Evaluating a condition multiple times
Suppose I have a SQL query or PL/SQL code that I am using to conditionally fire components during show/accept processing.
This SQL query/PL/SQL code is expensive, takes a long time to run.
So, my question is:
How does the HTML DB engine work? Does it evaluate the condition once per show/accept processing and then "cache" the result (true/false) so that any other component can just re-use that answer without re-evaluating the (expensive) condition?
Or does it re-evaluate the condition over and over again? (hopefully not)
Thanks
The result of the condition would change between evaluation points if it referred to values in session state and stuff.
But if the query/code were invariant with respect to HTML DB, it could cache the result.
The shared pool will only cache the execution plan so that the SQL will not be hard-parsed the time, thats a small fraction of a second anyway.
Coming to think of it, if I am sure the condition will not change then I could just as well run it once-per-page using a Before Header computation to set a hidden item and change my subsequent conditions to just read this hidden item!
Thanks for your input.
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Time Evaluation with multiple time events
Dear Friends,
I have an issue in our current project. Kindly try to help me with a solution.
We are working on Time Management module with Positive Time Recording method and evaluation- India. (Payroll module is not implemented)
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I am upgrading the OS of my iPhone5 to iOS7 directly from the device.
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How to trigger Condition Access sequence multiple times for one line item?
Hi,
We have a situation that, User will enter a Promo code (custom Field) in Sales order Header Additional data B tab to apply discount for line items.
Logic goes like this:
1. For each Promo code .. there may be multiple sale deals (Max 3 at this point).
2. For each line item (refering to tkomp table) we have to apply the sale deals (found above) the Condition access sequence will pick the right sale deal to apply the line item.
3.we have enhanced the tkomp structure to hold the sale deal.
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As we have the standard logic to trigger the condition access sequence once for each line item, how we can apply 3 sale deals for single line item. Is there any logic or way to trigger the condition access sequence multiple times for single line item with diffrent sale deals. ~ There may be one valid sale deal for one line.
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Sunil YHi Eduardo , Thanks for the response.
I am trying to explain again, this is the requirment given by the functional guys.
we have Promo code in Hearder Addtional data B tab --> Have to retrieve Sale Deals -->
At this point of time we may have at max 3 Sale Deals. we don't know which sale deal is vallied for which item we have in TKOMP. We have enhanced the TKOMP structure to hold one sale deal only (ZZPROMO).
We have enhanced USEREXIT_PRICING_PREPARE_TKOMP in RV60AFZZ to populate the value in TKOMP. Then it will go for diffrent access sequence to find the proper condition.
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Dear Friends,
I need your help regarding this Requirement.
Need to display the contractual years for every employee in the valueset.
If the emp is hired on 29-Feb-2004, then his contractual years should be as follows:
1) 29-feb-2004 to 28-feb-2005
2) 1-mar-2005 to 28-feb-2006
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Bapi_po_create1 is giving same system messages multiple time in the joblog
Hi Experts,
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can u plz suggest how to prevent these multiple appearances of same messages.
I am pasting the code below whn i ran this program in backgorund job log is having the messages.
Date Time Message text Message class Message no. Message type
08/06/2009 08:11:53 Job started 00 516 S
08/06/2009 08:11:53 Step 001 started (program ZZZTEST, variant &0000000000008, user ID BREDDY) 00 550 S
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Edited by: bhavani prasad kotharu on Aug 6, 2009 3:09 PMHERE IS THE CODE OF THE PROGRAM, WE R JUST PASSING SOME PO DATA TO THE BAPI_PO_CREATE1,ON RUNNING THIS PROGRAM IN BACKGROUND SAME SYSTEM MESSAGES ARE APPEARED MULTIPLE TIMES,----
REPORT zzztest.
DATA : lwa_bapimepoheader TYPE bapimepoheader
,lwa_bapimepoheaderx TYPE bapimepoheaderx
,li_bapimepoitem TYPE STANDARD TABLE OF bapimepoitem
,lwa_bapimepoitem TYPE bapimepoitem
,li_bapimepoitemx TYPE STANDARD TABLE OF bapimepoitemx
,lwa_bapimepoitemx TYPE bapimepoitemx
,li_conditions TYPE STANDARD TABLE OF komv
,li_return TYPE STANDARD TABLE OF bapiret2
, n TYPE c
PARAMETERS: p1 TYPE c AS CHECKBOX.
IF p1 = 'X'.
lwa_bapimepoheader-doc_type = 'NB'.
lwa_bapimepoheader-purch_org = 'NA00'.
lwa_bapimepoheader-pur_group = 'C02'.
lwa_bapimepoheaderx-doc_type = 'X'.
lwa_bapimepoheaderx-purch_org = 'X'.
lwa_bapimepoheaderx-pur_group = 'X'.
lwa_bapimepoitem-po_item = '10'.
lwa_bapimepoitem-material = '000000000000020111'.
lwa_bapimepoitem-plant = 'CA01'.
lwa_bapimepoitem-vend_mat = '1000'.
lwa_bapimepoitem-quantity = '10'.
lwa_bapimepoitem-orderpr_un = 'M'.
lwa_bapimepoitem-no_more_gr = 'K'.
lwa_bapimepoitem-agreement = '4600000095'.
lwa_bapimepoitem-agmt_item = '10'.
lwa_bapimepoitem-pricedate = 'X'.
lwa_bapimepoitem-price_date = '20071030'.
lwa_bapimepoitem-no_rounding = 'X'.
APPEND lwa_bapimepoitem TO li_bapimepoitem.
lwa_bapimepoitemx-po_item = '10'.
lwa_bapimepoitemx-po_itemx = 'X'.
lwa_bapimepoitemx-po_itemx = 'X'.
lwa_bapimepoitemx-material = 'X'.
lwa_bapimepoitemx-plant = 'X'.
lwa_bapimepoitemx-quantity = 'X'.
lwa_bapimepoitemx-po_unit = 'X'.
lwa_bapimepoitemx-orderpr_un = 'X'.
lwa_bapimepoitemx-acctasscat = 'X'.
lwa_bapimepoitemx-agreement = 'X'.
lwa_bapimepoitemx-agmt_item = 'X'.
lwa_bapimepoitemx-pricedate = 'X'.
lwa_bapimepoitemx-price_date = 'X'.
lwa_bapimepoitemx-preq_no = 'X'.
lwa_bapimepoitemx-preq_item = 'X'.
lwa_bapimepoitemx-no_rounding = 'X'.
APPEND lwa_bapimepoitemx TO li_bapimepoitemx.
DATA: lo_msg_handler TYPE REF TO cl_message_handler_mm.
CALL METHOD cl_message_handler_mm=>get_handler
IMPORTING
ex_handler = lo_msg_handler.
lo_msg_handler->remove_all( ).
lo_msg_handler->cleanup( ).
CALL FUNCTION 'BAPI_PO_CREATE1' "in background task
EXPORTING
poheader = lwa_bapimepoheader
poheaderx = lwa_bapimepoheaderx
testrun = 'X'
NO_MESSAGING = c_x
NO_MESSAGE_REQ = c_x
no_authority = 'X'
IMPORTING
expheader = lwa_bapimepoheader
TABLES
return = li_return
poitem = li_bapimepoitem
poitemx = li_bapimepoitemx
conditions = li_conditions.
ENDIF.
Edited by: bhavani prasad kotharu on Aug 6, 2009 3:38 PM -
FM RV_INVOICE_DOCUMENT_READ not getting KONV details when ran multiple times
Hi, I'm calling the Function Module 'RV_INVOICE_DOCUMENT_READ' with the parameter KONV_READ as 'X' thru one of the Output type via Smartform driver program from VF02. I found that this FM was not returning KONV(XKOMV) details. When I debugged, I came to know that when this FM is run multiple times, only for the initial time it fetches KONV details. This FM was triggered by standard program first and later was called in my Smartform Driver program. Inside this FM, it was checking against an internal table 'TABGL' and was fetching KONV details if it is initial. For the first time this internal table(TABGL) will be initial and after fetching KONV details, it is filled with Condition record(KONV-KNUMV). So for the second time call of this FM, KONV details are not fetched. To confirm this I ran this FM from SE37. For the first time it fetched KONV details. In the same session I executed again. This time it didn't populate KONV details, whereas VBRK, VBRP, VBPA details were fetched even in the second run. Could you please let me know if we can use this FM for getting KONV details irrespective of number of times it has been called before. Thanks, Adithya M.
Try to call RV_INVOICE_REFRESH before calling RV_INVOICE_DOCUMENT_READ again.
Regards,
Raymond -
Issue in reading multiple time properties file
Use Case:
I have a page in which i have to show some Outage Messages on page. So I have configured outage message in properties files. This message should me rendered each time when it finds that properties file in class path or it finds the values w.r.t their keys.
So what I decide that I shall write java method and call this method on Loading the page but here what happen is that whenever that page is load each time that reader file will call , that will create memory leak .
So, anyone help me on this. What will be the best approach for that reading multiple times properties file?
I will be grateful for any help you can provide
ThanksHi,
have a bean at applicationScope, somewhat like this
import java.util.HashMap;
public class ApplnProperties {
private HashMap _propMap;
public HashMap getPropMap() {
if(_propMap == null){
//read the properties file and populate _propMap
return _propMap;
}here we put condition _propMap == null so it would be called only once during application lifecycle.
and on page you can refer the prop map like following
#{beanName.propMap['KEY1']}Regards, -
Need to Restrict the usage of same conditn type multiple times in same PO
Dear All
The system is allowing the usage of one condition type multiple times in the same PO line item.
We want to put restriction in such a way that "one condition type if used should not be allowed to use again for that line item.
Is there any solution for this through Configuration settings or we need to go for some enhancements?
Please suggest me the enhancements available to achieve this requirement.
Thanks & Regards
BalaI think you have to make use of an exit (EXIT_SAPLMEKO_002) or a BADI (ME_PO_PRICING_CUST)
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BPM Process split, Or Split, Conditional, Multiple Gatways
Hi
I am New to this. Please explain what are these and when we use these (split, Or Split, Conditional, Multiple ) when developing a BPM Process. Also where we define rules in BPMThe Studio documentation might help a little (download it from http://download.oracle.com/docs/cd/E13154_01/bpm/docs65/index.html -> click "PDF" beside the "BPM Studio Guide" link).
At a high level, the Split activity speeds the process by allowing multiple parallel processing of an instance.
The Or Split activity is similar to a Split but the Conditional transitions create the copies going through the circuit. Only if all of the Conditional transitions are false is the one Unconditional transition taken.
The Multiple activity allows any number of instances to be created from a single instance using logic hit at runtime. This is useful in processes that must solicit information from a number of different sources and these sources may not be known until runtime (for example, collecting bids from multiple suppliers). Only one outgoing transition is allowed from a Mulitple activity. A Subflow activity is often used after a Mulitple, which enables you to send the copied instances to multiple processes depending upon the information you need to retrieve.
All three of these must be paired with a Join activity. The Join activity rejoins the copies of the replicated instances with the original parent instance after they have completed the Split, Or Split or Multiple circuit
The "Conditional" activity is similar to the traditional decision diamond that has been drawn on flow charts for years. Unlike the Split, Multiple and Or Split activities described above, the Conditional only has one instance flowing out of it via one transition at runtime. Typically in the process's design you might have a Conditional activity with an unconditional transition going to an activity downstream and a conditional transition going to another activity downstream. At runtime when the work item instance reaches the Conditional activity the work item instance either flows through the conditional transition (if it evaluates as true) or else the unconditional transition if the conditional transition evaluated as false.
The key thing to remember is that coming out of a Conditional activity, the work item instance can only exit via one transition (one path). This is the different when work item instances leave a Split, Or Split or a Multiple activity. For these three gateway activities, copies of the work item instance can flow out of these activities via several paths concurrently.
Hope this helps,
Dan -
Call the owning VI multiple times
Hi all,
I'm trying to call the owning VI multiple times and wasn't sure if it's possible.I trying to call the same VI within a VI with different condition.
I have this VI as a template with reentrant enabled (VI_1), and inside the loop, it will call another instance of this template (call it VI_2) and wait until called VI (VI_2) completes and proceed to next action. The problem is wait until done doesn't wait although I set it to True. Can someone tell me what I'm doing wrong? or even this is possible.
Thank you in advance.
Solved!
Go to Solution.
Attachments:
VIT_Reentrant.png 18 KBSo the VI is calling itself?
If so you can drop the VI onto it's own diagram if it's set to reentrant in LabVIEW version 2009 and later.
Ton
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
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My LabVIEW Ideas
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Calling same form multiple times
Hi, i need to call a single form with different table names as parameters depending on conditions.
for eg here is the approach
if flag1_is_set
call form1 multiple times with table1, table2....... as parameters
"and i can avoid this
" form 1 using table 1
" form 1 using table 2
" form 1 using table 3
" form 1 using table 4
" form 1 using table 5
elseif
flag2_is_set
form 1 using table 2
elseif
flag3_is_set
form 1 using table 3.
but i cannot call forms like this. can someone suggest
an equivalent implementation on how to do this.
if i dont implement in the above mentioned approach i have to code the same thing with minor changes multiple times
thanks.
your help would be appreciated.
kranthi.You might try passing a field symbol (itab) in the tables.
And assign the filed symbol with your itab as per the condition.
Check if the program below gives you any idea.
REPORT Z_RAM_DYN_TAB_IN_FORM.
PARAMETERS : P_TAB1 TYPE C.
DATA: lt_users2 type standard table of usr02.
DATA: lt_users1 type standard table of usr01.
FIELD-SYMBOLS: <fs_itab> type standard table.
SELECT * into table lt_users1 FROM usr01.
SELECT * into table lt_users2 FROM usr02.
IF P_TAB1 eq 'X'.
ASSIGN lt_users1 to <fs_itab>.
ELSE.
ASSIGN lt_users2 to <fs_itab>.
ENDIF.
PERFORM test_form TABLES <fs_itab>.
FORM test_form TABLES x_itab .
FIELD-SYMBOLS: <fs_wa> type any.
FIELD-SYMBOLS: <fs_field> type any.
LOOP AT x_itab ASSIGNING <fs_wa>.
DO 5 times. "Write first 5 fields of itabs.
ASSIGN COMPONENT sy-index OF STRUCTURE <fs_wa> to <fs_field>.
WRITE : <fs_field>.
ENDDO.
WRITE :/.
ENDLOOP.
Thanks,
Ram
Message was edited by: Ram Manohar Tiwari -
Custom tag library called multiple times
Hi ppl ,
I have a custom tag library which i use to populate some menu components. When i do call my custom tag library though , it is called multiple times, use case is as follows.
I have menu tabs and menu bars which thanks to Mr.Brenden is working splendidly as so:-
<af:menuTabs>
<af:forEach var="menuTab" items="#{bindings.menu.vwUserMenuTabRenderer.rangeSet}">
<af:commandMenuItem text="#{menuTab.MenuLabel}"
shortDesc="#{menuTab.MenuHint}"
rendered="true"
immediate="true"
selected="#{sessionScope.selectedMenuId == menuTab.MenuId }"
onclick="fnSetSelectedValue('#{menuTab.MenuId}')" >
</af:commandMenuItem>
</af:forEach>
</af:menuTabs>
<af:menuBar>
<af:forEach var="menuBar" items="#{bindings.menu.vwUserMenuBarRenderer.rangeSet}">
<af:commandMenuItem onclick="return clickreturnvalue()"
onmouseover="dropdownmenu(this, event,#{menuBar.MenuId}, '150px')"
onmouseout="delayhidemenu()"
text="#{menuBar.MenuLabel}"
action="#{menuBar.MenuUri}"
rendered="#{menuBar.ParentId == sessionScope.selectedMenuId}"
immediate="true" />
</af:forEach>
</af:menuBar>
</afc:cache>
now all of this code is within a subview , and just directly below the subview tag , i have the call to my custom tag library:-
<myCustomTagLib:menuCascade />
only issue now is that assuming i have in all 7 menu bar components, the doStartTag is called 7 times. the relevant code within my custom tag class is as follows :-
public int doStartTag() throws JspException {
return (EVAL_BODY_INCLUDE);
public int doEndTag() throws JspException {
try {
declareVariables();
return EVAL_PAGE;
}catch (Exception ioe) {
throw new JspException(ioe.getMessage());
and within my declareVariables method i do an out of the jscript ( out.print(jscript.toString()); ) which is a simple string generated based on certain conditions...
now it seems to be working fine on the front end , but when i view the source of the page, i notice that the declaration is called multiple times, and this happens because the doStartTag method is called multiple times, i haven't even nested the call to the custom tag within the menu components , any clue as to whats going wrong ?
Cheers
KHi,
if you add the following print statement
System.out.println("rendering "+FacesContext.getCurrentInstance().getViewRoot().getViewId());
Then the output in my case is
07/04/24 08:14:04 rendering /BrowsePage.jsp
07/04/24 08:14:05 rendering /otn_logo_small.gif
The image comes from the file system, which means it is rendered by the JSF lifecycle. If you reference the image with a URL then the lifecycle doesn't render the image but only refrences it.
To avoid your prepare render code to be executed multiple times, just check for jsp and jspx file extensions, which will guarantee that your code only executes for JSF pages, not for loaded files.
The reason why this happens is because the JSF filter is set to /faces , which means all files that are loaded through that path
Frank
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