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#Caché

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

Documentation.

Hi,

I have a class with around 400k lines and 60 columns. Class storage is Cache SQL storage (Mapped from a global).

I want to create multiple indices on certain fields.

I am familiar with two approaches:

1. Create a new map (Index type) on a pointer global.

2. Create a bitmap index

Which approach is more recommended to be used in the case I described? If there are any other approaches, I will be happy to hear.

Thanks :)

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Question
· Oct 18, 2017
Rebuild class index

I have a class. In class there is an index. This index is for quick search on name property.

Class User
{

.....

Property Name as %String;

Index NameInd On Name;

.....

}

This class is mapped to some global ^GL(userId) = "Name*other data....****"

And there is also index global ^GLNameIndex(Name, userId) = ""

When I add new User entry through class, f. i.

S user = ##class(User).%New()
S user.Name = "Some name"
​D user.%Save()

calling method %Save() adding new entry to index automatically.

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Question
· Oct 17, 2017
How to wrap %SQLCODE into %Status

I have a method would return %Status,

this method would run some sql queries and if the execution of these queries fail, I would like to return asap.

So how could I wrap the %SQLCODE into a %Status variable?

Thank for your help.

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Hello,

I've been manipulating XML objects via Cache, but have had some difficulty understanding how to use the following method detailed within EnsLib.EDI.XML.Prop:

Method choiceGetCount(Output pCount, pDOMPath As %String, pRef As %String) As %Status

From what I've read when walking through the code for this method, it appears to count a listing of repeating XML elements. However, despite my attempts to search for examples or attempts to implement this function, I am unable to do so.

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I setup an account in Cache and when I try to sort the dictionary item in the file by using the command SORT DICT filename, where filename is the name of the file i.e. SORT DICT TEST, I get the following error CMQL: The DICT entry "FIELD.ASSOC_" is not defined

The LISTDICT works correctly. Any thoughts on how to correct this error?

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Hi World

I've a problem when in extract a float value from my database

the problem is that i get an interger instead of float.

my record is 2,56 but when i do a select , the request extract only 2

can you have a solution for it.

thank you

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Question
· Oct 14, 2017
ZenMethod in onunloadHandler

I want to call ZenMethod when page is closing. Is it possible?

I tried

ClientMethod onunloadHandler() [ Language = javascript ]
{
zenPage.SomeZenMethod();
}


Method SomeZenMethod() [ ZenMethod ]
{
// to do some work
}

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Question
· Oct 14, 2017
Multiple joins in a SQL query

HI,

I have a query like below but its syntax is not accepted by Cache.

I would like to perform a left join on two tables first and then make a inner for this result with another table.

Given the constraint that we only allow one SELECT in the query, it is possible to achieve this semantics ?

Thank for your help.

Select *
FROM ( sample . employee e
LEFT JOIN sample . company c
on c . id = e . id ) g
JOIN sample . vendor v
on v . %id = g . attr

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Hi Community,

There is any way that I can use Studio Source Control in Atelier, or adapt it to use?

We have a solution based on Studio Source Control, and I cannot make it works with Atelier, I can not even see the classes .

Thanks,

Andrei L. Nenevê

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I'm trying to write an installer manifest that can create a namespace, resources (%DB_namespace) and a role (with the resource, above), based on the namespace. So you could pass in "ABC", or "XYZ", and it would create the %DB_ABC resource and the ABC role with %DB_ABC:RW permissions; or it will create the %DB_XYZ resource and the XYZ role with %DB_XYZ:RW permissions, accordingly.

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Hi everyone,

I really like using dynamic objects and dynamic arrays, Usually ending up with an SQL query that returns a JSON object i throw into my application via REST and work out things from there.

Recently I noticed that I keep using dynamic objects as simple storage solutions like:

set settings.customerSelection = 1

instead of ending up with several variables flying around.

This certainly is way more inefficient than having simple variables but does it make a huge difference? Especially considering how much more organized the code appears?

Cheers

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Question
· Oct 10, 2017
Create Custom Table or View

Hi ,

I am newbie working on Cache .

I have a global ^BB("QA",QDJ,QTM+i) , i want to create a table or a view to access the data from this.

I am expert in creating tables & views on RDBS like Oracle, SQL server. But no idea on Cache.

Can someone guide me from scratch how to pull the data from the global.

I have installed Cache Studio on my machine.

Regards

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I have an xml file that I read into objects and I am trying to print that file back in nested xml anyone with idea on how that can be achieved or where I can read in order to achieve this, here is an example of what I am trying to do.

From this

<Root>
  <FamilyMembers>
  <familyName>
  </familyName>
  <Name>
  </Name>
  <Age>
  </Age>
  <Employment>
  </Employment>
  </FamilyMembers>
</Root>

To this

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I have an application that as part of the registration process is using reCaptcha to provide a captcha. The issue is that service is served from Google and is unavailable in certain countries, namely China. I've been researching this some and believe it's possible to proxy the requests to the Google CDN to avoid the Chinese firewall ban on Google URLs, however I'm not quite sure how to do this in CSP.


Does anyone have suggestions on how to solve this, either with a technical solution or an alternative service I can fall back to?
An example would be greatly appreciated.

0 4
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Question
· Oct 7, 2017
.xls format problem

When i tried to print .txt format,data will be coming without space between each row but when
I tried to print .xls format mean ,it gives gap of each row.what is the reason behind this?

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Hi All,

I need some clarification on web service (Soap Service). For each Soap request, system consuming 1 license and it is not releasing until CSP session timeout and extra grace period 5.10 minutes(310 seconds).
Due to this, at some time license consumption is full.
If i use with Login credential (i.e password authenticated web service), it consumes one license for 25 connections(request).
But i need to use it as anonymous user(Unauthenticated).
Please advice.

Thanks,
Sabarinathan M

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Question
· Oct 3, 2017
.NET Gateway vs. Java Gateway

Hello,

we have to implement some application logic using either Java or .NET. Which should we choose? Given that all other considerations are equal, which is in your experience better way performance-wise to interact with external components in Caché: .NET Gateway or Java Gateway?

Thanks.

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