Which thread for events?
I'm writing a few new Objects that send events to listeners. I've been doing the "send to listeners" bit in the eventDispach thread so far, which seemed like the right place, but I've noticed that a lot of the api doesn't do this.
Is there a right or wrong way?
jim
I get it now, if I'm sending events then chances are
I'm responing to user input and therefore on the event
thread anyway. I'll have to watch for that, it seems
to me a lot of swing programs (JBuilder for example)
handle their threads quite badly.Right. When handling those events you should (generally)
return as quickly as possible so your UI remains responsive.
If you need to do something that takes awhile to process,
you may want to consider taking a look at SwingWorker:
http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html#SwingWorker
Similar Messages
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Applet UpCall from JS Event - Which Thread? Options
Hi,
With many direct references to the second lovely colour diagram on this
page: -
http://java.sun.com/javase/6/docs/technotes/guides/jweb/applet/applet...
I completely understand the hour-glass pause on the single-JS-thread
preservation architecture when the red arrow for the additional
"applet-spawned" thread tries to call down when the applet worker thread is
already calling down. Very clever; love it! Well done all involved.
What I'd like to know : -
1) When the additional applet-spawned thread calls down into Javascript and
that JS calls setTimeout(myFunc,1000) and myFunc eventually [up]Calls back
into the Applet, which thread will host the call to the applet method?
Default-Worker or Applet-Spawned? Is the tenuous link/association to a
round(ish)-trip preserved?
2) What happens when a single JAVA thread is the target of affection from
multiple Javascript UpCalls? (The scenario being a) an event upCalls to JAVA
b) The Applet takes some time before returning c) The single Javascript
thread is now free to accept further events or down-calls d) a subsequent
event has triggered another UpCall request e) but the thread is
busy/occupied with the first)
I am desperately trying to pin down architected behaviour here that is the
reciprocal of the down-call throttling. Please help if you can.
Cheers Richard MaherHi Baftos,
Thanks for your reply and help. Yes, anecdotally, UpCalls back to the Applet are handled by the thread that called down to Javascript. (As advertised and documented in the Round-Trip scenario). And the good news is that events that call back into the Applet (regardless of provenance) are handled by the appropriate "Applet N LiveConnect Worker Thread". So if you want to callback to the Applet Worker Thread then just setTimeout(yourFunc,0) rather than just yourFunc().
This is expected/wished-for behavior and it would be nice to see it documented somewhere? (The event-processing-thread" bit)
Now, if someone can answer part 2 of my question then that would be magnificent!
"> 1 Javascript UpCall" and "only one target Thread"
Cheers Richard Maher -
Which method is used for event creation
Dear All,
My client has more then one Purchase Organization. Workflow for Purchase order release very from pur org to pur org. For example - workflow WS92000030 is trigger when PO is created for India pur org where as workflow WS92000021 is trigger when PO is created for US pur org.
I checked and found that same Object Type - BUS2012 & event - RELEASESTEPCREATED is used in all Pur. Org PO release workflow. Also I found in Transaction code - SWETYP that Type linkage activate for BUS2012, RELEASESTEPCREATED in all the PO workflow - WS92000030 & WS92000021.
As per my knowledge, event can be created in various way such as Function module, Change document, General status management, Business Transaction Events etc.
Can some one guide me, how can I found that which method is used for event creation in different pur org?
How can I fould what is the fuctional module used for event creation if Fuctional module used for event creation.
For your information, I can see in T. Code - SWUO that 'Result dependent on a check function module' for all the workflow - WS92000030, WS92000021 etc.
Thanks inHi Sahu,
I dont think they have used the Function module or change document or any other kind of methods to trigger the workflow. This is because RELEASESTEPCREATED method is a standard method and it will be triggered by standard SAP. They can not make changes in standard sap saying RELEASESTEPCREATED should be triggered for this Purchase Org .
Istead what i think is, they might have given the Event Condition for each workflow.
In SWDD>> basic settings>> Start Events, we can give condition on triggering the workflow.
Please check this.
Regards,
Gautham -
Which are the standard classes for events in ALV and explain each class pls
which are the standard classes for events in ALV and explain each class pls
POINTS WILL BE AWARDED,
REGARDS,
jagrut bharatkumar Shuklahi,
some links.
www.sapgenie.com
www.abap4u.com
http://help.sap.com/saphelp_nw2004s/helpdata/en/5e/88d440e14f8431e10000000a1550b0/frameset.htm
download the PDF from following link.
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCSRVALV/BCSRVALV.pdf
The ALV object Grid methods allow the same functionality as ALV grid report function modules but are displayed within
a screen (dialog program). SAP has provided a suit of programs which demonstrate how to For examples see standard SAP
programs as detailed below:
BCALV_EDIT_01 This report illustrates the simplest case of using an editable/noneditable ALV Grid Control.
BCALV_EDIT_02 This report illustrates how to set chosen cells of an ALV Grid Control editable.
BCALV_EDIT_03 In this example the user may change values of fields SEATSOCC (occupied seats) and/or PLANETYPE.
The report checks the input value(s) semantically and provides protocol messages in case of error
BCALV_EDIT_04 This report illustrates how to add and remove lines to a table using the ALV Grid Control and how to
implement the saving of the new data.
BCALV_EDIT_05 This example shows how to use checkboxes within an ALV Grid Control. You learn:
(1) how to define a column for editable checkboxes for an attribute of your list
(2) how to evaluate the checked checkboxes
(3) how to switch between editable and non-editable checkboxes
BCALV_EDIT_06 This example shows how to define a dropdown listbox for all cells of one column in an editable ALV
Grid Control.
BCALV_EDIT_07 This example shows how to define dropdown listboxes for particular cells of your output table.
BCALV_EDIT_08 This report implements an ALV Grid Control with an application specific F4 help. The following aspects
are dealt with:
(1) how to replace the standard f4 help
(2) how to pass the selected value to the ALV Grid Control
(3) how to build an f4 help, whose value range depend on a value of another cell.
Rgds
Anversha -
Error while completing Wait for event step
Hi Gurus,
I have a Workflow developed which has a "Wait for Event" step.
In that step,I am facing a problem .It seems the step is not getting completed properly.
When I check in SWEL it shows the Event is triggered.But the next which is a 'Send Mail' step is not getting executed.
The Event shows action status as "Receiver started correctly".
When i executed "Complete Manually " in SWIA,it executed correctly and also the further steps got executed.
What could be the issue ?
Many Thanks in advance !
Regards,
Ameya KulkarniHello Ameya !
To one of my replies to this thread you have stated that no container elements are configured to wait for event step.
Without business object,event and container element with object reference, wait for event will not fire.
When the user changes the status in KO02, event fires and is seen in SWEL.But, if it should reflect in workflow, afore- mentioned details needs to be configured in wait for event step.
Have you configured this wait for event step with event 2 ?
Regards,
S.Suresh -
Registering for Event PROPERTY_SET_TEMPLATE
Hello,
i created a service, which registers for the PROPERTY_SET_TEMPLATE. The event is triggerd for any change of any property of the resource. Is there a possibility to trigger the event only if special properties are changed?
regards,
MarcoHi Marco,
no, there's not. See my answer before my last in this thread: Register a repository service to part of the repository manager? - here it's the same, just care about the "right" property when called; if you want to offer comfort, make the properties on which you want to react customizable.
Hope it helps
Detlev -
Hi,
Can any one help me on the below issue ?
while executing automated test case in test center it is showing as test case is in progress, then i navigated to virtual machine (where the test agent is online), there Internet
explore has opened automatically and my test case execution started, but with in a seconds IE has closed . However, in test center, test case status is showing as in
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Here my question is in lab center-->virtual machine, IE has opened automatically and navigated the 2 or 3 links and with in seconds IE has getting closed. Why IE is getting closed without completing execution?
Error Message :
The description for Event ID 0 from source VSTTExecution cannot be found. Either the component that raises this event is not installed on your local computer or the
installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
(mtm.exe, PID 5240, Thread 4) FileAggregatorSessionInfo: Error occurred while deleting temporary directoryException: System.IO.DirectoryNotFoundException: Could not find a part of the path
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive, Boolean checkHost)
at Microsoft.VisualStudio.TestTools.Execution.Aggregation.FileAggregator.FileAggregatorSessionInfo.DeleteTemporaryDirectory(String temporaryDirectory)
the message resource is present but the message is not found in the string/message table
Thanks
Suresh
SureshHi,
Can any one help me on the below issue ?
while executing automated test case in test center it is showing as test case is in progress, then i navigated to virtual machine (where the test agent is online), there Internet
explore has opened automatically and my test case execution started, but with in a seconds IE has closed . However, in test center, test case status is showing as in
progress, after 2 or 3 min some of test cases getting passed and some are failed.
Here my question is in lab center-->virtual machine, IE has opened automatically and navigated the 2 or 3 links and with in seconds IE has getting closed. Why IE is getting closed without completing execution?
Error Message :
The description for Event ID 0
from source VSTTExecution cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
(mtm.exe, PID 5240, Thread 4) FileAggregatorSessionInfo: Error occurred while deleting temporary directoryException: System.IO.DirectoryNotFoundException:
Could not find a part of the path
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive, Boolean checkHost)
at Microsoft.VisualStudio.TestTools.Execution.Aggregation.FileAggregator.FileAggregatorSessionInfo.DeleteTemporaryDirectory(String
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QTAgentService.exe, AgentService: calling AgentObject.RunEndFileCopyComplete
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Process chain Error: This AND process is not waiting for event RSPROCESS
Hi All,
I am facing an error in the process chain in PRD.
Error message: This AND process is not waiting for event RSPROCESS.
We had a process chain which had two sub chains which run parallel and below of this we had AND process type and below of the AND process we had 4 more jobs.
Once the two subchains got successfully loaded, the and process should turn to green and further 4 jobs should start.
It is a daily load , it worked fine from past years,but suddenly the AND processtype is getting failed.The thing is in the two subchains if one got completed, the AND process process is not waiting for 2nd subchain to get completed.The AND process is turning to RED (status: cancelled) . I tried to repeat the AND process once after above 2 subchains loaded, but it didnt worked.
And i removed the existing AND process and created a new one and placed it in same place and activated and schedules again.but still it is getting failed with same error.
Thanks in advance,
Sai Chand.SHi,
If you did any transports related to that metachain we face similar kind of issues.
not only the AND process , we need to remove all the process before executing the AND process and create it again.
It helps you, you said your in production So you should take the proper approvals and do it.
Regards,
Yerrabelli. -
Query on Using fork with wait for event
Hi All,
I have a scenario in which a fork has two branches and one branch has the multiple steps along the line and also calls a subworkflow in one of the steps.
The second branch has a single wait for event to complete the workflow in case of a cancel event.
My understanding is that when the branch one executes and is on a single step decision or have gone inside a subworkflow and wating for user decision on the workitem created
Whenever the wait event is triggered on the main workflow the second branch gets executed completing the workflow and all the branch one steps and the subworkflow gets logically deleted removing all the workitem from the inbox.
Do I have to do any specific process control in main workflow to make sure that the subworkflow is deleted .
Please clarify on this.
Thanks,
Charan.It should be taken care by itself. No additional steps required.
Regards, IA -
Suggestions thread for ABAP FAQ sticky
See these threads for "online collections" in the ABAP Development forums =>
FAQ's, intros and memorable discussions in the ABAP General Forum
FAQ's, intros and memorable discussions in the ABAP Data Dictionary Forum
FAQ's, intros and memorable discussions in the ABAP UI Programming Forum
FAQ's, intros and memorable discussions in the ABAP Form Printing Forum
FAQ's, intros and memorable discussions in the Enhancements & Modifications
FAQ's, intros and memorable discussions in the Performance and Tuning Forum
FAQ's, intros and memorable discussions in the Data Transfers Forum
FAQ's, intros and memorable discussions in the ABAP Objects Forum
Edited by: Julius Bussche on Apr 21, 2009 5:22 PMABAP General
Subtotals in alv list. => Subtotals in ALV <= Added and moved to UI programming
Can we modify a sub-total in ALV => Subtotals text in ALV /Modification of Subtotals in ALV <= Moved down to new thread.
cl_salv_table - Save Layout => ALV OM Save layout option <= Moved down to new thread.
Report with page break. => ALV Report with page break. <= Moved down to new thread.
ALV Sorting Not Working after Adding Checkbox to ALV => ALV Sorting and Group Functionality working with Checkbox <= Moved down to new thread.
Calculating Total with Checkbox in ALV Grid => Calculating Total with Checkbox in ALV Grid <= Moved down to new thread.
DUMP WHILE SUMMATION IN ALV => General Fieldcatalog error. <= Moved down to new thread.
Problems with REUSE_ALV_FIELDCATALOG_MERGE =>Problems with REUSE_ALV_FIELDCATALOG_MERGE <= Moved down to new thread.
Must i_structure_name for LVC_FIELDCATALOG_MERGE be pre-defined in dict? => Converting SLIS fieldcatalog to LVC fieldcatalog <= Moved down to new thread.
Capture Checkbox Value in ALV Grid => Capturing the editable fields values in ALV <= Moved down to new thread.
how to refresh table display using slis and 'reuse_alv_grid_display method. => Refreshing the ALV Display <= Moved down to new thread.
fetch data in edittable field in alv using REUSE_ALV_GRID_DISPLAY_LVC FM => Reading the editable values for ALV LVC function <= Moved down to new thread.
Radibutton in ALV Report output => Radio buttons in ALV report <= Moved down to new thread.
Edit rows in ALV => Usage of Styles in ALV for disable/enable input option <= Moved down to new thread.
how to copy/delete file => executing Unix commands <= Hmmm... c-calling the 'system' does not work in my systems during normal operations. See system param 'rdisp/call_system' which can be disabled, then the code dumps. Is there a different thread with DATASET commands? SXPG?
express CR_LF => ABAP char Utilities CR_LF use , replace '##' in a application server <= Ahhh yes, I remember this series. This is one of the nicer threads from it... Added.
String Operations which contain the special character '#' in BDC Session => ABAP char Utilities Horizontal_tab use , replace '#' in application server file <= Sufficiently covered by the next thread.
Problem with statement "find all occurences of ..." => ABAP char utilites Newline, replace '#' in application server in end of line <= Added.
How to Send Email to Outlook? =>sending mails to outlook <= Added.
FM for uploading Image to SAP => upload image to mime repository <= Added.
Passing an Internal Table to a Report executed through 'Submit' => use of Import and export refer Rich Heilman's code <= Added.
Create a parameter to enter a password => Selection parameter password behaviour <= Added.
ABAP Dictionary
=>
Form Printing
Exporting Graphics from SAP =>Download Logo from SE78 <= Okay, added... but the thread is rather old and ws_download is obsolete now, isn't it?
BDC for SE78 Transaction => Upload Logo programatically <= Hmmm... external performs and guests. I would like more opinions on this one before adding.
UI Programming
[Top of page in OO ALV|TOP_OF_PAGE in ALV Using CL_GUI_ALV_GRID ]=> Top of page in OO ALV <= I understand that this blog was very helpfull, but it is full of email addresses. Hmmm.. tough call Is there another example (thread) without any "here is my mail address" comments. We want to avoid those.
[Top of page Alignments in Normal ALV|Alignment of Data in TOP-OF-PAGE in ALV GRID] => Top of page in normal ALV <= this is more wiki material in a blog, but again often asked... Hmm.. lets go through the others first and come back to this one.
To display URL as a hyperlink (along with simple text) in dialog program => URL display using HTML Viewer <= Added.
select-option on dynpro => Select-options usage in Module pool programming <= Added.
New! =>
Enhancements and Modifications
=>
ABAP Performance and Tuning
=>
Data Transfers
=>
ABAP Objects
=>
Edited by: Julius Bussche on Oct 3, 2008 10:31 PM
Edited by: Julius Bussche on Oct 3, 2008 10:34 PM
Edited by: Julius Bussche on Oct 3, 2008 10:38 PM
Edited by: Julius Bussche on Oct 3, 2008 10:43 PM
Edited by: Julius Bussche on Oct 3, 2008 10:55 PM
Edited by: Julius Bussche on Oct 4, 2008 12:06 AM
Edited by: Julius Bussche on Oct 4, 2008 12:40 AM
Edited by: Julius Bussche on Oct 4, 2008 12:57 AM
Edited by: Julius Bussche on Oct 4, 2008 1:23 AM
Edited by: Julius Bussche on Oct 4, 2008 3:27 PM
Edited by: Julius Bussche on Oct 4, 2008 3:39 PM
Edited by: Julius Bussche on Oct 4, 2008 5:40 PM
Edited by: Julius Bussche on Oct 4, 2008 5:59 PM
Edited by: Julius Bussche on Oct 4, 2008 7:17 PM -
Error in Workflow wait for event node
Hello Experts,
I am working on one QM notification. I shall explain the scenario first:
1) User will take the usage decision on inspection lot in QA11. When user will take decision and save inspection lot BUS2045 event USAGEDECISIONMADE will be triggered and initiate my workflow here.
2) After workflow initiation system will create notification and send to approver, but here i have wait step in my workflow for BUS2078 - Created (Notification).
wait for Event step
BO: BUS2078
EV: CREATED
I am posting error below:
Error when starting work item 000000294361
Error when processing node '0000000060' (ParForEach index 000000)
Error when creating a component of type 'Wait Step'
Error when creating an event item
Error within method CL_SWF_RUN_WIM_EVENT->_CREATE_WORKITEM_CONTAINER
Error within method CL_SWF_RUN_WIM_EVENT->_GET_INIT_WORKITEM_CONTAINER
Workflow 000000294361 wait step 0000000060: No valid object ID in container element 'Notification
Node 60 - wait for event step.
Re.,
GuriHi,
Based on your description what I felt is you are making use of a wait step in which you have choose to wait till BUS2078 event CREATED is occured ... right.. Now can you please clear me that where and how this event will triggered.
or is it some thign like you are making use of event creator step and in this case, When ever you are making use of the eventcreator step and a BOR object inside it make sure that specific BOR object is already instatitaed in the workflow container , if it is instantiated then only it will try to identify the instance or the BOR and it will try to rasie the event.
Regards
Pavan -
How to run a thread for second time ?
I have a written a ThreadPool, but I found that basically a thread is not running for the second time. i.e First i call run() method and call stop(). If i call again run() method for the same thread, it is not running. What should I do, If i want to run the thread for the second time ?
class NewThread implements Runnable {
String name;
NewThread(String a) {
name=a;
public void run() {
try{
for(int i=0;i<5;i++) {
System.out.println("Thread :" + name + " #" +i);
Thread.sleep(5);
catch (Exception e) {
e.printStackTrace();
class threadRunnableTest {
public static void main (String args[]) {
Runnable runnable=new NewThread("BaSkAr");
Thread thread = new Thread(runnable);
try{
System.out.println("First Thread is starting !!!");
thread.start();
Thread.sleep(2000);
System.out.println("First Thread it to be stopped!!");
thread.stop();
System.out.println("Second Thread is starting !!!");
thread.start();
Thread.sleep(2000);
System.out.println("Second Thread it to be stopped!!");
thread.stop();
catch (Exception e) {
e.printStackTrace();baskark wrote:
I have a written a ThreadPool, but I found that basically a thread is not running for the second time. i.e First i call run() method and call stop(). If i call again run() method for the same thread, it is not running. What should I do, If i want to run the thread for the second time ?
class NewThread implements Runnable {
String name;
NewThread(String a) {
name=a;
public void run() {
try{
for(int i=0;i<5;i++) {
System.out.println("Thread :" + name + " #" +i);
Thread.sleep(5);
catch (Exception e) {
e.printStackTrace();
class threadRunnableTest {
public static void main (String args[]) {
Runnable runnable=new NewThread("BaSkAr");
Thread thread = new Thread(runnable);
try{
System.out.println("First Thread is starting !!!");
thread.start();
Thread.sleep(2000);
System.out.println("First Thread it to be stopped!!");
thread.stop();
System.out.println("Second Thread is starting !!!");
thread.start();
Thread.sleep(2000);
System.out.println("Second Thread it to be stopped!!");
thread.stop();
catch (Exception e) {
e.printStackTrace();
It's usually helpful to check the documentation:
[http://java.sun.com/javase/6/docs/api/java/lang/Thread.html#start()|http://java.sun.com/javase/6/docs/api/java/lang/Thread.html#start()]
start
public void start()Causes this thread to begin execution; the Java Virtual Machine calls the run method of this thread.
The result is that two threads are running concurrently: the current thread (which returns from the call to the start method) and the other thread (which executes its run method).
It is never legal to start a thread more than once. In particular, a thread may not be restarted once it has completed execution.
So, make a new java.lang.Thread -
How is it possible to make sure that LV uses the same thread for several threadsafe DLL calls?
Hello,
i have a thread safe DLL and most functions are called from serveral threads from the LV apllication without problems.
In case of an error i have to call an error handler function in this DLL (like WinAPI: GetLastError()) from the same thread which has called the function that failed before.
I can't use the user interface execution because some functions need a long execution time and i don't want to balk the user interface.
All other executions than the user interface execution have more than one thread and in most cases the DLL function calls were executed from different threads - so the error handling doesn't work...
Any idea?
Thanks for your help!Hmmm....
How about wrapping all of your dll calls in a single VI (or an Action Engine ) and make sure the VI's thread is NOT set for "Same as caller".
"Threadconfig.vi" (sp?) will also let you dictate the number of threads associated with an execution system. Set your target thread for "1".
Not sure on the above.
Please correct me if this is wrong!
Ben
Message Edited by Ben on 07-19-2007 08:26 AM
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction -
Hi everyone,
I'm using wait for event step in my workflow of a custom event called zevent2.
I'm not using the event as a start event of the workflow.The event is getting triggered at a certain point of the workflow programmatically.
So for that what should be the entry in SWE2? I've maintained the following entry for zevent2 at swe2 tcode.
Object type: BUS2000126
Event: ZEVENT2
Receiver type:
Receiver function module: SWW_WI_CREATE_VIA_EVENT_IBF
In swel I'm finding out that event got triggerd but it is giving error "No Receiver Entered".
And the workflow is getting stuck at 'wait for step event'.
So can anybody please tell me what is the step am I missing? is the swe2 correct?
Thanks & Regards,
AnirbanHI....
you have to specify RECIEVER TYPE without which you will be getting this error
goto SWE2 and give the value and your problem will be done
regards
Edited by: Mohit Kumar on Feb 20, 2009 10:50 AM -
There used to be a little icon indicating which threads I am participating in
There used to be a little icon (to the left of the subject line) indicating which threads I am participating in. Such an icon doesn't appear anymore ?
It's difficult to track which threads I am participating in within a "Community"
Hemant k ChitaleAman.... wrote:
Hemant,
Probably, for this they have made that Activity tab where you can see what is going on. Not quite matching with the old , "watching" of the thread one has participated.
Aman....
But now one has to make a side-trip to the 'activity' and 'communications' tabs. Before, I could just visually scan the message listing for a forum and quickly identify threads or users I was watching ... and participating constituted 'watching'.
Maybe you are looking for
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