How RequestDespatcher.include() method gets higher priority  ?

Hi,
I have three jsp pages named as A.jsp ,B.jsp and C.jsp respectively. In A.jsp , i include B.jsp using include directive and i include C.jsp using RequestDispatcher.include().
But in output of A.jsp , The output of C.jsp comes as first and then output of B.jsp comes as second , eventhough i included B.jsp before C.jsp.
I don't know why RequestDispatcher.include() gets higher priority than include directive of JSP.
Just clear me.
thanks in advance,
nvseenu

It has to do with when each cache is flushed.
Each of these JSP pages will build up its output text into a buffer. When that buffer is full, or you flush it manually, the text gets written to the underlying output stream.
The jsp:include uses the same buffer as its parent page. The output writer of the current page gets passed to it so that it can just append to the end.
When you short-circuit things by using the RequestDispatcher manually, you only pass along the request/response. The page invoked then obtains the output stream, and wraps its own buffer around it.
When a page is complete, it flushes its buffer to the output stream.
So the order is:
Page B completes and flushes its buffer. That result gets sent to A's buffer.
Page C completes and flushes its buffer. That result gets sent straight to the underlying response output stream.
Then page A finishes, flushes its buffer. All of its buffer (including what it got from B) now gets written to the outputstream.
Solutions:
You can manually flush the writer before you invoke the RequestDispatcher: ie out.flush(). If you try to forward/redirect after this though, it will raise an error.
If you really want to get complicated, create a ResponseWrapper, and when you invoke the RequestDispatcher, pass it a response object with an outputstream/writer that gets added to the current buffer (ie what it does with a jsp:include)
Or you can just use jsp:include.
here is some code to play with.
Try changing the flush attribute on the jsp:include to "true" and see what happens.
Uncomment the out.flush() command to get it to print in the "correct" order.
// includeOrder.jsp
<html>
<body>
Ok, this is the main page of this little test.
At this point we are going to <jsp:include> the second page:<br>
<jsp:include page="includeOrder2.jsp" flush="false"/>
<hr>
And now we use requestDispatcher.include() to include the third page<br>
<%-- out.flush();  --%>
<% request.getRequestDispatcher("includeOrder3.jsp").include(request, response); %>
<hr>
And now we are done.
</body>
</html>
// includeOrder2.jsp
Here we are on page 2!
// includeOrder3.jsp
Beware of page 3!Cheers,
evnafets

Similar Messages

  • How to: Give 1 SSID higher priority than other SSIDs

    I sometime have up to 90 people connected to an AP.I have 3 SSIDs on my APs. 1 of them is the Corporate one and I need people who on that SSID have special treatment and make their network run faster , in the event of congestion. I dont really care about the service quality of the other SSIDs. 
    Note: The congestion is only at the AP since 90 people is a little too much for an AP. Once they get through Wireless to Wire, I dont have problem with Wire connection so no End-to-End QOS I prefer.
    How do I archive this ?
    I am on WLC v8.0

    I undestand. But think about it for a moment. 80 non QoS devices all contending for the network at various parts in time and 10 QoS devices doing the same.
    Even when a QoS device wants to trigger a frame he needs to listen to the medium. He may hear some mix of 80 other devices using the medium. The QoS device does his backoff and starts to count down. While counting down he is listening to the medium and hearing other (part of the 80 clients) transmitting frames. The QoS device then needs to pause, wait and then resume countdown when these frames are heard. When he hits 0 with his NAV, with 80 other clients on that cell the odds of him being the only one transmitting at that point of time isn't as good if there were only 20 clients on cell. 
    So my point being while you QoS you may not see the performance you want with that many people on cell. 

  • How to include print date with time on SkillBuilders Schedule Plug In?

    Hi,
    Do you have an idea how to include and get the print date with time on the SkillBuilders Plug In? It shows me the date only, time not included. Have tried to put "HH24:MI", "HH24MI" or Tochar(HH24:MI)? No result??
    select p.fullname, sbip_schedule.start_date(e.event_schedule) start_date
    , sbip_schedule.end_date(e.event_schedule) end_date
    , sbip_schedule.duration_seconds(e.event_schedule) duration_seconds
    , sbip_schedule.calendar_summary(e.event_schedule) calendar_summary
    from app_events e
    Thanks!

    I forget to clarify I am looking for the answer is how to get the print of date with time, Start date with time and End Date with time.

  • How to include columns with a space in name in clientcontext load method in JSOM

    Hi Gurus,
    I have a situation where I need to read a list that has a column 'Repositary Name'.
    While I am reading the list in my JSOM I need to load this column in the clientcontext.load method.
    My code likes this below.
    this.collListItem = list.getItems(camlQuery);
        ctx.load(collListItem, 'Include(Title, 'Repositary Name')')
    The Issue is I can not load this 'Repositary Name' column. I tried with its internal name, removing the space, putting the name in single quote but nothing works.
    Please advice how to include a column in clientcontext.load method that has a space in its name .
    Changing the column is not a option and I have to have call it before I use it my Async Methods.

    Hi,
    If I am getting your issue correctly, I think you should put _x0020_ in place of space in your column name. In your case try Repositary_x0020_Name.
    ***If my post is answer for your query please mark as answer***
    ***If my answer is helpful please vote***

  • How and when the realDelete method gets called for a custom adapter?

    Hi,
    I am a newbie in sun identity manager and is in the process of writing a custom adapter for documentum resource.
    While I am successful in creating the resource,then provisioning the resource to an user(i.e creating an account of the user on documentum ) updating the user through idm I am not being able to deprovision the resource.
    Actually in the trace I am not seeing the realDelete method getting called anywhere,but I am sure if it gets called it would do its designated job bcos as a standalone code it's working.
    Does this mean I am not properly doing deprovisioning in sun-idm?
    What method I am employing is in the assignment list of the user,i am putting the resource from assigned to unassigned side(i.e right to left side) just as in case of provisioning I have put it from left to right.
    Is it the standard way of deprovisioning or am I missing something here?
    Any sort of help would be highly appreciated.
    Thanks
    anjan

    You need to read that manual with more caution. It has all info you need.
    1. Table modification info stays in shared pool and flushed into dictionary by Oracle automatically. You can explicity do it by calling dbms_stats.flush_database_monitoring_info.
    2. dba_tab_modifications view = How many DML are applied to target table?
    dba_tab_statistics.stale_stats = Is statistics stale?
    3. When you call dbms_stats.gather... familiy, Oracle flushed the stale info to disk. You gnerally don't need to care about that.
    4. Statistics is considered to be stale, when the change is over 10% of current rows.
    (As of 11g, this value can be customized per objects. Cool feature)
    create table t_stat(id int);
    insert into t_stat select rownum from all_objects where rownum <= 100;
    commit;
    exec dbms_stats.gather_table_stats(user, 'T_STAT');
    select * from sys.dba_tab_modifications where table_name = 'T_STAT';
    No row selected
    select stale_stats from sys.dba_tab_statistics where table_name = 'T_STAT';
    NO
    insert into t_stat select rownum from all_objects where rownum <= 20;
    select * from sys.dba_tab_modifications where table_name = 'T_STAT';
    No rows selected <-- Oops
    select stale_stats from sys.dba_tab_statistics where table_name = 'T_STAT';
    NO  <-- Oops
    exec dbms_stats.flush_database_monitoring_info;
    select * from sys.dba_tab_modifications where table_name = 'T_STAT';
    TABLE_OWNER     TABLE_NAME     PARTITION_NAME     SUBPARTITION_NAME     INSERTS     UPDATES     DELETES     TIMESTAMP     TRUNCATED     DROP_SEGMENTS
    UKJA     T_STAT               20     0     0     2008-01-18 PM 11:30:19     NO     0
    select stale_stats from sys.dba_tab_statistics where table_name = 'T_STAT';
    YES

  • How to assign higher priority for labview while running other applications.

    HI,
    I am performing 2 time critical counter operations. I am using software time due to the hardware limitation of PCI6013(I have tried all other options). My problem is that I get a erractic value when I use mouse, keyboard or change to other application.
    I found the following link providing a method to provide maximum priority to labview application.But even regular labview users are asked not to use this application. I am not even a regular LABview user.Is there any precaution that I should take to use this VI. I am in need of such an application very badly. Please Help.
    http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000F5880000&UCATEGORY_0=_1
    5_&UCATEGORY_S=0&USEARCHCONTEXT_TIER_0=0&USEARCHCONTEXT_TIER_S=0&USEARCHCONTEXT_QUESTION_0=priority&USEARCHCONTEXT_QUESTION_S=0

    "Is there any precaution that I should take to use this VI."
    Yes many,
    When you start to experiment with settings priorities in an attempt to avoid the affects of mouse clicks, then you should brace yourself for the application appearing hung. This would happen if LV had a higher priority than the mouse interupt service routine.
    Same applies to the other conditions you mentioned.
    If you go this route, backup before you experiment! Some strange things can happen to your file system.
    I have talked to you about this challenge of yours in another thread. This is what I recomend.
    1) If you can live with your readings being made on only one gear at a time, AND the sample rate being aperiodic, then you MAY be able to use DAQ Occurances and two session. I
    have not done this myself, and AM NOT SURE if it can be done or if you hardare supports it, but maybe;
    a) Open two references to your and configure A so it uses hardware timing (like you already said works good) to count gear A using the other counter as the gate. On the other session you are counting gear B.
    b) Configure both of the above to fire occurances when done.
    c)Start only session A.
    d) When A occurance fires start B.
    e) When B fires start A, etc.
    This will give you determinism on the counts and effectively shift the indeterminism to the update interval.
    If this is not good enough then there is another option. Can you get yourself a nice solid external reference that you can apply as an external gate to both counters? If so you will be using hardware timing and you should be on the right track.
    If these do not work out, you may end up having to go to different hardware.
    Just trying to help,
    Ben
    Ben Rayner
    I am currently active on.. MainStream Preppers
    Rayner's Ridge is under construction

  • How can I get High Lighted text from JTextPane?

    I can get Selected text when right click.
    But, I have to get high lighted text without Right click.
    How can I do this?
    Is it possible any way?

    Hi,
    you could try it with Document doc = editor.getDocument();
    int start = editor.getSelectionStart();
    String selectedText = doc.getText(start, editor.getSelectionEnd() - start);(editor above being your JTextPane).
    Ulrich

  • How do I get high res aperture images on new iPad?

    I want high quality images synced from aperture. I bought the new ipad specificaly to do artwork and image maniuplations. I was loving the ipad 2 but working with such low res images won't work for reporduction. I thought with the new ipad when I synced to aperture that I would get higher res files. They look like the same small images to me.

    Art,
    I'm still working out the details myself, but I may have some helpful information.
    If you are syncing through iTunes, then I believe the resolution is dictated by the preview preferences in Aperture. I can't remember what the default setting was, but I changed it to the maximum allowable for the iPad1 some time ago. The new iPad can handle more resolution, so you can change the setting in preferences to a higher level. Here is where it gets tricky, I don't think Aperture automatically updates the preview to the new settings. In fact, I it tells you it is up to date. I got past this by forcing the generate new preview feature (select the photo, hold down the option key, right click, and select generate preview). I suggest doing this with one photo to see how it works for you. Ff you do 1600 like I did, it takes some time. Although, I'm still hoping for better, I can see the difference immediately over my iPad1 settings. I am able to zoom in on the ipad, which much less obvious degradation of the image.
    I did get some variation in the preview size, even though the full image sizes are close. My file size ranged from 800K to 2.8M for some sample images transferred to the ipad. This happened at the "no limit"setting in preferences.
    As I said, I'm still playing with it. I bought the 64GB model so I could store and present very high resolution photos on the iPad.
    Bob

  • How to include payment method in F-28 TX (I need in F-28 Obligatory)

    How to include payment method in F-28 TX (I need in F-28 Obligatory)

    Hi
    If you want to make assignment and document header text has required. Then go to SPRO-Financial Accounting - Document types - Define document types for entry view
    Here you select the Document type for incoming payments (ie)  DZ.
    In DZ Document type configuration there is section called required during document entry, there you will find check boxes referance document and Document header. Tick them, then it will become a required entry.
    Note:- When you do the entry These fields will not show with the indicator of Mandatory item but u cannot post the transaction without filling these fields.
    Cheers
    V.Krishnan
    (Assign Points if useful)

  • Newest iCal for U.S Holidays INCLUDES non-US holidays, how can I simply get JUST U.S ?

    The newest US Holidays app ( I didn't do it.....must have been with the latest OS upgrade ) includes Non- US holidays....which I prefer NOT to have. How do I delete those I don't want...or how do I simply get the app for JUST the U.S
    Thanks
    Shelgor

        I know that activating your phone is important, JL99. I'm sorry to advise that SIM cards are not able to be activated when outside of our coverage area. Initial activation would need to be preformed within the United States. I apologize for the inconvenience caused in this.
    TanishaS1_VZW
    Follow us on Twitter @VZWSupport

  • How can I give the "user interface thread" higher priority?

    We do alot of activex calls to front panels. We need to increase/decrease the priority of the user interface thread to resolve our thread problem. Anyone know how to do this?
    Chuck

    Hello,
    As P.M. was saying, you can adjust the thread priorities
    through the VI Properties dialogue. 
    Another place to modify the multithreading system in LabVIEW is a VI
    located at: [LabVIEW Directory]\vi.lib\Utility\sysinfo.llb\threadconfig.vi.  However I do not think this will remedy any
    problems you are having.
    From a Multithreading in LabVIEW tutorial (http://zone.ni.com/devzone/conceptd.nsf/webmain/d2e196c7416f373a862568690074c759)
    Priorities in the User Interface and
    Single-Threaded Applications
    Within the User Interface execution
    system, priority levels are handled in the same way for single-threaded and
    multithreaded applications.
    In single-threaded applications and
    in the User Interface execution system of multithreaded applications, the
    execution system queue has multiple entry points. The execution system places
    higher priority VIs on the queue in front of lower priority VIs.
    If a high-priority task is running and the queue contains only lower priority
    tasks, the high-priority VI continues to run. For example, if the execution
    queue contains two VIs of each priority level, the time-critical VIs share execution time exclusively until both finish.
    Then, the high priority VIs share execution
    time exclusively until both finish, and so on. However, if the higher priority
    VIs call a function that waits, the execution system removes higher priority
    VIs from the queue until the wait or I/O completes, assigning other tasks
    (possibly with lower priority) to run. When the wait or I/O completes, the
    execution system reinserts the pending task on the queue in front of lower
    priority tasks. Refer to the Synchronous/Blocking Nodes section for a list of
    asynchronous functions that wait.
    Also, if a high priority VI calls a lower priority subVI,
    that subVI is raised to the same priority level as the caller for the duration
    of that call. Consequently, you do not need to modify the priority levels of
    the subVIs that a VI calls to raise the priority level of the subVI.
    Thus changing the priority of your VI will change the
    priority of UI calls for that particular VI. 
    Again, I caution you because I suspect that if you are having problems
    with your application not running correctly, I do not believe that manipulating
    the thread priorities will resolve these issues.
    Hope this helps,
    Travis M
    LabVIEW R&D
    National Instruments

  • How many bytes i get when i run some method through soap

    Hi everyone,
    I have a small problem. I have some web service. From wsdl file i create java classes (wsimport was used) and add them to my program. All works very good but i don't understand how to get information about how many bytes i get when i run some method.
    For example i have a method:
    service.getNewData(); How to check how many data i get BEFORE this method will complete.
    I know that i can check Content-Length but how i can do it?
    Thanks.

    * Download a new copy of the Firefox program: http://www.mozilla.com/firefox/all.html
    * Trash the current Firefox application to do a clean (re-)install.
    * Install the new version that you have downloaded.
    Your profile data is stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder], so you won't lose your bookmarks and other personal data.

  • How to get higher and second higher value in one row?

    Hello world,
    I want to get higher and second higher sal from emp in one row ,,
    Thanks

      1  select e.empno, e.ename,  e.sal,  lag(sal) over (order by sal) next_sal    from emp e
      2* order by sal
    SQL> /
         EMPNO ENAME             SAL   NEXT_SAL
          7369 SMITH             800
          7900 JAMES             950        800
          7876 ADAMS            1100        950
          7521 WARD             1250       1100
          7654 MARTIN           1250       1250
          7934 MILLER           1300       1250
          7844 TURNER           1500       1300
          7499 ALLEN            1600       1500
          7782 CLARK            2450       1600
          7698 BLAKE            2850       2450
          7566 JONES            2975       2850
         EMPNO ENAME             SAL   NEXT_SAL
          7788 SCOTT            3000       2975
          7902 FORD             3000       3000
          7839 KING             5000       3000

  • How to turn off high priority mark for emails

    I would like to turn off high priority mark for emails. Plaese advise!

    If you are talking about flagging and unflagging email messages in the mail app .... Find the email - open it - tap on Mark - select unflag.

  • (How) Can I change vi execution priority at runtime

    Hi all,
    I am using Daemons (free running VI's) and I communicate to them through Queues.
    They are part of my device driver architecture and use a producer architecture (For Acquisition) or a consumer Architecture (For Control)
    I have a single Daemon VI to which I deploy a "Device Object" using a Polymorphic class implimentation.
    This implimentation has one subtle shortfall,
    I am not able to change the execution priority at launch
    There is a property node that taunts that it is possible but the help (And run time Error message) says it not available at runtime.
    Does anyone know of an alternative method?
    Here are what I have thought of to-date:
    1. Have 5 different daemons each with a different priority [Distasteful for Code maintainance]
    2. Make Priority Low, and ensure that at least 1 VI in the driver has a high priority [Not sure if it works, obscure implimentation]
    Kind Regards,
    Tim L.
    iTm - Senior Systems Engineer
    uses: LABVIEW 2012 SP1 x86 on Windows 7 x64. cFP, cRIO, PXI-RT
    Solved!
    Go to Solution.

    Ben,
    I debated wheter or not to put more information in my post, I didn't want to bore my potential support Sensei's.
    Here Goes:
    As I hinted in my initial post, I am devoloping a set of drivers for my large application.
    I am using a compact Field Point and am under some fairly aggressive rescource pressures.
    Heavy RS422/485 Serial Comms @115200, Digital Acquisition and some heavy data processing.
    My understanding of this type of system (Jump in if you have any improvement suggestions):
    Priority #1 [High Priority](Producer) is to get data out of the Acquisition Buffers and in my case, perform Writes/Outputs/control activities as demanded.
    So any "Hardware" Device Driver Daemons that I lanuch need to be run at high priority.  The drivers should do as little as is necessary so as not to hog this thread. Event based architecure is preferred over polled.
    These drivers tend to be launched as Daemons so that they can run in a different priority and are not affected by other activities, they are inherently asynchronus.
    Priority #2 [Above Normal Priority](Consumer->Producer) Protocol/state interpretation/Data Filtering.
    Now that the data is out of the buffers, what does it mean? is it a valid communicationss message, was there a button pushed, is there an object in the transducer field.
    These functions may take a bit longer (but not too much) to execute, but as they are on a lower priority, buffers can continue to be emptied.
    These "filters" tend to be launched as Daemons also so that they can run in a different priority and are not affected by other activities they are inherently asynchronus.
    Priority #3 [Normal Priority](Consumer) Number Crunching, Heavy Lifting , Control determination..
    An event has occurred and some caculation interpretation and potentialy control needs to be performed, Do it.
    Tend to be event based and as there are multiple stimulii tend to be best managed by an event structure.  This allows for interaction with the front panel as well (should the need arise).
    Priority #4 [Low Priority](Slip-Scheduled) User interface/User Data/Report Generation.
    Who Cares if it is a bit late, Work away in background.  In the case of user updates, they can slip later and later, no need to catch up.
    For others reading this thread, I found This Module Help invaluable in understanding how Labview manages execution priority.
    Theory Done, I am essentialy a lazy programmer, and don't like to write and maintain too many different .vi's if I can help it, <Rant> ESPECIALY IF THEY ARE THE SAME VI WITH A DIFFERENT PRIORITY! </rant>.
    So I have written one Daemon and one Daemon manager (to rule them all). For each driver I require, I launch a Daemon, passing the "Base" Class object to the Daemon prior to Run, I rely on the override capability of polymorphism to choose the correct methods.
    My "Base" Driver class contains all of the functions required for operation.  I use it as an enforcable template for future driver development (It also auto fills in my Icon's wich is great for a Lazy Programmer like me).
    I have established that my protocol driver (Priority #2) is compatable with the same daemon Architecture from above, Instead of looking at hardware, it monitors a Queue/Notifier/User Events from the lower level hardware driver.
    I was very smug when I figured that one out, until.... I realised that they would need to be launched at different priorities to respect the RTOS, and thus my question.
    I am not trying to change priority per-se, but to choose one prior to launch and then to leave it.
    Cat Killed? (Curiosity Cured?)
    iTm - Senior Systems Engineer
    uses: LABVIEW 2012 SP1 x86 on Windows 7 x64. cFP, cRIO, PXI-RT

Maybe you are looking for