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#REST API

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Representational state transfer (REST) is a software architectural style that defines a set of constraints to be used for creating Web services. Web services that conform to the REST architectural style, called RESTful Web services (RWS), provide interoperability between computer systems on the Internet. RESTful Web services allow the requesting systems to access and manipulate textual representations of Web resources by using a uniform and predefined set of stateless operations. Other kinds of Web services, such as SOAP Web services, expose their own arbitrary sets of operations.

Learn More.

In this article, we will explore the development of an IRIS client for consuming RESTful API services that have been developed to the OData API standard.

We will be exploring a number of built-in IRIS libraries for making HTTP requests, reading and writing to JSON payloads, and seeing how we can use them in combination to build a generic client adaptor for OData. We will also explore the new JSON adapter for deserializing JSON into persistent objects.

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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
· Jul 31, 2017
Posting to a REST service

Hello,

I come from a programming background, but haven't touched ObjectScript before my current job, so please forgive my ignorance.

Within an Ensemble system, I need to post some information to a RESTful web service. I'm just trying to figure out how to create a method which takes a simple message and posts this off to a RESTful web service?

Thanks in advance for any help.

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Question
· May 23, 2016
REST and IO redirection

Problem: I have a REST broker, and if I hit a code block, which does IO redirection, the REST reply becomes broken in one of the following ways:

  • Binary output
  • No output
  • First 4096 characters of the reply are missing

Consider the following REST broker:

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I have a CSP REST web application where I'm using delegated authentication via basic authentication in the REST calls. When I do a call to the web app with correct user credentials, I get a CSPSESSIONID cookie back representing the CSP session, which has started for the user I'm logged in with.

And when I want to log out/end the CSP session with the "CacheLogout=end" query parameter, I get a 401 Unauthorized code back. But the csp session itself does get terminated, which means the logout call was successful.

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I am trying to return a stream soap response using web services I can call my web service supply it with a xml string which works fine . I then work on that XML and try to return a Stream but all works in the production when my service receives the stream after I get the error as if its trying to copy stream to a variable and I am confused as to where that operation happens.

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Hi,

I was looking at the ENSDEMO namespace in our Ensemble server. In the class Demo.REST.DirectoryOperation, there is a line that uses the macro $$$URLENCODE. I would like to know exactly what does this macro $$$URLENCODE() do. Specifically what value does it. Unfortunately, I can't find anything about this macro in the Ensemble Documentation.

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Hi All,

I am trying to get JSON data from a REST api. I am using my web browser to get the data by hitting the URL.

The data is receiving properly, but the JSON contains a few HTML tags.

These tags are not not receiving in the browser while hitting the url. Is there any way to overcome this issue ?

Thanks,

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Hello community,

I have a very simple REST API connection doing a POST of JSON messages via AZURE APIM.

It worked successfully for few weeks until a day ago when i started receiving a bad response as below.

<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW"><meta name="format-detection" content="telephone=no"><meta name="viewport" content="initial-scale=1.0"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><script type="text/javascript" src="/_Incapsula_Resource?......................................

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Hi All,

I hope someone can help me with the following, it's about the usage of the class EnsLib.HL7.Service.HTTPService.

Working situation right know.

In IIS we've got a site configured who is dealing with the client certificate, etc and redirect the full request to http://localhost/csp/healthshare/NAMEPSACE/EnsLib.HL7.Service.HTTPServic... and the web gateway redirects the request to Business Service 'EnsLib.HL7.Service.HTTPService.cls'.

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I am relatively new to ensemble, but I am trying to build a REST operation using the enslib.Rest.Operation but I can't seem to get it to work at all. I am completely at loss here because the errors I am receiving are very unclear. I have tried a few different variants using PostURL and SendFormDataArray but I got errors on all variants. Suggestions are welcome.

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Hi Community!

We are pleased to invite all the developers to the upcoming InterSystems Full Stack Contest Kick-off Webinar! The topic of this webinar is dedicated to the Full Stack Contest.

On this webinar, we’ll demo the IRIS Full Stack template and answer the questions on how to develop, build and deploy full stack applications in InterSystems IRIS.

Date & Time: Monday, September 21 — 11:00 AM EDT

Speakers:
🗣 @Evgeny Shvarov, InterSystems Developer Ecosystem Manager
🗣 @Raj Singh, InterSystems Product Manager - Developer Experience

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I am trying to call to a website that renders a xml structure as a response.if I put the url on the browser an xml rendered page is returned but if i call to this using the below code I get an object reference error which I am finding had to understand is there anyone who could help understand this error or point me in the right direction thanks.

Set tSC=$$$OK

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Hi Developers!

I stuck with one interesting problem.

For example, let's use this template repo. If you build this container A using docker-compose and then run the container it exposes REST-API which is available on:

localhost:52773/person/all

The question is how to make this REST-API accessible from another docker container B running on the same machine? E.g. with IRIS 2019.4 Community from this repo?

The problem is that for the second container localhost it's something which belongs to container B.

I think I need to set up a network between containers somehow. E.g. using docker-compose. But is there any simpler way?

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Hi,
Trying to work with REST protocol, using IIS 8, both client and server are Cache servers,
I have the following problem-
When I send a PUT command, I get the following error:
<HTML><HEAD><TITLE>Length Required</TITLE>
<META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD>
<BODY><h2>Length Required</h2>
<hr><p>HTTP Error 411. The request must be chunked or have a content length.</p>
</BODY></HTML>

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I have tried many methods from super classes of %CSP.REST but I can't find a method I can override that will run after the %response object is created so I can set a header that is common to each implementation method. It's one line of code in each method to set the header but it would like to make it super easy, simple and just have a method that runs on, before, after the implementation method to set this common header (we want to return the API version in each responses HTTP headers.

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