Safe URL for a dynamic resource
Hi, I'm trying to display a PDF file inside an IFRAME. To do that, I need a url to place on the IFRAME's src attribute. My idea is to create a shared resource and mount a url to it so I can reference it easily. Since the PDF file is generated on-the-fly, I can also pass a parameter through this url to determine the file's contents. However, I'm concerned about how safe it would be to do this. To add the shared resource I have to produce a single WebResource object. This would be fine if the call to getResourceStream would also pass along the parameters that have been set, but the parameters are retrieved though a call to getParameters. That means that the setParameters method must be called by Wicket sometime before the call to getResourceStream is made. My question is: How can I be sure that multiple simultaneous requests won't have concurrency problems in this scenario? Could there be a better way to do this? Thanks in advance, Denis Souza
Re: Safe URL for a dynamic resource
you can read the parameters off the url yourself, requestcycle.getrequest()... -igor On Tue, Sep 14, 2010 at 10:08 AM, Denis Souza denis.so...@gmail.com wrote: Hi, I'm trying to display a PDF file inside an IFRAME. To do that, I need a url to place on the IFRAME's src attribute. My idea is to create a shared resource and mount a url to it so I can reference it easily. Since the PDF file is generated on-the-fly, I can also pass a parameter through this url to determine the file's contents. However, I'm concerned about how safe it would be to do this. To add the shared resource I have to produce a single WebResource object. This would be fine if the call to getResourceStream would also pass along the parameters that have been set, but the parameters are retrieved though a call to getParameters. That means that the setParameters method must be called by Wicket sometime before the call to getResourceStream is made. My question is: How can I be sure that multiple simultaneous requests won't have concurrency problems in this scenario? Could there be a better way to do this? Thanks in advance, Denis Souza - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
RE: Safe URL for a dynamic resource
Thanks, that worked! I had though of something like that but the WebResource does not give you access to a request cycle. I had forgotten that I can just call RequestCycle.get(). Also I noticed the strangest thing while implementing it. Let's say I have the following query string: ?order=1234autoPrint=false Whenever I get the PageParameters from the request cycle and try to retrieve a parameter (say, order) it gives me the memory reference for the string instead of the string itself. For example it gives me [Ljava.lang.String;@1b4d41e instead of 1234. The same thing happens if I call requestCycle.getRequest().getParameterMap().get(order) But if I call requestCycle.getRequest().getParameter(order) it works fine. It's not really a big problem because I can just call the method that works, but, out of curiosity, any idea why this happens? Denis Souza -Original Message- From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com] Sent: terça-feira, 14 de setembro de 2010 14:22 To: users@wicket.apache.org Subject: Re: Safe URL for a dynamic resource you can read the parameters off the url yourself, requestcycle.getrequest()... -igor On Tue, Sep 14, 2010 at 10:08 AM, Denis Souza denis.so...@gmail.com wrote: Hi, I'm trying to display a PDF file inside an IFRAME. To do that, I need a url to place on the IFRAME's src attribute. My idea is to create a shared resource and mount a url to it so I can reference it easily. Since the PDF file is generated on-the-fly, I can also pass a parameter through this url to determine the file's contents. However, I'm concerned about how safe it would be to do this. To add the shared resource I have to produce a single WebResource object. This would be fine if the call to getResourceStream would also pass along the parameters that have been set, but the parameters are retrieved though a call to getParameters. That means that the setParameters method must be called by Wicket sometime before the call to getResourceStream is made. My question is: How can I be sure that multiple simultaneous requests won't have concurrency problems in this scenario? Could there be a better way to do this? Thanks in advance, Denis Souza - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
RE: Safe URL for a dynamic resource
Thanks, that worked! I had though of something like that but the WebResource does not give you access to a request cycle. I had forgotten that I can just call RequestCycle.get(). Also I noticed the strangest thing while implementing it. Let's say I have the following query string: ?order=1234autoPrint=false Whenever I get the PageParameters from the request cycle and try to retrieve a parameter (say, order) it gives me the memory reference for the string instead of the string itself. For example it gives me [Ljava.lang.String;@1b4d41e instead of 1234. The same thing happens if I call requestCycle.getRequest().getParameterMap().get(order) But if I call requestCycle.getRequest().getParameter(order) it works fine. It's not really a big problem because I can just call the method that works, but, out of curiosity, any idea why this happens? Denis Souza -Original Message- From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com] Sent: terça-feira, 14 de setembro de 2010 14:22 To: users@wicket.apache.org Subject: Re: Safe URL for a dynamic resource you can read the parameters off the url yourself, requestcycle.getrequest()... -igor On Tue, Sep 14, 2010 at 10:08 AM, Denis Souza denis.so...@gmail.com wrote: Hi, I'm trying to display a PDF file inside an IFRAME. To do that, I need a url to place on the IFRAME's src attribute. My idea is to create a shared resource and mount a url to it so I can reference it easily. Since the PDF file is generated on-the-fly, I can also pass a parameter through this url to determine the file's contents. However, I'm concerned about how safe it would be to do this. To add the shared resource I have to produce a single WebResource object. This would be fine if the call to getResourceStream would also pass along the parameters that have been set, but the parameters are retrieved though a call to getParameters. That means that the setParameters method must be called by Wicket sometime before the call to getResourceStream is made. My question is: How can I be sure that multiple simultaneous requests won't have concurrency problems in this scenario? Could there be a better way to do this? Thanks in advance, Denis Souza - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Safe URL for a dynamic resource
use getstring() -igor On Tue, Sep 14, 2010 at 11:17 AM, Denis Souza denis.so...@gmail.com wrote: Thanks, that worked! I had though of something like that but the WebResource does not give you access to a request cycle. I had forgotten that I can just call RequestCycle.get(). Also I noticed the strangest thing while implementing it. Let's say I have the following query string: ?order=1234autoPrint=false Whenever I get the PageParameters from the request cycle and try to retrieve a parameter (say, order) it gives me the memory reference for the string instead of the string itself. For example it gives me [Ljava.lang.String;@1b4d41e instead of 1234. The same thing happens if I call requestCycle.getRequest().getParameterMap().get(order) But if I call requestCycle.getRequest().getParameter(order) it works fine. It's not really a big problem because I can just call the method that works, but, out of curiosity, any idea why this happens? Denis Souza -Original Message- From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com] Sent: terça-feira, 14 de setembro de 2010 14:22 To: users@wicket.apache.org Subject: Re: Safe URL for a dynamic resource you can read the parameters off the url yourself, requestcycle.getrequest()... -igor On Tue, Sep 14, 2010 at 10:08 AM, Denis Souza denis.so...@gmail.com wrote: Hi, I'm trying to display a PDF file inside an IFRAME. To do that, I need a url to place on the IFRAME's src attribute. My idea is to create a shared resource and mount a url to it so I can reference it easily. Since the PDF file is generated on-the-fly, I can also pass a parameter through this url to determine the file's contents. However, I'm concerned about how safe it would be to do this. To add the shared resource I have to produce a single WebResource object. This would be fine if the call to getResourceStream would also pass along the parameters that have been set, but the parameters are retrieved though a call to getParameters. That means that the setParameters method must be called by Wicket sometime before the call to getResourceStream is made. My question is: How can I be sure that multiple simultaneous requests won't have concurrency problems in this scenario? Could there be a better way to do this? Thanks in advance, Denis Souza - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
