Collections in ActionForm
Is is OK to use Collections (or sets, lists, maps for that matter) inside an ActionForm? We are trying to represent fairly complex multiple-choice items in our forms. Ivan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Collections in ActionForm
Have you ever deployed them in a clustered environment? Yes, all underlying objects are serializable and session replication is properly configured. -Original Message- From: Michael McGrady [mailto:[EMAIL PROTECTED] Sent: Monday, October 18, 2004 10:06 AM To: Struts Users Mailing List Subject: Re: Collections in ActionForm Ivan Vasquez wrote: Is is OK to use Collections (or sets, lists, maps for that matter) inside an ActionForm? We are trying to represent fairly complex multiple-choice items in our forms. Ivan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yes. I recommend you check out Ted Husted's book on struts if you need to know more. Michael McGrady - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Dissapearing items in cluster
Our application has a form with a multiple-selection item. We implemented it by including a List in the ActionForm. Each item in the List is a plain-old object, added from the corresponding Action. When this application runs in a 2-node cluster, items in the List dissappear at random. Session replication in the cluster is working properly. When either server is put down, the application works normally. Is it OK to use Lists in ActionForms as described? Has anybody seen this behavior in a cluster? Environment: Tomcat 5.0.28 (cluster) Struts 1.2.4 Ivan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Where Is the Best Place To Store Files?
Unless the tomcat server(s) has fileserver capabilities, you can create an NFS mount to a fileserver share and have your code create Files there. Better yet (IMO), store them in the database as BLOBs so all your data lives at a single location. The decision depends on what use is given to those files (are they likely to be modified? ready only? etc) -Original Message- From: Caroline Jen [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 13, 2004 11:30 AM To: [EMAIL PROTECTED] Subject: Where Is the Best Place To Store Files? I am using the Struts to build a web application. I am going to store some files (the files can be .doc, .txt, .pdf, .jpg, whatever) on the server; e.g. somewhere in my web application. Where is the proper and best place to store files? $TOMCAT\webapps\MyApplication\ Thanks for suggestions. ___ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
File upload but outside session
Hi, Our users need to upload a file as part of a form submission. First we used struts-upload FormFile as one of the fields of the ActionForm. It worked well until we tested it in a Tomcat cluster. Since the form is session-scoped, the FormFile has to be serialized for sessions to be replicated. However we get a NotSerializableException for org.apache.commons.fileupload.DeferredFileOutputStream So now I'm trying to keep the file upload outside the session. I tried using commons fileupload from my Action, but when I parse the HttpServletRequest I get no items! Any ideas? Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
How to prevent directory listing?
Is it possible to prevent a particular Struts webapp from displaying directory listings? That is, global /conf/web.xml has its DefaultServlet with listings set to true, thus enabling dir listing for all apps. Can I then prevent a particular Struts webapp from doing so by setting something in the local web.xml? Thank you. Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: How to prevent directory listing?
Thanks Jason, I already did, but it seems to override ActionServlet and none of my pages work. I also tried by changing the startup order to 3 (after ActionServlet), but still no luck! Ivan. -Original Message- From: Jason Lea [mailto:[EMAIL PROTECTED] Sent: Thursday, September 02, 2004 6:40 PM To: Struts Users Mailing List Subject: Re: How to prevent directory listing? I think (haven't tried this myself) you can override it in your own application's web.xml eg add this to your web.xml in the appropriate place servlet servlet-namedefault/servlet-name servlet-class org.apache.catalina.servlets.DefaultServlet /servlet-class init-param param-namedebug/param-name param-value0/param-value /init-param init-param param-namelistings/param-name param-valuefalse/param-value /init-param load-on-startup1/load-on-startup /servlet Ivan Vasquez wrote: Is it possible to prevent a particular Struts webapp from displaying directory listings? That is, global /conf/web.xml has its DefaultServlet with listings set to true, thus enabling dir listing for all apps. Can I then prevent a particular Struts webapp from doing so by setting something in the local web.xml? Thank you. Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Jason Lea - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Classloading problem
We have Tomcat 5.0.16 and were incorrectly placing common jars (such as JDBC drivers) in /common/lib. Now we just moved them to /shared/lib (for truly common stuff) and WEB-INF/lib, but now all applications complain giving a java.lang.ClassNotFoundException, just like if things weren't in Tomcat's classpath anymore. Apps and Tomcat restarts have been done several times. Is there anything in web.xml, server.xml, etc that needs to be set? What are we possibly missing? Tomcat docs are pretty straightforward about it and everything seems right. Once again, thanks in advance. Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Classloading problem
Sure, in common/lib it works well. But from Tomcat docs: http://jakarta.apache.org/tomcat/tomcat-5.0-doc/class-loader-howto.html The following rules cover about 95% of the decisions that application developers and deployers must make about where to place class and resource files to make them available to web applications: * For classes and resources specific to a particular web application, place unpacked classes and resources under /WEB-INF/classes of your web application archive, or place JAR files containing those classes and resources under /WEB-INF/lib of your web application archive. * For classes and resources that must be shared across all web applications, place unpacked classes and resources under $CATALINA_BASE/shared/classes, or place JAR files containing those classes and resources under $CATALINA_BASE/shared/lib. --Then goes on...--- Common - This class loader contains additional classes that are made visible to both Tomcat internal classes and to all web applications. Normally, application classes should NOT be placed here. All unpacked classes and resources in $CATALINA_HOME/common/classes, as well as classes and resources in JAR files under the $CATALINA_HOME/commons/endorsed and $CATALINA_HOME/common/lib directories, are made visible through this class loader. Shared - This class loader is the place to put classes and resources that you wish to share across ALL web applications (unless Tomcat internal classes also need access, in which case you should put them in the Common class loader instead). All unpacked classes and resources in $CATALINA_BASE/shared/classes, as well as classes and resources in JAR files under $CATALINA_BASE/shared/lib, are made visible through this class loader. In our case we want to share jars common to all applications, but none of them are required by Tomcat. Ivan. -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 12:52 PM To: Struts Users Mailing List Subject: Re: Classloading problem I have been using 5.0.27, putting my JDBC drivers in common/lib, and my struts jars in WEB-INF/lib of each application, and haven't had any problems. Why do you say incorrectly? Erik Ivan Vasquez wrote: We have Tomcat 5.0.16 and were incorrectly placing common jars (such as JDBC drivers) in /common/lib. Now we just moved them to /shared/lib (for truly common stuff) and WEB-INF/lib, but now all applications complain giving a java.lang.ClassNotFoundException, just like if things weren't in Tomcat's classpath anymore. Apps and Tomcat restarts have been done several times. Is there anything in web.xml, server.xml, etc that needs to be set? What are we possibly missing? Tomcat docs are pretty straightforward about it and everything seems right. Once again, thanks in advance. Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Classloading problem
Thanks for your answer, that explains it all. Yes, we were trying to clean server.xml and to avoid server restarts every time something changes (e.g. db connection pool info). Context was directly cut and pasted into the local META-INF/context.xml. But Tomcat gets it only when you create a .war and then deploy it. If you have a deployed application, create META-INF/context.xml and delete its context entry from server.xml, the context is lost. The only way to make the app work again is to place context.xml in conf/Catalina/localhost/ (that must be part of Tomcat's auto deployment feature). Hope that helps, let me know if that doesn't work for you. Thanks! Ivan. -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 3:10 PM To: Struts Users Mailing List Subject: Re: Classloading problem Also, since you appear to be trying to follow the documenation, have you ever gotten a Context XML file placed within the META-INF directory of your web app to work? I can't get this to work (I have gotten them to work when placed in the conf directory -- though I had to learn the hard way to take write permissions away from Tomcat after it very rudely deleted one). The documentation is confusing, and the example web app mysteriously does not include a Context XML file at all, despite that pretty much any serious web app is going to need one (unless you declare everything in server.xml). If you have an example of this working, please share it with me. Erik Ivan Vasquez wrote: Sure, in common/lib it works well. But from Tomcat docs: http://jakarta.apache.org/tomcat/tomcat-5.0-doc/class-loader-howto.html The following rules cover about 95% of the decisions that application developers and deployers must make about where to place class and resource files to make them available to web applications: * For classes and resources specific to a particular web application, place unpacked classes and resources under /WEB-INF/classes of your web application archive, or place JAR files containing those classes and resources under /WEB-INF/lib of your web application archive. * For classes and resources that must be shared across all web applications, place unpacked classes and resources under $CATALINA_BASE/shared/classes, or place JAR files containing those classes and resources under $CATALINA_BASE/shared/lib. --Then goes on...--- Common - This class loader contains additional classes that are made visible to both Tomcat internal classes and to all web applications. Normally, application classes should NOT be placed here. All unpacked classes and resources in $CATALINA_HOME/common/classes, as well as classes and resources in JAR files under the $CATALINA_HOME/commons/endorsed and $CATALINA_HOME/common/lib directories, are made visible through this class loader. Shared - This class loader is the place to put classes and resources that you wish to share across ALL web applications (unless Tomcat internal classes also need access, in which case you should put them in the Common class loader instead). All unpacked classes and resources in $CATALINA_BASE/shared/classes, as well as classes and resources in JAR files under $CATALINA_BASE/shared/lib, are made visible through this class loader. In our case we want to share jars common to all applications, but none of them are required by Tomcat. Ivan. -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 12:52 PM To: Struts Users Mailing List Subject: Re: Classloading problem I have been using 5.0.27, putting my JDBC drivers in common/lib, and my struts jars in WEB-INF/lib of each application, and haven't had any problems. Why do you say incorrectly? Erik Ivan Vasquez wrote: We have Tomcat 5.0.16 and were incorrectly placing common jars (such as JDBC drivers) in /common/lib. Now we just moved them to /shared/lib (for truly common stuff) and WEB-INF/lib, but now all applications complain giving a java.lang.ClassNotFoundException, just like if things weren't in Tomcat's classpath anymore. Apps and Tomcat restarts have been done several times. Is there anything in web.xml, server.xml, etc that needs to be set? What are we possibly missing? Tomcat docs are pretty straightforward about it and everything seems right. Once again, thanks in advance. Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED
RE: Classloading problem
it with me. Erik Ivan Vasquez wrote: Sure, in common/lib it works well. But from Tomcat docs: http://jakarta.apache.org/tomcat/tomcat-5.0-doc/class-loader-howto. html The following rules cover about 95% of the decisions that application developers and deployers must make about where to place class and resource files to make them available to web applications: * For classes and resources specific to a particular web application, place unpacked classes and resources under /WEB-INF/classes of your web application archive, or place JAR files containing those classes and resources under /WEB-INF/lib of your web application archive. * For classes and resources that must be shared across all web applications, place unpacked classes and resources under $CATALINA_BASE/shared/classes, or place JAR files containing those classes and resources under $CATALINA_BASE/shared/lib. --Then goes on...--- Common - This class loader contains additional classes that are made visible to both Tomcat internal classes and to all web applications. Normally, application classes should NOT be placed here. All unpacked classes and resources in $CATALINA_HOME/common/classes, as well as classes and resources in JAR files under the $CATALINA_HOME/commons/endorsed and $CATALINA_HOME/common/lib directories, are made visible through this class loader. Shared - This class loader is the place to put classes and resources that you wish to share across ALL web applications (unless Tomcat internal classes also need access, in which case you should put them in the Common class loader instead). All unpacked classes and resources in $CATALINA_BASE/shared/classes, as well as classes and resources in JAR files under $CATALINA_BASE/shared/lib, are made visible through this class loader. In our case we want to share jars common to all applications, but none of them are required by Tomcat. Ivan. -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 12:52 PM To: Struts Users Mailing List Subject: Re: Classloading problem I have been using 5.0.27, putting my JDBC drivers in common/lib, and my struts jars in WEB-INF/lib of each application, and haven't had any problems. Why do you say incorrectly? Erik Ivan Vasquez wrote: We have Tomcat 5.0.16 and were incorrectly placing common jars (such as JDBC drivers) in /common/lib. Now we just moved them to /shared/lib (for truly common stuff) and WEB-INF/lib, but now all applications complain giving a java.lang.ClassNotFoundException, just like if things weren't in Tomcat's classpath anymore. Apps and Tomcat restarts have been done several times. Is there anything in web.xml, server.xml, etc that needs to be set? What are we possibly missing? Tomcat docs are pretty straightforward about it and everything seems right. Once again, thanks in advance. Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Classloading problem
Yes. And I just deployed a war with my config to another server to double-check. -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 5:17 PM To: Struts Users Mailing List Subject: Re: Classloading problem [eweber]$ jar tf $TOMCAT_HOME/webapps/Foo.war . . . META-INF/context.xml META-INF/MANIFEST.MF . . . Right? Erik Ivan Vasquez wrote: Erik, here goes my context.xml, Tomcat renames it the same as the app's directory. I assume your Tomcat has autodeploy enabled. !--By Ivan: WAR-contained Application Context-- !--Path defines the directory name created when war is deployed-- Context path=/nahrgisdev docBase=nahrgisdev debug=5 reloadable=true crossContext=true !--Development-- Resource name=jdbc/orcl auth=Container type=javax.sql.DataSource/ ResourceParams name=jdbc/orcl parameter namefactory/name valueorg.apache.commons.dbcp.BasicDataSourceFactory/value /parameter parameter namedriverClassName/name valueoracle.jdbc.driver.OracleDriver/value /parameter !--By Ivan: Parameters for RAC connection load balancing-- parameter nameurl/name valuejdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE=on)(ADDRESS=(PROTOC O L=TCP)(HOST=node1)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=node2)(PORT= 1 521))(CONNECT_DATA=(SERVICE_NAME=orcl)))/value /parameter parameter nameusername/name value*/value /parameter parameter namepassword/name value*/value /parameter parameter namemaxActive/name value10/value /parameter parameter namemaxIdle/name value10/value /parameter parameter namemaxWait/name value-1/value /parameter parameter nameremoveAbandoned/name valuetrue/value /parameter parameter nameremoveAbandonedTimeout/name value60/value /parameter parameter namelogAbandoned/name valuetrue/value /parameter /ResourceParams /Context -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 4:30 PM To: Struts Users Mailing List Subject: Re: Classloading problem I have tried this repeatedly. I am using the same Foo.xml file that does work when placed in conf/Catalina/localhost/. I have tried with and without the path and docBase attributes to the Context element. I have renamed the file to context.xml and it is in META-INF in my war file. I have also tried putting Foo.xml or context.xml within a META-INF/context.xml/ *directory* as the documentation suggests. DBCP throws an Exception on startup that it cannot create a JDBC driver of class '' for connect URL 'null'. I am supposing that the context file is never loaded. Also Tomcat creates a Foo.xml directory inside of conf/Catalina/localhost with nothing in it. If I try restarting the server, I also get a FileNotFoundException on Foo.xml, saying it is a directory (good grief). I have tried hot deploy and deploying via the manager web app as well. I basically observed the same behavior that Ivan described. I would love to see that example if you can find it. Erik Kris Schneider wrote: Hang on, my bad - it should be /META-INF/context.xml. So, rename Foo.xml to be context.xml and place it in *META-INF*. Quoting Erik Weber [EMAIL PROTECTED]: Kris, this is from context.html in the Tomcat 5 docs:* Please note that for tomcat 5.x, unlike tomcat 4.x, it is NOT recommended to place Context elements directly in the server.xml file.* Instead, put them in the META-INF/context.xml directory of your WAR file or the conf directory as described above. So here I am, stupidly trying to put my Foo.xml file within /META-INF/context.xml/ (and various variations of that) of my web app. So should I rename Foo.xml to context.xml (I ask because in the conf directory I have been naming it Foo.xml, not context.xml), and put it in *WEB-INF*? Could you show me where you found how to do this in the docs? Am I just completely misreading the above sentence? Thanks for your help, Erik Kris Schneider wrote: Can you provide some more detail on the problems you're running into with using WEB-INF? I've got a simple one lying around here somewhere... WEB-INF/context.xml: Context path=/init Loader delegate=false/ Manager pathname=/ /Context Seems to work fine with TC 5... Quoting Erik Weber [EMAIL PROTECTED]: Also, since you appear to be trying to follow the documenation, have you ever gotten a Context XML file placed within the META-INF directory of your web app to work? I can't get
RE: Classloading problem
Also, the name under which it gets to conf/Catalina/localhost is app_name_folder.xml Inside, path and docBase are untouched. No war extensions anywhere. BTW, these are tomcat 5.0.16, just in case. -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 5:17 PM To: Struts Users Mailing List Subject: Re: Classloading problem [eweber]$ jar tf $TOMCAT_HOME/webapps/Foo.war . . . META-INF/context.xml META-INF/MANIFEST.MF . . . Right? Erik Ivan Vasquez wrote: Erik, here goes my context.xml, Tomcat renames it the same as the app's directory. I assume your Tomcat has autodeploy enabled. !--By Ivan: WAR-contained Application Context-- !--Path defines the directory name created when war is deployed-- Context path=/nahrgisdev docBase=nahrgisdev debug=5 reloadable=true crossContext=true !--Development-- Resource name=jdbc/orcl auth=Container type=javax.sql.DataSource/ ResourceParams name=jdbc/orcl parameter namefactory/name valueorg.apache.commons.dbcp.BasicDataSourceFactory/value /parameter parameter namedriverClassName/name valueoracle.jdbc.driver.OracleDriver/value /parameter !--By Ivan: Parameters for RAC connection load balancing-- parameter nameurl/name valuejdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE=on)(ADDRESS=(PROTOC O L=TCP)(HOST=node1)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=node2)(PORT= 1 521))(CONNECT_DATA=(SERVICE_NAME=orcl)))/value /parameter parameter nameusername/name value*/value /parameter parameter namepassword/name value*/value /parameter parameter namemaxActive/name value10/value /parameter parameter namemaxIdle/name value10/value /parameter parameter namemaxWait/name value-1/value /parameter parameter nameremoveAbandoned/name valuetrue/value /parameter parameter nameremoveAbandonedTimeout/name value60/value /parameter parameter namelogAbandoned/name valuetrue/value /parameter /ResourceParams /Context -Original Message- From: Erik Weber [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 4:30 PM To: Struts Users Mailing List Subject: Re: Classloading problem I have tried this repeatedly. I am using the same Foo.xml file that does work when placed in conf/Catalina/localhost/. I have tried with and without the path and docBase attributes to the Context element. I have renamed the file to context.xml and it is in META-INF in my war file. I have also tried putting Foo.xml or context.xml within a META-INF/context.xml/ *directory* as the documentation suggests. DBCP throws an Exception on startup that it cannot create a JDBC driver of class '' for connect URL 'null'. I am supposing that the context file is never loaded. Also Tomcat creates a Foo.xml directory inside of conf/Catalina/localhost with nothing in it. If I try restarting the server, I also get a FileNotFoundException on Foo.xml, saying it is a directory (good grief). I have tried hot deploy and deploying via the manager web app as well. I basically observed the same behavior that Ivan described. I would love to see that example if you can find it. Erik Kris Schneider wrote: Hang on, my bad - it should be /META-INF/context.xml. So, rename Foo.xml to be context.xml and place it in *META-INF*. Quoting Erik Weber [EMAIL PROTECTED]: Kris, this is from context.html in the Tomcat 5 docs:* Please note that for tomcat 5.x, unlike tomcat 4.x, it is NOT recommended to place Context elements directly in the server.xml file.* Instead, put them in the META-INF/context.xml directory of your WAR file or the conf directory as described above. So here I am, stupidly trying to put my Foo.xml file within /META-INF/context.xml/ (and various variations of that) of my web app. So should I rename Foo.xml to context.xml (I ask because in the conf directory I have been naming it Foo.xml, not context.xml), and put it in *WEB-INF*? Could you show me where you found how to do this in the docs? Am I just completely misreading the above sentence? Thanks for your help, Erik Kris Schneider wrote: Can you provide some more detail on the problems you're running into with using WEB-INF? I've got a simple one lying around here somewhere... WEB-INF/context.xml: Context path=/init Loader delegate=false/ Manager pathname=/ /Context Seems to work fine with TC 5... Quoting Erik Weber [EMAIL PROTECTED]: Also, since you appear to be trying to follow the documenation, have you ever
RE: [OT] Clustering
I assume you ask about an Oracle RAC database. In that case, the mode is kind-of ACTIVE/ACTIVE: What you get is a single database mounted by as many instances as cluster nodes you have configured. So every time your application establishes a db connection, it may be served by either cluster node. The data files can be in a clustered file system (like OCFS), in raw partitions or even in NFS mounts. There are a few guidelines to develop apps meant to run in a clustered database: http://www.cise.ufl.edu/help/database/oracle-docs/rac.920/a96598/design. htm Ivan. -Original Message- From: Viral_Thakkar [mailto:[EMAIL PROTECTED] Sent: Friday, August 27, 2004 7:35 AM To: Struts Users Mailing List Subject: [OT] Clustering Hi All, I am developing a J2EE application using Oracle 9iAS. I am looking for clustering information. I am looking for info on database side. * Are Database servers clustered in an ACTIVE/ACTIVE or ACTIVE/PASIVE mode? * Is the Oracle database supposed to reside on a file system or on a RAW partition? TIA. Regards, Viral - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Uploading files to a database
Hi, What's the preferred way to upload files into a database in a J2EE Web application? Is there any way to stream the file straight from the HttpServletRequest to the database without staging it in the server's filesystem? Thank you, Ivan. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Not Logged in with the same loggin-password if it is already registered.
It may not be as easy as the current session (for the new login) and the session that
you want to invalidate are different objects.
The main issue would be how to get a reference to all active sessions via some session
id. Apache Axis, for example, keeps track of them with a list of ActiveSessions.
Ivan Vasquez
(Compatriota :-)
-Original Message-
From: Geeta Ramani [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 28, 2004 4:05 PM
To: Struts Users Mailing List
Subject: RE: Not Logged in with the same loggin-password if it is already registered.
Ricardo:
Not sure where you are having problems..? Why wouldn't something like this
(pseudocode) work?
if (isLoggedIn(user)) {
session.invalidate();
}
//now proceed normally with login with un/pw...
Regards,
Geeta
-Original Message-
From: Ricardo Andres Quintero [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 28, 2004 3:04 PM
To: [EMAIL PROTECTED]
Subject: Not Logged in with the same loggin-password if it is already
registered.
Hello Guys
I need not to let users to login in my app simultaneosly.
I mean if a login-password is actually logged in, i need to
invalidatye that session and then let the new login-password
to work in, after invalidating the old session.
Any ideas? and of course any examples?
--
Ricardo Andrés Quintero R.
Ubiquando Ltda.
-
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RE: How to read display-name from web.xml?
Thanks Craig Jason, Yes, the string in display-name can be queried via this.getServlet().getServletContext().getServletContextName() from any Struts Action. Thanks very much. Ivan. -Original Message- From: Craig McClanahan [mailto:[EMAIL PROTECTED] Sent: Monday, July 12, 2004 5:09 PM To: Struts Users Mailing List Subject: Re: How to read display-name from web.xml? Ivan Vasquez wrote: Hi, How can I read from web.xml, say, the application's display name? I've tried several things, but no luck. This isn't really Struts-specific, but I'm sure this is an easy one for many of you. Thanks, Ivan. The web.xml file is available as a resource that can be accessed via the ServletContext for your webapp. For example, you can say something like: ServletContext context = ...; // Get a reference to our servlet context InputStream stream = context.getResourceAsStream(/WEB-INF/web.xml); Now you've got an input stream to read the contents ... you'll probably want to use an XML parser to parse the contents -- google for JAXP to see the API that Java provides for this purpose. Or, you might consider using the Commons Digester package (included with Struts), which is what Struts itself uses to parse this very resource, in order to figure out how the controller servlet is mapped. Looking at the source code for ActionServlet should give you some useful clues. Craig - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Strange double-submissions
Hi, We have a form whose last two controls are an html:select and a submit button. The form posts to an Action to insert records into a database. Changing the select control causes a page refresh (posting to the same Action) in order to display other options. We notice that, if the user submits the form immediately after changing the select control (say, in less than 1sec), two records (instead of one) are inserted into the database. The problem appears depending on how fast the user hits the submit button after the form refreshes, if you submit 5secs after refresh, there's no problem. The code has been checked and there is no possibility for an html:select onchange to cause a database insert. Even though both trigger the same Action, they are well differentiated. To make things more confusing, even though it is a server-side problem, we can reproduce it only using IE6.0! Besides the js for submitting the form onchange, there's no client-side code. Any clues? Thanks in advance. Ivan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Strange double-submissions
Thanks Jim, Yes, we found it to be an oddity in IE6 but mostly an error on our part. The html:submit onchange method was actually submitting the form (as any other control does). Doing this is wrong to begin with, and it turns out that Mozilla and IE handle it differently. Now the page contains a default value of submit in the hidden field that onchange updates. That way submit does not have to call any js, and the action is still able to determine what to do. Thanks again. Ivan -Original Message- From: Jim Barrows [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 07, 2004 3:02 PM To: Struts Users Mailing List Subject: RE: Strange double-submissions -Original Message- From: Ivan Vasquez [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 07, 2004 11:31 AM To: [EMAIL PROTECTED] Subject: Strange double-submissions Hi, We have a form whose last two controls are an html:select and a submit button. The form posts to an Action to insert records into a database. Changing the select control causes a page refresh (posting to the same Action) in order to display other options. We notice that, if the user submits the form immediately after changing the select control (say, in less than 1sec), two records (instead of one) are inserted into the database. The problem appears depending on how fast the user hits the submit button after the form refreshes, if you submit 5secs after refresh, there's no problem. The code has been checked and there is no possibility for an html:select onchange to cause a database insert. Even though both trigger the same Action, they are well differentiated. To make things more confusing, even though it is a server-side problem, we can reproduce it only using IE6.0! Besides the js for submitting the form onchange, there's no client-side code. Any clues? Just the big one you provided, IE 6. I would put some debugging code of some sort in your JS and see if IE6 is calling it even when it's not supposed to. I've also experienced some other oddities with IE 6 that don't happen elsewhere. Thanks in advance. Ivan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
