Replies by Enrico Parisi for InterSystems Developer Community

Enrico Parisi · Mar 13

Hi Scott,

I don't consider 255 as larger than the typical string length and I'm surprised of your issue and I don't fully understand your code, probably because it's not complete (set tSC = rs.Insert(pInput) make no sense to me).

Anyway, my suggestion is to find some more info that may give you some hint.

For example I'd add the following lines in your OnProcessInput() method:

Set colId=pInput.GetColumnID("ExternalName")
$$$LOGINFO("ColumnType is "_pInput.GetColumnType(colId))
$$$LOGINFO("ColumnSQLType is "_pInput.GetColumnSQLType(colId))
$$$LOGINFO("ColumnSize is "_pInput.GetColumnSize(colId))

Please test this using a query that extract a few records to avoid flooding your event log.

I'm curious to see what you get.

Enrico Parisi · Mar 13

Can you please provide some more details on "columns that are larger than the typical string length"?

How long (max) can be?
What's the data type for these columns in the external database?
What database are you connecting to? Using ODBC or JDBC?

Enrico Parisi · Mar 11

InterSystems offers specific training course for Building and Managing HL7 integration periodically available in InterSystems offices, remote/online and on customer site.

To get detailed info and take advantage of what it's available in InterSystem Learning, click the Learning link on left top of this page.

There you can find plenty of material regarding HL7v2 and MUCH more.

An excellent starting point would be to start with what's freely available for self learning, with a quick search I found couple of Learning Path on HL7v2:

Building Basic HL7 V2 Integrations with InterSystems

Building Advanced HL7 V2 Integrations with InterSystems

In addition to these Learning Paths there are additional more specific resources for specific topics.

In the Developer Community there are many HL7v2 articles you can learn from and maybe browsing HL7v2 related questions and provided answers can help learning.

Last but not least, in Open Exchange (fourth link on top of this page) also contains many HL7v2 projects you can learn from.

Regarding certification, please check InterSystems Certification Program, link on top of this page.

Enjoy learning! 😊

Enrico Parisi · Mar 10

Be careful, in some cases that method does not work correctly.

I was testing this using a class where the package redefine the SQL schema name for the classes, in that case the ClassNameToTableName() returns a wrong result.

Enrico Parisi · Mar 10

I know this is an old question, but in case someone will search for the same question, another option (better, IMHO) is to use:

$$$ClassSQLTable("my.ClassName")

In case you need it for current class:

$$$ClassSQLTable($classname())

To use the $$$ClassSQLTable macro your class needs:

Include Ensemble

Enrico Parisi · Mar 6

I'm afraid that the query you suggest does not returns the same result.

It returns one row per session, each with the number of messages for the session.

Enrico Parisi · Mar 5

Well...if fact, a better query would be:

select count(DISTINCT SessionId)
from Ens.MessageHeader
where TimeCreated between '2025-02-01 00:00:00' and '2025-02-28 23:59:59'

Note: while the query is different, it ends running pretty much the same code as the previous query, but I like this better 😊

Enrico Parisi · Mar 4

select count(*) from (
select SessionId
from Ens.MessageHeader
where TimeCreated between '2025-02-01 00:00:00' and '2025-02-28 23:59:59'
group by SessionId
)

Enrico Parisi · Mar 4

Ciao Riccardo,

<PROTECT> error, evidently the caller or the web application does not have enough permission.

Is the caller being authenticated? How? What user? What roles has the user?

Check the associated Web Application authentication and the user used by the caller to connect to your (FHIR) Web Application.

Enrico Parisi · Mar 4

Can you please define "Unique/distinct message counts"?

Enrico Parisi · Feb 28

Hi @Muhammad Waseem , nice and useful article.

Please note that for embedded SQL, since some version 2020.1, when the Universal Query Cache was introduced, it's no longer true that "SQL statements are pre-compiled into the program during development", please check relevant documentation.

You can find more details and a discussion of this topic, including comments from @Dan Pasco, the initial dynamic SQL developer, in the post A look at Dynamic SQL and Embedded SQL

Enrico Parisi · Feb 28

You can enable the log in the .NET Gateway and see if the log give you some useful info.

As in my previous post, my guess is that you are passing the wrong/incomplete class name as 1st parameter of new().

Enrico Parisi · Feb 28

Are you sure you are using the correct/full name reference to your parametisedClass?

It should be NamespaceName.PublicClassName

Enrico Parisi · Feb 28

I'm not familiar with Spring Boot, so I don't understand what you want to implement in IRIS.

Do you want to define a custom datatype?

What kind of behavior you need to implement in IRIS?

Enrico Parisi · Feb 28

Try with:

Set remoteObj=gateway.new("parametisedClass",theparameter)

For additional info, my suggestion is to look at samples-dynamicgateway-dotnet in GitHub.

Enrico Parisi · Feb 28

I'm not sure what you want to implement, note that ByRef and Output are keywords (not parameters) and are for documentation purpose only, the (dot) syntax used by the caller define if an argument is passed by reference, regardless of ByRef/Output keyword specified in the called method.

What kind of customization you need to implement?

Enrico Parisi · Feb 28

To get the XML rule definition from SQL you can write/define a stored procedure that returns the XML rule definition, then....parse the XML. Something like:

Class Community.Rule.XDATA
{
ClassMethod GetXML(RuleName As %String) As %String(MAXLEN="") [ SqlProc ]
{
    Set xdataOBJ = ##class(%Dictionary.XDataDefinition).IDKEYOpen(RuleName,"RuleDefinition")
    Quit xdataOBJ.Data.Read($$$MaxLocalLength)
}
}

Then from SQL:

select Community_Rule.XDATA_GetXML('Your.Rule.Name')

Enrico Parisi · Feb 28

I really doubt it's possible to search for Data Set values, that information is stored in a binary file in the filesystem, not in the database.

Enrico Parisi · Feb 25

You can use this query in your method:

select * from Ens.Job_Enumerate()
where ConfigName ='T_SPM_SIU'

Enrico Parisi · Feb 25

From documentation:

General Rules

Every identifier must be unique within its context (for example, no two classes in a given namespace can have the same full name).

Identifiers preserve case: you must exactly match the case of a name; at the same time, two classes cannot have names that differ only in case. For example, the identifiers id1 and ID1 are considered identical for purposes of uniqueness.

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