/**
* Invokes the next filter in the chain or the final servlet at the end of the chain.
*
* @param request the servlet request
* @param response the servlet response
* @since Servlet 2.3
*/
@Override
public void doFilter(ServletRequest request, ServletResponse response)
throws ServletException, IOException {
Thread thread = Thread.currentThread();
ClassLoader oldLoader = thread.getContextClassLoader();
WebApp webApp = _webApp;
UserTransactionImpl ut = null;
if (_isTop) ut = _utm.getUserTransaction();
try {
thread.setContextClassLoader(webApp.getClassLoader());
if (!webApp.enterWebApp() && webApp.getConfigException() == null) {
if (response instanceof HttpServletResponse) {
HttpServletResponse res = (HttpServletResponse) response;
res.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
}
return;
}
_next.doFilter(request, response);
} catch (Throwable e) {
_errorPageManager.sendServletError(e, request, response);
} finally {
webApp.exitWebApp();
// put finish() before access log so the session isn't tied up while
// logging
// needed for things like closing the session
if (request instanceof HttpServletRequestImpl)
((HttpServletRequestImpl) request).finishInvocation();
// server/1ld5
if (_isTop) {
((CauchoResponse) response).close();
try {
if (ut != null) ut.abortTransaction();
} catch (Throwable e) {
log.log(Level.WARNING, e.toString(), e);
}
}
thread.setContextClassLoader(oldLoader);
}
}
/** Finds the pool item joined to this one. return null. */
ManagedPoolItem findJoin(UserTransactionImpl uTrans, ManagedPoolItem item) {
if (!uTrans.isActive()) return null;
ArrayList<ManagedXAResource> poolItems = uTrans.getXaResources();
int length = poolItems.size();
for (int i = 0; i < length; i++) {
ManagedXAResource resource = poolItems.get(i);
if (resource instanceof ManagedPoolItem) {
ManagedPoolItem poolItem = (ManagedPoolItem) resource;
if (poolItem.isJoin(item)) return poolItem;
}
}
return null;
}
/** Allocates a resource matching the parameters. If none matches, return null. */
private UserPoolItem allocateShared(
UserTransactionImpl transaction,
ManagedConnectionFactory mcf,
Subject subject,
ConnectionRequestInfo info) {
if (!transaction.isActive()) return null;
ArrayList<ManagedXAResource> poolItems = transaction.getXaResources();
int length = poolItems.size();
for (int i = 0; i < length; i++) {
ManagedXAResource xaResource = poolItems.get(i);
if (xaResource instanceof ManagedPoolItem) {
ManagedPoolItem poolItem = (ManagedPoolItem) xaResource;
UserPoolItem item = poolItem.allocateXA(mcf, subject, info);
if (item != null) return item;
}
}
return null;
}