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#Business Process (BPL)

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InterSystems Ensemble Business Process Language (BPL) is a language used to describe executable business processes within a standard XML document.

Documentation.

Question
Larry Pinsky · Feb 6, 2020
Opening Files Within A BPL

I have two files that I ultimately need to combine. The first file contains data from a PO. The second file contains tracking information. What I thought about doing was create a BS that grabs the first file, loads it into a record map and transfers it to a BPL. Then, the BPL would open the second file where I would write code to load the file into a second record map and then insert the tracking information to the correct places in the first file based on PO line items.

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I have a case where I need to look up the NPI provider against an External MS SQL database to retrieve our Provider Identifier to send to a downstream system. In the past I would use a Business Process (BPL) to connect to the outside MS SQL via JDBC and get that information for me. But I was thinking instead of creating a BPL process to do this, would it be better just to link to the outside MS SQL database table to retrieve the information in a SQL statement within a DTL?

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Question
John Flippance · Mar 29, 2017
Count Number of Pages?

Hello,

We are working on creating a metadata file to accompany PDF documents produced by one of our third party systems for ingestion into our DMS. One of the pieces of data that the metadata file must contain is the number of pages of the PDF document.

In Cache ObjectScript does anybody know if there is currently a way of counting the number of pages within a file (specifically a PDF) without invoking a non-Caché ObjectScript program/function from within Caché ObjectScript?

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Question
Jack Mears · Nov 26, 2018
BPL - Foreach IF statement

As part of a BPL I am building I need to foreach over a some repeating elements and look for a certain value, if said value is present I need to forward the message to another operation.

I can't seem to get the if statement inside the foreach loop to work and I think I am doing something wrong?

The error message I am getting:

ERROR <Ens>ErrException: <UNDEFINED>zS2+2^GWH.Messages.Eobs.AKISegmentCheck.Thread1.1 *k1 -- logged as '-' number - @' Set k1=request.GetNextIndex("PIDgrpgrp("_(1)_").ORCgrp()",k1,.tSCTrans)'

Can anyone explain that error to me?

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Folks

1) What's the correct way to check for an existence of a segment? So far I have been doing this by checking to see if a required field is non-null, and this seems to work but is a bit clumsy. In this case, it’s an X12 message being checked in an IF action in BPL:

request.GetValueAt("NTE(1):Description")'=""

Or in a DTL, to see if a Z segment exists:

source.{ZEF:Counter}=1

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Hello,

We are developing a BP where we would need to call at the same time to get appointments in two external systems. So then, we would need two threads, one for primary care appointments, and other for specialist appointments . We need to paralelize both calls because of both of them require some time and we would need to shorten it as much as possible.

We are currently using a flow:

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What are the pros and cons of developing a custom database driven routing engine vs. using the Ensemble standard routing engine. What I'm trying to accomplish with the custom routing engine is less manual intervention every time a new route is added. The con I can see with the custom engine is performance may lag behind the standard engine. My development vs. Intersystems essentially.

I appreciate feedback. Thanks!

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Is it possible to dynamically adjust the RetryInterval andFailureTimeout settings in a BPL?

I've got a business process that calls a web service operation to get a session ID from an external system. There is a string property returned in the body of the response that indicate an exception occurred in the external system. I have code in the BPL that examines the property and sets the status property to an error status when that occurs.

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Hello All,

I am exploring Ens.Alert to generate alerts for Server exceptions.

I noticed that in the business operation, if you have your code inside try/catch and if your catch doesn't explicitly invoke $$$systemerror then Ens.Alert is not invoked.

Similarly, in the Business process if you have <catchall> then Ens.Alert is not invoked on error. How can I invoke Ens.Alert from <catchall> ?

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I am trying to use EnsLib.SQL.Operation.GenericOperation for retrieving (multiple) rows. But I am looking for a way to handing a StreamContainer returned by the operation, in my business process such as receiving it in the Context object and packing it to a request to call another business operation.

Does anyone have sample code to do this?

Thanks.

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Hello,

We would need to know the Ens.Response SourceConfigName to identify which Operation has raised an exception.

We have tried:

$$$LOGINFO("..%Process.%PrimaryResponseHeader.SourceConfigName..: "_..%Process.%PrimaryResponseHeader.SourceConfigName) //It outputs an empty string
 
$$$LOGINFO("response.SourceConfigName: "_response.SourceConfigName) //It generates an exception

We would need to get from an Ens.Response which body is null, its SourceConfigName:

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Hi,

After cloning "http://github.com/intersystems/Samples-Integration-RedLights" sample code I imported sample production from /home/project/Samples-Integration-RedLights/data/EndStateProduction.xml file to my local system.

Now I am getting the error "ERROR #5021: Directory '\home\project\shared\Samples-Integration-RedLights\data\SampleFiles\' does not exist." in my service.

While modifying the Directory path I am getting below error :

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I have a production that takes in an HL7 message thru a business service. The business service passes the incoming HL7 message to a business process that calls a transform to transform the HL7 message to a message class. After the transform is finished, the business process uses a code block to pass the object created by the transform to a method class that processes the data in the object. What would be the correct syntax for passing in the object to the class method?

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I have a handful of EnsLib.HL7.MessageRouter sending an HL7 message to a single Business Process (Ens.BusinessProcess).

In the OnRequest method, I am declaring pRequest as EnsLib.HL7.Message

What I need to do is determine which HL7 Router sent any given request to my BusinessProcess.

To do this, I know that I need to fetch the SourceConfigName property from the Ens.MessageHeader of the Request, but I am not sure how (or if) I can fetch this data from within the OnRequest Method.

Does anyone have any pointers?

Bill Casey

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I'm looking at an issue where I need to grab an ID number from an external SQL table when it doesn't exist in a HL7 message, and then add it to the HL7 message.

I have built the logic within a BPL which checks for the lack of ID, and then pulls the ID from the SQL table (and storing its value using the context functionality within the BPL) however I am at a loss as to how I then take the ID and add it to the HL7 message before passing it to a router.

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I created a custom class for a process that does some basic manipulation to an HL7 message. I'd like to be able to write some debugging to the process event log. How would I do that?

I've tried ##class(Ens.Util.Trace).WriteTrace("system","HOSP.IHE.PDQProcess","MessageHeaderHandler","Discarding input message")

but I get a runtime error when I try that. I know this is pretty basic stuff, but any help would be appreciated.

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Question
Larry Pinsky · Feb 28, 2020
SQLCODE Error -400

I have a code block in a BPL. I have the below SQL and code. All variables have been declared and set. When I run the SQL, if there are no values returned, I get 100 for the value of SQLCODE when I perform the FETCH, which is correct. If values are returned, I get a -400 error when I perform the first FETCH. I've investigated, but cannot find the reason for a -400 error. Hoping someone out here understands this and knows what's wrong.

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There has been some confusion about how to edit Business Process Language (BPL) and Data Transformation Language (DTL) files in Atelier using the graphical editor. The following steps describe how to do this with Atelier version 1.0:

Copy the file you want to edit from the server to an Ensemble-enabled project in your Atelier workspace. To do this, find the file in the Server Explorer, right click and select Copy to project.

Open the file in the Atelier class editor just as you would any other class file.

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I have a batch record mapper that reads a csv file and passes the message to a process that uses the EnsLib.MsgRouter.RoutingEngine and would like to pass the message to an operation that will output that as a XML file but so far been unlucky as the operation that I use , uses the EnsLib.EDI.XML.Operation.FileOperation which only works with the messages("BusinessOperation class for writing XML messages to a file.

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