Hi Community,

The new video from Global Summit 2019 is already on InterSystems Developers YouTube:

⏯ Basics and Benefits of Cloud Deployment

https://www.youtube.com/embed/GRFW85xA98Q
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What is %SQLRESTRICT

%SQLRESTRICT is a special %FILTER clause for use in MDX queries in InterSystems IRIS Business Intelligence. Since this function begins with %, it means this is a special MDX extension created by InterSystems. It allows users to insert an SQL statement that will be used to restrict the returned records in the MDX Result Set. This SQL statement must return a set of Source Record IDs to limit the results by. Please see the documentation for more information.

Why is this useful?

This is useful because there are often times users want to restrict the results in their MDX Result Set based on information that is not in their cubes. It may be the case that this information may not make sense to be in the cube. Other times this can be useful when there is a large set of values you want to restrict. As mentioned before, this is not a standard MDX function, it was created by InterSystems to handle cases were queries were not performing well or cases that were not easily solved by existing functions.

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Ease into the new year with the latest content from InterSystems Learning Services! Get info on:

  • How to get hands-on with Docker containers and InterSystems IRIS®
  • Designing healthcare productions with InterSystems IRIS for Health™
  • A new certification exam for InterSystems IRIS Core Solutions Developer Specialists
  • Improved UX with InterSystems documentation
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Hi Developers!

This is the digest of new solutions and applications submitted to InterSystems OpenExchange in December 2019!

New applications in December 2019

ObjectScript-Math

Math library for InterSystems ObjectScript

Author: @Peter Steiwer , OEX Profile

JSONExportManyToMany

Sample for %JSONExport against a class with Many to Many Relationship

Author: @Peter Steiwer , OEX Profile

InterSystems ObjectScript zpm-registry

Server-side hosting service for ObjectScript packages installable via ZPM client.

Author: @Evgeny Shvarov, OEX Profile

Publisher: InterSystems Corporation

SUDOKU

SUDOKU game written in InterSystems ObjectScript

Author: @Robert Cemper, OEX Profile

Portlet Samples

Sample DeepSee Portlets showing different ways to implement custom widgets

Author: @Peter Steiwer , OEX Profile

Advent of Code ObjectScript Docker Template

A simple template to craft Advent of Code with ObjectScript in InterSystems IRIS

Author: @Evgeny Shvarov, OEX Profile

Ingestion Speed Test
Shows how IRIS can ingest thousands or millions of records per second while allowing for queries on the same cluster. Works on a single IRIS instance or on an IRIS cluster on the cloud.

Author: @Amir Samary, OEX Profile

John Conway's Game of Life

With this class, you could simulate Game of Life world that John Conway invented in 1970. We can see how John Conway universe evolves in our terminal

Author: @Jose-Tomas Salvador, OEX Profile

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Question
· Dec 26, 2019
Performant index on date field

Is there a way to get a good performing index on a date field? I have tried various date property indexes and the query plan is always in a pretty high range. Below are query plan result values I have observed:

StartDate > '2019-12-01' --cost = 699168
StartDate = '2019-12-21' --cost 70666
StartDate between '2019-12-21' and '2019-21-28' --cost = 492058

The query plans above were for type %TimeStamp.

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Question
· Dec 26, 2019
File System

Hello All,

I am working on Files where I have to compare contents of two files and display result.
e.g Suppose file1 contains data in Name and Roll form and file2 contains data in name and class form, so it should compare name from file1 and file2 and display those matching data(Name,Roll,class).

I have piece of idea about file system so any help would be appreciated.
Thanks in advance.

Regards,
Gunwant

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Question
· Dec 24, 2019
JDBC connection issue

I am using the below code in my REST service and it throws the error "java.lang.NoClassDefFoundError: com/intersys/jdbc/CacheDataSource] with root cause
java.lang.ClassNotFoundException: com.intersys.jdbc.CacheDataSource
"

Surprisingly when i am using the same code in a static main method its running perfectly.

package webapps.services.datamgmt.webapps;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

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Hi,

I have written a procedure with the help of object scripting to export data to a csv file. There is more data than the csv limit.

Can anyone please tell me how to get the row count of csv file using object scripting, so that I can write an if condition and write to a second csv file.

Please find the code writing to the csv given below.

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Hi Team,

I want to save image/file using inter system iris web api.

I am sending file as Base64 formate in JSON object to api .and I want to save it at D/Images folder.

please refer below code that i was tried.

Obj.OrganizationLogoBase64--> has base64 value of image

Set decode = $System.Encryption.Base64Decode(Obj.OrganizationLogoBase64)

set file = ##class(%Stream.GlobalBinary).%New()

do file.Write(decode)

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Article
· Dec 31, 2019 3m read
Portlets that use data from DeepSee


In the previous part of this series, we saw how to reference a web page that will enhance our dashboard experience. Now we will look into referencing data that is already in our cubes.

In this example, we will be referencing the controller object and we will be extracting data from it. This data will then be displayed as text in our Dashboard. In Part 5, we will show how to incorporate this data into other charting libraries.

Open Exchange app
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I am trying to use the %ListOfDataTypes functionality, but am hitting a limit of 50 characters for each entry, when being used in a Web Service. Is there a way to increase the number of characters that can be used in the %ListOfDataTypes through a web service?

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Hi everyone,

I've encountered this annoying issue so many times before, if any one also encounter this issue, please share here if you have any solution.

So, I've been working on a web service project using HealthShare 2015. Sometimes I have to set a debug target to a csp file to debug it. If I pause the debug process about 3 minutes above or so (to examine an object, variable, etc..) the studio will hang.

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Hi,

The class %JSON.Adaptor is very convenient,

I wonder if anyone faced the following scenario using it-

Exporting an object, that has a many to many relationship, and getting the details of the related objects.

For example, if we have three classes - Teachers, Students, and an intermediate class TeacherStudent .

The classes extend %JSON.Adaptor, and we would like to open a Student object, use %JSONExport, and get a JSON

That includes the details of the student and all the teachers that teach the student, something like:

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Article
· Apr 12, 2017 5m read
Bug killing development tips

Does anyone NOT use a debugger? I can't remember the last time I did. It's not because I don't dislike them, I just don't need to use them. The main reason for this is because I have a certain development methodology that either produces less bugs, catches them at a unit test level, or makes tracking them down much easier.

Here are my tips...

1. Write your own COS cheat-sheet.

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