#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
· Jun 2, 2017
Decoding Base64 PDF File

Hello, I am writing some cache code that will pick up a PDF file, Base64 encode the contents and then send on to a third party system within a Long String (via their API). I have been testing this and discovered that the PDFs do not open within the supplier system (I get an error saying that it hasn't been decoded correctly). I wanted to prove that the issue does not lie with the way that I have Base64 encoded it within Ensemble, and therefore as a test wanted to Encode the PDF stream, then decode the stream and write out to a new file.

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I have a process that I am trying to duplicate from SQL Integration Services (SSIS) into Ensemble so that the rest of my team can help support any issues that may happen.

This particular job creates multiple dictionary files, but for each one of the dictionary files it creates, it also creates a control file that tells the vendor what to process.

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I have a business process.

if it has an error it dies, or if a have a catch all/fault handler the execution flow goes there.

However, I want another behavior.

If any error occurs I want the process to "Pause" (and alert me), so I can figure out what went wrong and resume from the last request.

Here's an example of how it could work:

  1. If an error is caught, call BO
  2. BO defers response
  3. BO sends alert
  4. Fix BP
  5. Manually resolve deferred response

I'm not set on the exact pause/resume mechanic but I hope it makes the general idea of what I want clear enough. Ideas?

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I am working on a BPL to take data from a MS SQL database and create an HL7 Materials Message for our EMR. I have done this plenty of times in the past however I am running into an error.

"Remote Gateway Error: JDBC Gateway SP execute(0) error 0: Access to the remote server is denied because no login-mapping exists."

What is confusing is that this BPL doesn't differ from any of my other BPLs in connecting to MS SQL Server. I know I am missing something..

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I am using the EnsLib.File.PassthroughService class in the business service, this business service will accept a text file from a location and pass it through to the BPL as a stream. I have been trying to work with the BPL in the GUI and I have been reading the documentation and trying to get it to work but I can not I continue to get errors and I am not sure why.

I will attach the Photos of what I have been trying, I think there is a problem with my call action because when I try and trace the message the context of the file does not even make it to the business operation.

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How do we trigger a BPL Business Process on a time schedule?

We are building a production that takes a steady stream of (HL7) lab results messages, processes them and stores them in a temporary database table. At scheduled points during the day (eg 0800, 1300, 1600) the database is queried and messages sent on to the downstream system. Aiming that the Processes to be implemented in BPL if possible - but we are having trouble triggering code in a BPL as a scheduled job.

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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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I am creating a BPL using the Management Portal instead of creating a custom class.

As per the documentations 'request object' contains properties those were in the original request message object or primary request and can be reference using the dot syntax.

So if the primary request was an HL7 message, i should be able to pull the value MSH:9.2 as follow

request.{MSH:9.2} and assign it to a context property

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I am trying to transform an Enlib.EDI.XML.Document through aXLT I know how to trans form the xml document through a xlt stylesheet but been trying to get an Enlib.EDI.XML. Document from a procees by creating aoperation that will do the transformation of this to file if this can be done in a process all ideas welcome so far I have come to this and I keep getting an error

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Question
· Jul 20, 2018
Oracle Transaction

Hi,

I have a question related with EnsLib.SQL.OutboundAdapter adapter.

Is there a way to open an oracle transaction and do either commit or rollback depending on the query result?

Is posible to keep open an oracle transaction to execute a lot of queries on different methods on the same business operation and do a commit when the business process finished?

Thanks and Best Regards

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Question
· Mar 20, 2019
Query Response from MSSQL

I am having an intermittent issue that when I make a call to MSSQL from a BPL that the response does not come back in the amount of time required. Since the call from the BPL is synchronous I tried changing the timeout to 60 but it has not helped (see below). Is there anyway to guarantee that the call waits long enough for a response before continuing on?

Thanks

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Question
· 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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Hi there,

I'm working on a project where I retrieve RawHL7 message(ORU R01 2.3.1) content from a database in a BPL. I've created a context object of type Enslib.HL7.Message, and I need to populate it with the contents from the RawHL7 message so that I can use this context object as source for my DTL transformation.

Does anyone have suggestions on the best approach to achieve this? I'm looking for guidance on how to efficiently transfer the data from the RawHL7 message to the context object.

Thanks in advance for your help!

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Hi all,

We're in the process of creating several courses for creating custom business components for productions. This includes custom business operations, BPL processes, and custom business services. Custom Business Operations and Custom Business Services are both aimed at software developers while BPL processes can be also be created by business analysts. What are some gotchas or best practices you've learned that you wish you knew when first building these components?

We'd love to include what you've learned into these courses so others can learn from them as well!

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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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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 message class define. But sometimes the RelatedItems fields is not returned.

Parameter %JSONIGNOREINVALIDFIELD As BOOLEAN = 1;

Property RequestedTerm As AH.AHLIB.Custom.Symedical.Message.PostRelationResponse.termsRequested;

Property RelatedItems As list Of AH.AHLIB.Custom.Symedical.Message.PostRelationResponse.RelatedItems;

Respnse normally will return someting like this,

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Hello,

I want to process more requests per second in Ensemble 2015 (soap service). My problem is in a business process that makes a great transformation. I thought that I can put its group size to 4 (the current value is 1), or put 4 business processes and apply, for example, the round-robin algorithm.
Which alternative is better?

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Hi everyone

I am new to the bpl diagram. I would like to add an if statement that checks whatever an object is null or not.

I guess that: condition='response.Content != null' would not be ok...

<if name='CheckObj' condition='response.Content != null' xpos='200' ypos='1700' xend='277' yend='2197' >

I tried to search for this information in the documentation but I didn't find any help.

Do you have any suggestions?

Thanks and best regards

Milena

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In a Business Process (BPL) I noticed that if I 'm using a "scope" to handle errors then inside the "scope" when a "call" is used, the "request" and "response" action (i.e set for callrequest.prop = request.prop & response.prop = callrespones.prop does NOT work !
The result is that the values of those properties in the callrequest are nulls (I do see the properties names in the content of the callrequest message)

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Question
· 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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