Fire and forget messaging is a powerful concept. Asynchronous, decoupled communication is key to scalability and independence of services. Oracle Cloud provides a pub/sub solution called Oracle Messaging Cloud Service. This is an HTTP based publish and subscribe mechanism for asynchronous communication – based on persistent messages and durable subscriptions. […]
REST
Apache Camel + Spring Boot: Different components to expose HTTP endpoints
Apache Camel is an open source integration framework that allows you to integrate technologically diverse systems using a large library of components. A common use-case is to service HTTP based endpoints. Those of course come in several flavors and there is quite a choice in components to use. In this blog post […]
Calling an Oracle DB stored procedure from Spring Boot using Apache Camel
There are different ways to create data services. The choice for a specific technology to use, depends on several factors inside the organisation which wishes to realize these services. In this blog post I’ll provide a minimal example of how you can use Spring Boot with Apache Camel to call […]
A transparent Spring Boot REST service to expose Oracle Database logic
Sometimes you have an Oracle database which contains a lot of logic and you want to expose specific logic as REST services. There are a variety of ways to do this. The most obvious one to consider might be Oracle REST Data Services. ORDS is quite powerful and for example supports […]
Save File to Oracle Cloud Infrastructure Object Storage from Node through REST API
Oracle Cloud Infrastructure Object Storage is a public cloud service for storing data to which you need fast, immediate, and frequent access. As Oracle states: “The Oracle Cloud Infrastructure Object Storage service is an internet-scale, high-performance storage platform that offers reliable and cost-efficient data durability. The Object Storage service can […]
Securing Oracle Service Bus REST services with OAuth2 client credentials flow (without using additional products)
OAuth2 is a popular authentication framework. As a service provider it is thus common to provide support for OAuth2. How can you do this on a plain WebLogic Server / Service Bus without having to install additional products (and possibly have to pay for licenses)? If you just want to […]
Configure and test your ADF REST Resource
In my previous post I showed the steps you have to take to create your first ADF REST resource. You can find it here: First steps with REST services on ADF Business Components. I will continue my exploration in the world of ADF REST. We are now going to configure […]
Quickly setup a persistent React application
After having recently picked up the React framework, I figured I’d share how I quickly setup my projects to implement persistence. This way you spend minimal time setting up the skeleton of your application, letting you focus on adding functionality. This is done by combining a few tools. Let’s take […]
5 main building blocks of the new Visual Builder Cloud Service
In may 2018 Oracle introduced the new version of Visual Builder Cloud Service. This version is not just aimed at the Citizen Developer, in the end an experienced JavaScript can do nice things with it. In this blog I will have a look at 5 of the 6 main building […]
First steps with REST services on ADF Business Components
Recently we had a challenge at a customer for which ADF REST resources on Business Components were the perfect solution. Our application is built in Oracle JET and of course we wanted nice REST services to communicate with. Because our data is stored in an Oracle database we needed an […]
Automate calls to SOAP and REST webservices using simple Python scripts
Probably not many people will tell you running batches over webservices is a good idea. Sometimes though, it can be handy to have a script available to generate webservice calls based on a template message with variables and automate processing the response messages. In addition, if you have a large […]
Oracle REST Data Services (ORDS)
While preparing for writing an article about “Oracle API Platform Cloud Service” I wanted to quickly be able to generate example JSON payload’s based on some tables in the “HR’ schema. To achieve this, I came across “Oracle REST Data Services (ORDS)” and wanted to know more about it. In […]
Handle HTTP PATCH request with Java Servlet
The Java Servlet specification does not include handling a PATCH request. That means that class javax.servlet.http.HttpServlet does not have a doPatch() method, unlike doGet, doPost, doPut etc. That does not mean that a Java Servlet can not handle PATCH requests. It is quite simple to make it do that. The […]
Implementing Authentication for REST API calls from JET Applications embedded in ADF or WebCenter Portal using JSON Web Token (JWT)
The situation discussed in this article is as follows: a rich client web application (JavaScript based, could be created with Oracle JET or based on Angular/Vue/React/Ember/…) is embedded in an ADF or WebCenter Portal application. Users are authenticated in that application through a regular login procedure that leverages the OPSS […]
Oracle JET – Filtering Rows in Table with Multiselect and Search Field Filters
A common requirement in any web application: allow the user to quickly drill down to records of interest by specifying relevant filters. The figure overhead shows two way of setting filters: by selecting from the [limited number of] existing values in a certain column – here Location – and by […]
Oracle Mobile Cloud Service (MCS): Overview of integration options
Oracle Mobile Cloud Service has a lot of options which allows it to integrate with other services and systems. Since it runs JavaScript on Node.js for custom APIs, it is very flexible. Some features allow it to extent its own functionality such as the Firebase configuration option to send notifications […]
Smooth, easy, lightweight – Node.js and Express style REST API with Java SE
It is easy to be seduced by some of the attractive qualities of Node (aka Node.js) – the JavaScript technology that makes server side development fun again. Developing light weight applications that handle HTTP requests in a rapid, straightforward way with little overhead and no bloated infrastructure is easy as […]
Oracle PaaS Cloud – The API Platform Service – launch date Winter 2016/17
APIs are hot. Public APIs are an enterprise’s programmatic interface to B2B partners, governments and other stakeholders including app and web builders. Internally, APIs are the touch points for encapsulated functionality and data and the entry points into microservices – to name that other hot term. APIs are usurping the […]
Sonatype Nexus 3.0. Using the new Groovy API
Sonatype Nexus 3.0 does not have the REST API which was available in Nexus 2.x (see the discussion here). This provides a challenge in case you want to automate certain tasks. Nexus 3 does provide a Groovy API however which allows you to write your own scripts and upload them […]
Master – Detail synchronization in an Oracle JET rich client application against a REST API
In a recent article (Extend Oracle JET with Table on REST API and Deploy to Node.js in Application Container Cloud) , I have described how I created a data bound Oracle JET application with a rich JET table component that reads its data from a REST API (that gets it […]