public void execute(WebScriptRequest req, WebScriptResponse res) throws IOException {
final String value = req.getParameter(P_VALUE);
NodeRef nodeRef = null;
if (null != value && NodeRef.isNodeRef(value)) {
nodeRef = new NodeRef(value);
}
final String engine = req.getParameter(P_ENGINE);
String mimetype = req.getParameter(P_MIMETYPE);
mimetype = null == mimetype ? D_MIMETYPE : mimetype;
final ByteArrayOutputStream output = new ByteArrayOutputStream();
if (req.getServerPath().contains("/new")) {
final String reference = referenceProviderService.getNewReference(engine, null);
generateBarcode(reference, output, mimetype);
} else {
String barcodeValue = value;
if (null != nodeRef) {
barcodeValue = referenceProviderService.getExistingReference(nodeRef);
}
if (null != value && !value.isEmpty()) {
generateBarcode(barcodeValue, output, mimetype);
} else {
logger.debug(String.format("No barcode generated for value '%s'", value));
}
}
res.setContentType(mimetype);
// res.setContentEncoding(reader.getEncoding());
res.setHeader("Content-Length", Long.toString(output.size()));
// get the content and stream directly to the response output stream
// assuming the repository is capable of streaming in chunks, this should allow large files
// to be streamed directly to the browser response stream.
try {
res.getOutputStream().write(output.toByteArray());
} catch (SocketException e1) {
// the client cut the connection - our mission was accomplished apart from a little error
// message
if (logger.isInfoEnabled()) logger.info("Client aborted stream read.");
} catch (ContentIOException e2) {
if (logger.isInfoEnabled()) logger.info("Client aborted stream read.");
}
}
