIME_TYPE_JSON)
.location(java.net.URI.create(user.stringValue()))
.build();
}
try {
RepositoryConnection conn = sesameService.getConnection();
try {
final UserAccount a = accountService.getAccount(user);
if (a != null) {
AccountPoJo apj = new AccountPoJo(a.getLogin(), a.getWebId());
apj.setRoles(a.getRoles());
for (Statement t :
ResourceUtils.listOutgoing(conn, conn.getValueFactory().createURI(a.getWebId()))) {
String prop = t.getPredicate().stringValue();
if (prop.startsWith(Namespaces.NS_FOAF)) {
Value object = t.getObject();
if (object instanceof org.openrdf.model.URI) {
apj.setFoaf(prop, String.format("<%s>", object));
} else if (object instanceof Literal) {
apj.setFoaf(prop, object.toString());
}
}
}
return Response.ok(apj, Namespaces.MIME_TYPE_JSON)
.location(java.net.URI.create(user.stringValue()))
.build();
}
return Response.status(Status.NOT_FOUND)
.entity("Could not find account data of " + user)
.build();
} finally {
conn.commit();
conn.close();
}
} catch (RepositoryException e) {
// This must not happen!
return Response.serverError().entity(e).build();
}
}