I was hoping jboss would start the transaction for me, when my http request
happened, and then close it when it was done. But no go. So I wrote the
servlet filter below, and it all works. I just hoped the container would take
care of it for me. Maybe in the future, when we have more time, I will try out
Seam.
| public class TransactionFilter implements Filter {
| FilterConfig config = null;
|
| public void init(FilterConfig arg0) throws ServletException {
| config=arg0;
| }
|
| public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
|
| InitialContext ctx;
| UserTransaction ut = null;
| try {
| ctx = new InitialContext();
| ut = (UserTransaction) ctx.lookup("UserTransaction");
| if(Status.STATUS_NO_TRANSACTION == ut.getStatus()) {
| ut.begin();
| } else {
| ut = null;
| }
| } catch (Exception e) {
| config.getServletContext().log("Error getting context and
beginning transaction", e);
| }
|
|
| try {
| chain.doFilter(request, response);
| if((ut != null) && (Status.STATUS_ACTIVE == ut.getStatus())) {
| ut.commit();
| }
| } catch (Exception e) {
| config.getServletContext().log("Error in filter or commit", e);
| try {
| if((ut != null && (Status.STATUS_ACTIVE == ut.getStatus()))) {
| ut.rollback();
| }
| } catch (Exception e1) {
| config.getServletContext().log("Error rolling back exception",
e1);
| }
| } finally {
|
| }
| }
|
| public void destroy() {
| }
| }
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