Accessing Array and Iterating Array list - Need Oracle Pro Assistance

Hi,
This is the third time i am posting the question, :( .
I want some advice on how to iterate through a Array list which has an array of tasks/processes and make calls to the corresponding subprocess for each element in the list.
We are looking for a BPMN approach.
Any example or ideas would be of great help.
My requirement states that i will get a list of tasks from a Rules Engine and i have to use BPM to iterate through the tasks and make calls to each tasks(which is a subprocess call).
In Oracle BPM 11g I would like to use a multi-instance subprocess to send a task to a user for each item in an array. There are an unknown number of rows in the array. Does anyone have a good example of how to do this?
I am using BPM Oracle 11g but any help 10 will also help us.
I am reposting again this question , hoping that someone will help us
Thanks
Edited by: user9083699 on Aug 28, 2010 4:03 AM

I am not the expert on 11g, however, in 10g, if I understand correctly... it sounds like you should be able to use PAPI to notify instances/sub processes, etc....
With a list of Instances, you can search for that instance and notify it...
If you have a list of processes, that need to be started, you can create an instance within that process....
user9083699 wrote:
My requirement states that i will get a list of tasks from a Rules Engine and i have to use BPM to iterate through the tasks and make calls to each tasks(which is a subprocess call).If you are just trying to initiate a sub-process, (btw, why would they have to be subprocesses?), It sounds like you should be able to create a global in the process, and just call it with PAPI...
I'm still a little fuzzy, on how this business requirement turned up... however, maybe this helps a little?
-Kevin

Similar Messages

Accessing Array and Iterating Array list

Hi,
I want some advice on how to iterate through a Array list which has an array of tasks/processes and make calls to the corresponding subprocess for each element in the list using BPM 11g
We are looking for a BPMN approach.
Any example or ideas would be of great help.
My requirement states that i will get a list of tasks from a Rules Engine and i have to use BPM to iterate through the tasks and make calls to each tasks(which is a subprocess call).
In Oracle BPM 11g I would like to use a multi-instance subprocess to send a task to a user for each item in an array. There are an unknown number of rows in the array. Does anyone have a good example of how to do this?
I am using BPM Oracle 11g but any help 10 will also help us.
I am reposting again this question , hoping that someone will help us
Thanks

Others probably are getting it, but I'm not really sure what it is that you're tyring to do with the list of instances.
I'm getting lost in two areas. First, you mentioned you have a rules engine returning a list of instances. Mostly out of curiosity - why do you have an array of instances being created by a rules engine? What is the use case? Asking because I'm sure to learn something new from you on this - I'm used to seeing a lot of things coming back from an invoked rule, but never an array of instances before.
Second (sure you know this), in both 10g and 11g there is a Split-N activity that you can use to parse (as the name implies) "N" number of instances. This "N" is discoverable at runtime. If you have 14 instances in your array at runtime, it would go into a Split-N activity and 14 instances would automatically be spawned. The 14 instances would flow from the Split-N to its corresponding Join activity in the process.
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Accessing Array and Iterating Array list - call corresponding subprocess

Hi,
I want some advice on how to iterate through a Array list which has an array of tasks/processes and make calls to the corresponding subprocess for each element in the list.
Any example or ideas would be of great help.
My requirement states that i will get a list of tasks from a Rules Engine and i have to use BPM to iterate through the tasks and make calls to each tasks(which is a subprocess call).
Thanks

Are you using Oracle BPM 10 or are you using 11?
Dan

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How do you "push" into an array and return array without commas?

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Hi Benoit,
I believe the thing that's missing is a shift register.
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Hello
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I need to take elements from within 2 nested for loops and place them in an array at the specific row and column that I need.

I have tried intializing an array and replacing elements by specifying a particular row, and column, but in the end I get an array with only one element replaced, and I suspect that it is because as the for loops are running through their iterations each time the array is re-initializing. I have a simple vi that I will post below, it is not the exact situation that I have but is a good place for me to get some understanding. I have the row and column indexes being driven by the inner and outer loop iterations, which gives me the pattern I need. I am using the inner iterations as array elements. How do I set this up so that it works and d
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Attachments:
Untitled.vi ‏26 KB

I have fixed a number of things in your vi.
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Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
your_vi.vi.zip ‏13 KB

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Hi all
Please see the code below. I've posted this code in another thread however the original issue was resolved and this is now a new issue I'm having although centered around the same code.
The issue is that I'm populating an array with dictionary objects. each dictionary object has a key and it's value is another array of custom objects.
I've found that the code runs without error and I end up with my array as I'm expecting however all of the dictionary objects are the same.
I assume it's something to do with pointers and/or re-using the same objects but i'm new to obj-c and pointers so i am a bit lost.
Any help again is very much appreciated.
// Open the database connection and retrieve minimal information for all objects.
- (void)initializeDatabase {
NSMutableArray *authorArray = [[NSMutableArray alloc] init];
self.authors = authorArray;
[authorArray release];
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NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
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if (sqlite3_open([path UTF8String], &database) == SQLITE_OK) {
// Get the primary key for all books.
const char *sql = "SELECT id, author FROM author";
sqlite3_stmt *statement;
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author *author = [[author alloc] init];
author.primaryKey = sqlite3columnint(statement, 0);
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// retained by the books array.
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if ([[author.title substringToIndex:1] compare:letter] == NSOrderedSame){
[tempauthors addObject:author];
} // if this is different letter, then we need to deal with that too...
else {
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NSDictionary *tempDictionary = [NSDictionary dictionaryWithObject:tempauthors forKey:@"authors"];
// add the dictionary to our appDelegate-level array
[authors addObject:tempDictionary];
// now prepare for the next loop...
// set the new letter...
letter = [author.title substringToIndex:1];
// remove all of the previous authors so we don't duplicate...
[tempauthors removeAllObjects];
// add the current author as this was the one that didn't match the Letter and so
// never went into the previous array...
[tempauthors addObject:author];
// release ready for the next loop...
[author release];
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if (tempauthors.count > 0){
NSDictionary *tempDictionary = [NSDictionary dictionaryWithObject:tempauthors forKey:@"authors"];
[authors addObject:tempDictionary];
else {
printf("Failed preparing statement %s
", sqlite3_errmsg(database));
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sqlite3_finalize(statement);
} else {
// Even though the open failed, call close to properly clean up resources.
sqlite3_close(database);
NSAssert1(0, @"Failed to open database with message '%s'.", sqlite3_errmsg(database));
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Message was edited by: dotnetter

Ok, so I know what the issue is now...I just don't know enough to be able to resolve it!
it's the tempAuthors objects.
It's an NSMutableArray which is create on the line before the start of the WHILE loop.
Having looked through the debugger, I can see that each dictionary object is created (with different codes which I assume are memory addresses) so all is well there. However, on each iteration of the loop in the middle there is an IF...ELSE... statement which in the ELSE section is clearing all objects from the tempAuthors array and beginning to repopulate it again.
Looking at the containing dictionary objects in the debugger I can see that the tempAuthors object that each contains has the same code (again, I'm assuming this is a memory address) - so if I understand correctly, it's the same object...I assumed that when I created the dictionary using the dictionWithObject call that I would be passing in a copy of the object, but it's referencing back to the object which I then go on to change.
Assuming the above is correct, I've tried several "stabs in the dark" at fixing it.
I've tried relasing the tempAuthors object within the ELSE and initialising it again via an alloc...init - but this didn't work and again looking through the debugger it looks as though it was confused as to which object it was supposed to be using on the following iteration of the WHILE loop (it tried to access the released object).
Having read a little more about memory management can someone tell me if I'm correct in saying that the above is because the tempAuthors object is declare outside the scope of the WHILE loop yet I then try to re-instantiate it within the loop (does that make sense???).
Sorry for the long post...the more I can understand the process the less I can hopefully stop relying on others for help so much.
I am continuing to read up on memory management etc but just not there yet.
Regards
Wayne

Oracle Arrays and getVendorConnection API and Class Cast Exception

I 've gone through various threads relating to the topic of Oracle Arrays and the getVendorConnecton API call to avoid the class Cast Exception.. i ve used all these but am still facing the problem...
I would appreciate it if some one could resolve the following queries :
I am using Weblogic 8.1 SP5 with oracle 8i
1. I read that the need to use the getVendorConnection API to make pl/sql proc calls with oracle arrays from the WL Server wont be required to avoid classCastException...
I tried to use the connection from the WL connection pool ..but it didnot work....I used the getVendorConnection API ..which also doesnot seem to work..
I got the Heurisitc Hazard exception...I used the Oracle 9i driver ie ojdbc14.jar ...after this the exception is not coming but still the code doesnt seem to work...
the snippet of the code is pasted below :
~~~~~~~~~~~~~~~~~~~~~~~code is : ~~~~~~~~~~~~~~~~~~~
/*below :
logicalCon is the Connection from the WL connection pool
JDBCcon is the JDBC connection. */
<div> try </div>
<div>{ </div>
<div>
<b>vendorConn</b> = ((WLConnection)logicalCon).getVendorConnection();
</div>
<div>
//Calling the procedure
</div>
<div>
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</div>
<div>
java.util.Map childMap1 = <b>vendorConn</b>.getTypeMap();
</div>
<div>
childMap1.put("SST_ROUTE_ENTRY", Class.forName("svm.stport.ejb.StaticRouteEntry"));
</div>
<div>
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<b>vendorConn</b>.setTypeMap(childMap1);
</div>
<div>
// Create an oracle.sql.ARRAY object to hold the values
</div>
<div>
/*oracle.sql.ArrayDescriptor arrayDesc1 = oracle.sql.ArrayDescriptor.createDescriptor("SST_ROUTE_ENTRY_ARR", JDBCcon); */
</div>
<div>
oracle.sql.ArrayDescriptor arrayDesc1 =
oracle.sql.ArrayDescriptor.createDescriptor("SST_ROUTE_ENTRY_ARR", <b>vendorConn</b>); // here if i use the JDBCcon it works perfectly.... <u>^%^%^%</u>
</div>
<div>
code to fill in the sst route entry array....
.....arrayValues1 */
</div>
<div>
/* oracle.sql.ARRAY array1 = new oracle.sql.ARRAY(arrayDesc1, JDBCcon, arrayValues1); */
</div>
<div>
oracle.sql.ARRAY array1 = new oracle.sql.ARRAY(arrayDesc1, <b>vendorConn</b>, arrayValues1);
</div>
<div>
callStatement = logicalCon.prepareCall( "? = call procName(?, ?, ?)");
</div>
<div>
/* ..code to set the ?s ie array1 */
</div>
<div>
callStatement.execute();
</div>
<div>
}catch(Exceptio e){
</div>
<div>
}</div>
<div>
finally </div>
</div>{</div>
<div>System.out.println(" I ve come to finally"); </div>
<div>}</div>
<div>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~code snippet ends here ~~~~~~~~~~~~~~``
</div>
I have observed that the control immediately comes to the finally block after the call to the createDescriptor line above with <u>^%^%^%</u> in the comment. If i use the JDBCCon in this line...it works perfectly fine.
Any pointers to where anything is getting wrong.
I have jst set the vendorCon to null in the end of the file and not closed it. Subsequently i have closed the logicalCon. This has been mentioned in some of the thread in this forum also.
Thanks,
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Jatinder Wadhwa wrote:
I 've gone through various threads relating to the topic of Oracle Arrays and the getVendorConnecton API call to avoid the class Cast Exception.. i ve used all these but am still facing the problem...
I would appreciate it if some one could resolve the following queries :
I am using Weblogic 8.1 SP5 with oracle 8i
1. I read that the need to use the getVendorConnection API to make pl/sql proc calls with oracle arrays from the WL Server wont be required to avoid classCastException...
I tried to use the connection from the WL connection pool ..but it didnot work....I used the getVendorConnection API ..which also doesnot seem to work..
I got the Heurisitc Hazard exception...I used the Oracle 9i driver ie ojdbc14.jar ...after this the exception is not coming but still the code doesnt seem to work...
the snippet of the code is pasted below :
~~~~~~~~~~~~~~~~~~~~~~~code is : ~~~~~~~~~~~~~~~~~~~Hi. Show me the whole exception and stacktrace if you do:
try
vendorConn = ((WLConnection)logicalCon).getVendorConnection();
java.util.Map childMap1 = vendorConn.getTypeMap();
childMap1.put("SST_ROUTE_ENTRY" Class.forName("svm.stport.ejb.StaticRouteEntry"));
vendorConn.setTypeMap(childMap1);
oracle.sql.ArrayDescriptor arrayDesc1 =
oracle.sql.ArrayDescriptor.createDescriptor("SST_ROUTE_ENTRY_ARR",
vendorConn);
oracle.sql.ARRAY array1 = new oracle.sql.ARRAY(arrayDesc1, vendorConn, arrayValues1);
callStatement = logicalCon.prepareCall( "? = call procName(? ? ?)");
callStatement.execute();
}catch(Exception e){
e.printStackTrace();
finally
try{logicalCon.close();}catch(Exception ignore){}
System.out.println(" I ve come to finally");
/*below :
logicalCon is the Connection from the WL connection pool
JDBCcon is the JDBC connection. */
<div> try </div>
<div>{ </div>
<div>
<b>vendorConn</b> = ((WLConnection)logicalCon).getVendorConnection();
</div>
<div>
//Calling the procedure
</div>
<div>
//java.util.Map childMap1 = JDBCcon.getTypeMap();
</div>
<div>
java.util.Map childMap1 = <b>vendorConn</b>.getTypeMap();
</div>
<div>
childMap1.put("SST_ROUTE_ENTRY", Class.forName("svm.stport.ejb.StaticRouteEntry"));
</div>
<div>
//JDBCcon.setTypeMap(childMap1);
<b>vendorConn</b>.setTypeMap(childMap1);
</div>
<div>
// Create an oracle.sql.ARRAY object to hold the values
</div>
<div>
/*oracle.sql.ArrayDescriptor arrayDesc1 = oracle.sql.ArrayDescriptor.createDescriptor("SST_ROUTE_ENTRY_ARR", JDBCcon); */
</div>
<div>
oracle.sql.ArrayDescriptor arrayDesc1 =
oracle.sql.ArrayDescriptor.createDescriptor("SST_ROUTE_ENTRY_ARR", <b>vendorConn</b>); // here if i use the JDBCcon it works perfectly.... <u>^%^%^%</u>
</div>
<div>
code to fill in the sst route entry array....
.....arrayValues1 */
</div>
<div>
/* oracle.sql.ARRAY array1 = new oracle.sql.ARRAY(arrayDesc1, JDBCcon, arrayValues1); */
</div>
<div>
oracle.sql.ARRAY array1 = new oracle.sql.ARRAY(arrayDesc1, <b>vendorConn</b>, arrayValues1);
</div>
<div>
callStatement = logicalCon.prepareCall( "? = call procName(?, ?, ?)");
</div>
<div>
/* ..code to set the ?s ie array1 */
</div>
<div>
callStatement.execute();
</div>
<div>
}catch(Exceptio e){
</div>
<div>
}</div>
<div>
finally </div>
</div>{</div>
<div>System.out.println(" I ve come to finally"); </div>
<div>}</div>
<div>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~code snippet ends here ~~~~~~~~~~~~~~``
</div>
I have observed that the control immediately comes to the finally block after the call to the createDescriptor line above with <u>^%^%^%</u> in the comment. If i use the JDBCCon in this line...it works perfectly fine.
Any pointers to where anything is getting wrong.
I have jst set the vendorCon to null in the end of the file and not closed it. Subsequently i have closed the logicalCon. This has been mentioned in some of the thread in this forum also.
Thanks,
-jw

How to split the blob byte array and insert in oracle

how to split the blob byte array and insert in oracle
I am having a string which is of more than lenght 4000 so i am using BLOB datatype as input to get the string.
need to split the blob in oracle and store in the different column
The string is of bytearray i need to strore it in each column based on the byte array.

this will be my input i need to split the above and store it in different columns in a table.
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Hi,
I have a very large array that I need to create and later write to a TDMS file. The array has 45 million entries, or 4.5x10^7 data points. These data points are of double format. The array is created by using a square pulse waveform generator and user-defined specifications of the delay, wait time, voltages, etc.
I'm not sure how to optimize the code so it doesn't take forever. It currently takes at least 40 minutes, and I'm still running it, to create and write this array. I know there needs to be a better way, as the array is large and consumes a lot of memory but it's not absurdly large. The computer I'm running this on is running Windows Vista 32-bit, and has 4GB RAM and an Intel Core 2 CPU @ 1.8Mhz.
I've read the "Managing Large Data Sets in LabVIEW" article (http://zone.ni.com/devzone/cda/tut/p/id/3625), but I'm unsure how to apply the principles here. I believe the problem lies in making too many copies of the array, as creating and writing 1x10^6 values takes < 10 seconds, but writing 4x10^6 values, which should theoretically take < 40 seconds, takes minutes.
Is there a way to work with a reference of an array instead of a copy of an array?
Attached is my current VI, Generate_Square_Pulse_With_TDMS_Stream.VI and it's two dependencies, although I doubt they are bottlenecking the program.
Any advice will be very much appreciated.
Thanks
Attachments:
Generate_Square_Pulse_With_TDMS_Stream.vi ‏13 KB
Square_Pulse.vi ‏13 KB
Write_TDMS_File.vi ‏27 KB

Thanks Ravens Fan, using replace array subset and initializing the array beforehand sped up the process immensely. I can now generate an array of 45,000,000 doubles in about one second.
However, when I try to write all of that out to TDMS at the end LV runs out of memory and crashes. Is it possible to write out the data in blocks and make sure memory is freed up before writing out the next block? I can use a simple loop to write out the blocks, but I'm unsure how to verify that memory has been cleared before proceeding. Furthermore, is there a way to ensure that memory and all resources are freed up at the end of the waveform generation VI?
Attached is my new VI, and a refined TDMS write VI (I just disabled the file viewer at the end). Sorry that it's a tad bit messy at the moment, but most of that mess comes from doing some arithmetic to determine which indices to replace array subsets with. I currently have the TDMS write disabled.
Just to clarify the above, I understand how to write out the data in blocks; my question is: how do I ensure that memory is freed up between subsequent writes, and how do I ensure that memory is freed up after execution of the VI?
@Jeff: I'm generating the waveform here, not reading it. I guess I'm not generating a "waveform" but rather a set of doubles. However, converting that into an actual waveform can come later.
Thanks for the replies!
Attachments:
Generate_Square_Pulse_With_TDMS_Stream.vi ‏14 KB
Write_TDMS_File.vi ‏27 KB

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Thanks!

Array of variable-length lists in Action Engine

I'm starting work on a application that consists of multiple sub-panels which each present a specific subset of the hardware functionality. The hardware appears to the host mostly as memory-mapped registers. I'm considering implementing the hardware interface in an Action Engine (AE) so that LV will automatically arbitrate among the hardware access requests from the sub-panels and because it (seems to me) to make the data flow more clear than the current implementation that uses a veritable plethora of queues, notifiers, and rendezvous to send requests and results between the sub-panels and the hardware interface at the top-level.
The challenge is this, though: Certain hardware addresses need to be modeled in multiple sub-panels -- maybe data at a certain address changes the functionality of some other addresses, or maybe different bit-fields within an address are part of different functional groups.
So any of sub-panel can request a read or write to the hardware, but often several of them need to see the resulting data.
In order to keep the design modular and expandable I don't want to hard-code anything in the hardware AE that is specific to the sub-panels. Instead, I intend to have the sub-panels "register" with the hardware AE indicating for which addresses they need to receive updates when some hardware address is read or written to. This means the AE will have to keep the "registration" data in an un-initialized shift-register (USR). But I want the hardware accesses to run as fast as possible, so I would like to ask for some suggestions how to implement this as efficiently as possible (avoiding, for example, clusters of arrays...)
I imagine the sub-panel registration info might consist of a user-defined event reference (created inside the sub-panel VI) and a list of hardware addresses that the sub-panel is modeling. Then when the hardware AE gets a request to read or write at some address it will also generate events to broadcast the data to the sub-panels that have registered for that address. This will probably include 20-25 subpanels registering for a collective total of about 700 hardware addresses.
I'm less concerned about memory than speed.
So, a few possibilities come to mind for how to implement the registration data in the AE USR:
A) Have one 2-D array where the array contains one row per hardware address (~320), and columns contain the event refs for all the sub-panels registered for that address. The width of the array would depend on whichever address has the greatest number of sub-panels registered for it (maybe 4-5?), but that still means the array would be pretty large (about 6.5 kbytes if a reference is a 32-bit value?)
On the other hand, indexing into this array to look up the sub-panel references for the current address would be relatively quick and easy since the hardware address is the row number.
B) Have two arrays where the array size is the number of sub-panels: One 1D array for the registered event refs and one 2-D array for the addresses. But different sub-panels will have different quantity of addresses registered, so that means the "width" of the address array would be as big as the largest number of addresses registered by one sub-panel (maybe 20?). This would use a total of only about 1.5 kbytes, but I would have to search through all 25 address arrays to see if the current address is registered.
C) or, some other way that I have not though of.
Once the "registration" data is received from the sub-panels during program initialization it is never changed, only read. So at first glance it would seem (A) would be the faster implementation. But I don't know what, if any, performance hit there would be from having such a large array in a USR, which is why I'm asking here.
Any thoughts or suggestions would be greatly appreciated.
Thank you and Best Regards,
-- J.

JeffBuckles wrote:
Any thoughts or suggestions would be greatly appreciated.
Thank you and Best Regards,
-- J.
Quick thought (hardly!)...
I have used a "Self-Addressed Stamped Envelope" architectrure for those type os apps.
DAQ device has a queue it monitors for subscription requests (Think of a in-box for Marketing deparetment).
When client is created it submits a request via the queue for the subscription request that included a ref to its update queue and a list of teh channels it wants to watch. The clients then wait for updates.
The Marketing department pass the request for updates (in-box of marketing department) to the production department (I used an AE to pass the mailing list) who picks through the acquired data and passes updates as requested to all of teh subscribing clients.
Just sharing ideas,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

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