Hi all,

We're creating a series of RESTful APIs that output data from a Cache database (made up of global storage that we've mapped to classes). I'm running into some problems with object-to-JSON conversions when relationships are involved. Eg:

ParentClass has children relationship to ChildClass

ChildClass has parent relationship to ParentClass

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I need to do an UPDATE via SQL and I would like the statement to return the `ID` column of each row that is updated. MS SQL has an "OUTPUT" statement, but I don't see anything similar in Cache. Is there a way to do this?

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Question
· Aug 18, 2016
Read only Async mirror setup

I have setup an async reporting mirror member with Read only access. My problem is that if I try to do any sql reporting against that data I am getting errors. I am sure that this is because the DB is read only, but I had assumed that setting up a reporting mirror would handle this.

I there a setting or mapping I am missing?

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Do you have any experience / recommendations / best practice on how to update server-side data residing in a Cache database via a REST service?

A naïve approach would be to send a full JSON representation of the data object via an http POST to a method on a REST handler class:

<Route Url="/mydata/:id" Method="POST" Call="Update"/>

The problem I see here is, if only one of the data object's properties has changed, how do we know which? Or do we simply overwrite all properties?

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Question
· Sep 19, 2016
REST json payload

Hi-

This almost seems like a silly question, but I am new to REST services.

I have a rest service that has a method for adding records to my database.

<Route Url="/userdetails" Method="POST" Call="SaveUserDetails"/>

My REST client sends data using json in the body of the request. I have verified using debugging tools that the data is actually being sent.

On the server side in my SaveUserDetails method where do I find the json?

What is the proper way to serialize that json into an object?

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I have been using the query below and it was working fine but now it's giving a SQL error. There were no changes made that could cause this to stop working. There is no Field 'APPLICATIONID' in the table.

QueueSQL=select distinct (convert(char(5),SkillsetID)+'='+Skillset) from iagentbySkillsetStat where ApplicationID > 10000
QueueMappingSQL=SELECT DISTINCT (convert(char(5),SkillsetID)+'='+Skillset), SkillsetID FROM iagentbySkillsetStat iagentbySkillsetStat WHERE (iagentbySkillsetStat.ApplicationID>10000)

DB- Intersystems Cache

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Let's say I have a global named ^a and I need to export its nodes 1, 2, 3, 5 only.

Currently I write something like this:

Write $SYSTEM.OBJ.Export("a(1).gbl,a(2).gbl,a(3).gbl,a(5).gbl", "C:\Users\eduard\Desktop\a.xml")

Is there a way to write it shorter? I want to write global node once and list all the subscripts I need.

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Question
· Sep 15, 2016
Help

Hi All,Cache is not starting ,I checked the cconsole log it is showing the below error.
The following parameters are missing from section [Journal]: '2,12' at line 143,but i checked in last cpf file,
In cpf file consist of that particular line
[Journal]
AlternateDirectory=C:\InterSystems\CACHE16\mgr\journal\
BackupsBeforePurge=2
CurrentDirectory=C:\InterSystems\CACHE16\mgr\journal\
DaysBeforePurge=2
FileSizeLimit=1024
FreezeOnError=0
JournalFilePrefix=
JournalcspSession=0

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Question
· Sep 7, 2016
Cache Certification

Caché Application Developer certification:

How to I prepare developer certification of cache .What are the topics are preparing certification . Please give the topics .I will start learning of certification course .

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Hi all,

Do anyone know how to force to close the CSP connection used before redirecting to a different page so a new connection ( and therefore a new session id) is generated?

The idea is to generate new CSP session once we log off our application so the session identifiers are different.

Best Regards

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