RE: thread comunicating with ServletContexts
Hi, I was tired and obviously not thinking straigt as the error I was doing was calling thread.run but not thread.start... And that was the reason for application lockup.. It works fine right now. Thanx -reynir -Original Message- From: Nathan Smith [mailto:[EMAIL PROTECTED]] Sent: 28. nóvember 2002 22:30 To: Tomcat Users List Subject: Re: thread comunicating with ServletContexts I have implemented Scheduler program that has a thread monitoring a database table for any new tasks that need to be run in the background. At the moment these tasks consist of just servlets, but should probably work with a class that extend a Struts Action. I created an HttpURLConnection from a URL object, which contains the URI part that normally invokes a servlet. i.e. /servlet/some.servlet.Servlet with the context name on the front of course, and the server name, port, and scheme (HTTP) from the ServletContext object. Once you are connected you can then fiddle around with connection settings. Create an OutputStream to write to the servlet and as InputStream to read from the servlet. I found that I had to write to the servlet and then close the writer and then open the input stream and close it in that order. Hope this helps, Nathan. - Original Message - From: Reynir Hübner [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, November 29, 2002 10:19 AM Subject: thread comunicating with ServletContexts Hi, I have a slight problem I am starting up a thread when application starts with a ServletContextListener implementation. The purpouse of the thread is to monitor a directory that has few xml descriptor files in it. Attributes from the XML files are parsed into the ServletContext on startup of the ServletContext, and then it's possible to trigger reload by executing a servlet, that does the reload. Right now the initial load and the reload by servlet are working, The thread is monitoring the directory every 10 seconds it checks if anything has been modified (works fine). The problem I am facing right now is to find a way to pass the attributes read by the Thread (instanciated in a listener) from the xml files, into the ServletContext. One way of doing it might be to run a HTTPUrlConnect against the servlet that can then reload the attributes from the xml files, that might work, but then I will have to worrie about some authentication, etc. That I dont want to have to think about right now. I tried passing a ServletContext variable to the ServletContext to the Thread, but that seems to lock up the webapplication, meaning the thread runs fine but nothing else. I'm tired and I think I must be not thinking straight, can someone help me ? :) Thanx -reynir -- To unsubscribe, e-mail: mailto:tomcat-user- [EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
thread comunicating with ServletContexts
Hi, I have a slight problem I am starting up a thread when application starts with a ServletContextListener implementation. The purpouse of the thread is to monitor a directory that has few xml descriptor files in it. Attributes from the XML files are parsed into the ServletContext on startup of the ServletContext, and then it's possible to trigger reload by executing a servlet, that does the reload. Right now the initial load and the reload by servlet are working, The thread is monitoring the directory every 10 seconds it checks if anything has been modified (works fine). The problem I am facing right now is to find a way to pass the attributes read by the Thread (instanciated in a listener) from the xml files, into the ServletContext. One way of doing it might be to run a HTTPUrlConnect against the servlet that can then reload the attributes from the xml files, that might work, but then I will have to worrie about some authentication, etc. That I dont want to have to think about right now. I tried passing a ServletContext variable to the ServletContext to the Thread, but that seems to lock up the webapplication, meaning the thread runs fine but nothing else. I'm tired and I think I must be not thinking straight, can someone help me ? :) Thanx -reynir
Re: thread comunicating with ServletContexts
I have implemented Scheduler program that has a thread monitoring a database table for any new tasks that need to be run in the background. At the moment these tasks consist of just servlets, but should probably work with a class that extend a Struts Action. I created an HttpURLConnection from a URL object, which contains the URI part that normally invokes a servlet. i.e. /servlet/some.servlet.Servlet with the context name on the front of course, and the server name, port, and scheme (HTTP) from the ServletContext object. Once you are connected you can then fiddle around with connection settings. Create an OutputStream to write to the servlet and as InputStream to read from the servlet. I found that I had to write to the servlet and then close the writer and then open the input stream and close it in that order. Hope this helps, Nathan. - Original Message - From: Reynir Hübner [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, November 29, 2002 10:19 AM Subject: thread comunicating with ServletContexts Hi, I have a slight problem I am starting up a thread when application starts with a ServletContextListener implementation. The purpouse of the thread is to monitor a directory that has few xml descriptor files in it. Attributes from the XML files are parsed into the ServletContext on startup of the ServletContext, and then it's possible to trigger reload by executing a servlet, that does the reload. Right now the initial load and the reload by servlet are working, The thread is monitoring the directory every 10 seconds it checks if anything has been modified (works fine). The problem I am facing right now is to find a way to pass the attributes read by the Thread (instanciated in a listener) from the xml files, into the ServletContext. One way of doing it might be to run a HTTPUrlConnect against the servlet that can then reload the attributes from the xml files, that might work, but then I will have to worrie about some authentication, etc. That I dont want to have to think about right now. I tried passing a ServletContext variable to the ServletContext to the Thread, but that seems to lock up the webapplication, meaning the thread runs fine but nothing else. I'm tired and I think I must be not thinking straight, can someone help me ? :) Thanx -reynir -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
