#Caché

hi, new here, and new to cache and deepsee.

i've been trying to setup a copy of our production server so we can use it for testing/development.

i did a full backup. moved it to the new server. ran the DBREST command. got it to restore but seems like permissions get all messed up. and it just generates a bunch of errors.

is there an easier/better way of doing this?

Let's say I have a list structure:

set list = $lb("stri,ng", $c(0), 2)

I want to replace all $c(0) elements with empty elements, so my list would look like:

set list = $lb("stri,ng", , 2)

What's the fastest way to do that?

Hi community,

I would like to ask how to correctly enforce SSL on all "developer traffic" -- that is Management portal and Studio connections -- on a Caché instance.

Given large developer permissions, I would like to eliminate all plaintext credentials on the wire.

Currently, we compile our own httpd with SSL support for Management portal, but this breaks Add-Ins for us, in particular the SOAP wizard. So I guess this is not the "canonical way".

Thanks for any suggestions

Jiri

There are some classes in our code base that contain Methods only (no properties). I told my colleagues that converting them into the ClassMethods should improve performance as it would eliminate unnecessary OREF support at run-time. Some of them replied that it would be microseconds, so what is the reason to bother.

Is it possible to estimate the impact of OREF support of method calls at run-time? E.g., as a % of all CPU load.

I come from Visual Studio and now I use mostly Cache 2017 Studio. One debugging functionality I miss dearly is current local variables automatically appearing in the Watch Variables window together with their values. Yes, I can hover or type them myself but both actions take extra time which is especially noticeable when debugging unfamiliar code across many routines. Any Cache settings or plugins to that effect? If not then why not? And if nothing else is there in Cache, what are the alternatives or hacks in this respect?

Anna

This might be more of a math problem than a Caché question.
I have a SQL query that joins two tables. I want to assign a unique ID to each row of the product table.

I am trying to create an ODBC class that includes all of these as records, but I don't see how I can since the first record has 3 subscripts, the rest have 4 subscripts:

Here is my current storage definition:

++ Update: August 1, 2018

The use of the InterSystems Virtual IP (VIP) address built-in to Caché database mirroring has certain limitations. In particular, it can only be used when mirror members reside the same network subnet. When multiple data centers are used, network subnets are not often “stretched” beyond the physical data center due to added network complexity (more detailed discussion here). For similar reasons, Virtual IP is often not usable when the database is hosted in the cloud.

Network traffic management appliances such as load balancers (physical or virtual) can be used to achieve the same level of transparency, presenting a single address to the client applications or devices. The network traffic manager automatically redirects clients to the current mirror primary’s real IP address. The automation is intended to meet the needs of both HA failover and DR promotion following a disaster.

Hi Community!

Suppose I have a property in a ObjectScript class:

Property values As list Of %String

What an SQL query can help to return the values of the property as JSON array via SQL access (JDBC)?

In a tag-based CSP page, I can define (e.g.):

<script method="Foo" language="cache" runat="server">

If I have defined a class query in one of my classes and I want to use that query from a method of another class, what are the pros and cons of using the %SQL.Statement interface versus the %Library.ResultSet interface?

I believe %SQL.Statement is the newer interface.

So if the old way is:

USER>s rs=##class(%Library.ResultSet).%New("%Library.File:FileSet")
 
USER>s sc=rs.Execute("c:\s\","*.txt")
 
USER>w sc
1
USER>while rs.%Next() {w !,rs.Data("Name")}

...

then the new way is:

Hi Folks,

I created a persistent class as below

Class myclass.DataBase Extends %Persistent
{

Property ID As %String;

Property Skill As list Of myclass.SerialTablelist;
}

and Created another Serial class as

Class myclass.SerialTablelist Extends %SerialObject
{

Property PSkill As %String;

Property OSkill As %String;
}

Now I will save the id as below

do rs.Prepare("Insert into myclass.DataBase(ID)VALUES(?)")
do rs.Execute(ID)

Hi ,

I have a code written in cache sql and trying to understand it, below is the code , can anyone help me understand what does that mean

ex - !! dosage_unit !!

SELECT (CASE WHEN (order_description IS NULL OR (order_description='')) THEN '' ELSE (order_description) END) !! (CASE WHEN (dosage IS NULL OR dosage_unit IS NULL OR (dosage='') OR (dosage_unit='')) THEN '' ELSE (', ' !! dosage !! ' ' !! dosage_unit !!

Thank You in advance.

Hi-

I am running the latest version of Cache and am trying to use the Config.* classes in the %SYS namespace to be able to gather information from a cache.cpf file that was provided to me by a customer. The customer is running an older version of Cache which had a different Version number in the cpf file. Theirs is 2013.1 and mine is 2015.1.

My question is, are the Config.* classes backwards compatible. Can I use a 2017.1 version of Cache to read information from cpf file from a 2014 system?