/**
* Get the binary content of a datastream
*
* @param pid persistent identifier of the digital object
* @param dsid datastream identifier
* @return Binary blob
* @throws RepositoryException
*/
@GET
@Path("/{dsid}/content")
public Response getDatastreamContent(
@PathParam("pid") final String pid, @PathParam("dsid") final String dsid)
throws RepositoryException {
final Datastream ds = DatastreamService.getDatastream(pid, dsid);
return ok(ds.getContent(), ds.getMimeType()).build();
}
/**
* Get the datastream profile of a datastream
*
* @param pid persistent identifier of the digital object
* @param dsid datastream identifier
* @return 200
* @throws RepositoryException
* @throws IOException
* @throws TemplateException
*/
@GET
@Path("/{dsid}")
@Produces({TEXT_XML, APPLICATION_JSON})
public DatastreamProfile getDatastream(
@PathParam("pid") final String pid, @PathParam("dsid") final String dsId)
throws RepositoryException, IOException {
logger.trace("Executing getDatastream() with dsId: " + dsId);
Datastream ds = DatastreamService.getDatastream(pid, dsId);
logger.debug("Retrieved dsNode: " + ds.getNode().getName());
return getDSProfile(ds);
}
/**
* Get the binary content of a datastream
*
* @param pathList
* @return Binary blob
* @throws RepositoryException
*/
@GET
public Response getContent(
@PathParam("path") List<PathSegment> pathList, @Context final Request request)
throws RepositoryException {
String path = toPath(pathList);
final Datastream ds = datastreamService.getDatastream(path);
final EntityTag etag = new EntityTag(ds.getContentDigest().toString());
final Date date = ds.getLastModifiedDate();
final Date roundedDate = new Date();
roundedDate.setTime(date.getTime() - date.getTime() % 1000);
ResponseBuilder builder = request.evaluatePreconditions(roundedDate, etag);
final CacheControl cc = new CacheControl();
cc.setMaxAge(0);
cc.setMustRevalidate(true);
if (builder == null) {
builder = Response.ok(ds.getContent(), ds.getMimeType());
}
return builder.cacheControl(cc).lastModified(date).tag(etag).build();
}
private DatastreamProfile getDSProfile(Datastream ds) throws RepositoryException, IOException {
logger.trace("Executing getDSProfile() with node: " + ds.getDsId());
final DatastreamProfile dsProfile = new DatastreamProfile();
dsProfile.dsID = ds.getDsId();
dsProfile.pid = ds.getObject().getName();
logger.trace("Retrieved datastream " + ds.getDsId() + "'s parent: " + dsProfile.pid);
dsProfile.dsLabel = ds.getLabel();
logger.trace("Retrieved datastream " + ds.getDsId() + "'s label: " + ds.getLabel());
dsProfile.dsState = A;
dsProfile.dsMIME = ds.getMimeType();
dsProfile.dsSize = getNodePropertySize(ds.getNode()) + ds.getContentSize();
dsProfile.dsCreateDate = ds.getNode().getProperty("jcr:created").getString();
return dsProfile;
}
