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#Caché

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InterSystems Caché is a multi-model DBMS and application server. See more details here.

Documentation.

Hello,

It is time for me to eat my own dog's food and start implementing unit test running with coverage :) I will be inundating IRC with questions at this point, but I have a more general question first.

In this tutorial, it is supposed that your unit tests are exported as XML first... But that's not very practical. Is there a way, instead, to run all tests from a given project without having this export?

My first thought on how to do this would be to:

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Hello,

Still related to the unit test with coverage support project, one goal is to make that package available to everyone.

One possible way I already know of is that all fully qualified class names (ie, the package + the class name) start with %, which mean that on installation all classes will end up in the %SYS namespace, but this requires that the install be done as a user with the necessary privileges to write to %SYS.

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Has anyone noticed that the Feature Map and Master Index was dropped from the 2016 version?

Anyone know why?

Please see the attached file of a screen shot.

Well, I have a screen shot file, but when I try to up load .docx, or .pdf, or html I am prevented, don't know why?

Yes, frustration!

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I have two servers in our TEST environment. One with HSBUS and one with HSREGISTRY. Let's call them "HSBUS01" and "HSDB01" respectively.

Now, I can access HSBUS with my SQL client by using the JDBC driver pointed to hsbus01.full.name.com and port 1972 and specifying a namespace of "HSBUS". I am, however, unable to access the HSREGISTRY instance via SQL with a similar combination of information.

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We have a query that looks something like:

select a, b, c, d, e, f

from tbla inner join tblb on tbla.....

This query runs in the expected 200-400 ms range.

If we run the same query but reduce the select to just:

select a

from tbla inner join tblb on tbla.....

then the query runs for 30 minutes or more.

The rest of the query is identical. Is there a logical explanation for how this can happen?

Thanks.

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I have to disect thousands upon thousands of strings like this:

96842-2-AEV.00001-63561-001958-100728760I-42

I've been able to pull out the first, second and final segments as separated by hyphens, but now I have a predicament where I need to use the second segment, the 2 shown in the example above, in a join to another table. Problem is Cache apparently doesn't like doing that. Just the same, I have to find a way.

Here's the code I'm using to pull that segment out into as separate field in the query results:

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Hi Community,

How can I create a JSON with the object ID by using the %Object:$toJSON API?

I have the following piece of code bellow where I create an object reference, create a %Object instance from %fromObject and them I am creating the JSON from $toJSON, but it does not expose the %ID (object id). How is the best approach to create a JSON with the respectives object IDs?

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Question
· Apr 21, 2016
iFind index missing data

I've been using iFind indices in one of my applications but this morning discovered that the index is missing data. I confirmed the issue also exists in our test environment and rebuilt the indices there. That seems to have fixed the immediate problem. However I'd like to understand how this came about to avoid it happening in the future.

Has anyone encountered this before and know the cause?

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Question
· Apr 19, 2016
SQL Sequence

Does Caché support SQL CREATE SEQUENCE as in PostgreSQL?

If not, what would be the best alternative? Create my own sequence logic as the example bellow?

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Question
· Apr 19, 2016
MessagePack support

MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small.

Any chance of adding support for MessagePack?

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Hello,

For CachéQuality I'd love to be able to create issues when the programmer uses classes which are deprecated for this or that version of Caché... But short of reading all the changelogs of all versions, I can't really tell when a command appeared (for instance RETURN; I know now that it appeared in 2014.x, but it took me some time to realize that), or when a (set of) class(es) became deprecated (for instance %GlobalCharacterStream to be replaced with %Stream.GlobalCharacter -- I don't even know since which version this is true :/).

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Question
· Apr 13, 2016
XMLExport and Validation

I interested on how others feel on this subject. In general terms when you have a class that extends from %XML.Adaptor and you call XMLExport no validation is automatically done as part of the XMLExport process. As an example if you do the following

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Hi all,

I've been looking for a way to extract the sorting from the ^CacheTemp.zenData global that contain the tablePane snapshot data in order to use it on a report following the current UI sorting criteria.

I could see that if the column is sorted by one column, new entries with this structure are created:

^CacheTemp.zenData(<sessionId>,<snapShotId>,<tablePaneId>,"index",<columnId>,<value>,<dataId>)=""

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Hi

I have been experimenting with the creation of a set of REST services for an app. The basic GET operation is set to create a %ZEN.proxyObject instance, and then set an instance of a Persistant class as a property, which gives me all of the values I want to return. However, it also gives me some values that I don't want to return over REST (because they are both private, and large registered objects which will bog down performance)

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Hello.

For debugging purposes I sometimes need to display stack information to the current device or save it (to a global for example).

There is this snippet offered in documentation:

ClassMethod StackToDisplay()
{
    For loop = 0:1:$Stack(-1) {
        Write !, "Context level:", loop, ?25, "Context type: ", $Stack(loop)
        Write !, ?5, "Current place: ", $Stack(loop, "PLACE")
        Write !, ?5, "Current source: ", $Stack(loop, "MCODE")
        Write !
    }
}

And to save stack to a global there's always an exception method:

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