/**
* Get the binary content of a datastream
*
* @param rangeValue the range value
* @return Binary blob
* @throws IOException if io exception occurred
*/
protected Response getBinaryContent(final String rangeValue) throws IOException {
final FedoraBinary binary = (FedoraBinary) resource();
// we include an explicit etag, because the default behavior is to use the JCR node's etag, not
// the jcr:content node digest. The etag is only included if we are not within a transaction.
final String txId = TransactionServiceImpl.getCurrentTransactionId(session());
if (txId == null) {
checkCacheControlHeaders(request, servletResponse, binary, session());
}
final CacheControl cc = new CacheControl();
cc.setMaxAge(0);
cc.setMustRevalidate(true);
Response.ResponseBuilder builder;
if (rangeValue != null && rangeValue.startsWith("bytes")) {
final Range range = Range.convert(rangeValue);
final long contentSize = binary.getContentSize();
final String endAsString;
if (range.end() == -1) {
endAsString = Long.toString(contentSize - 1);
} else {
endAsString = Long.toString(range.end());
}
final String contentRangeValue =
String.format("bytes %s-%s/%s", range.start(), endAsString, contentSize);
if (range.end() > contentSize || (range.end() == -1 && range.start() > contentSize)) {
builder =
status(REQUESTED_RANGE_NOT_SATISFIABLE).header("Content-Range", contentRangeValue);
} else {
final RangeRequestInputStream rangeInputStream =
new RangeRequestInputStream(binary.getContent(), range.start(), range.size());
builder =
status(PARTIAL_CONTENT)
.entity(rangeInputStream)
.header("Content-Range", contentRangeValue);
}
} else {
final InputStream content = binary.getContent();
builder = ok(content);
}
// we set the content-type explicitly to avoid content-negotiation from getting in the way
return builder.type(binary.getMimeType()).cacheControl(cc).build();
}