Oracle JET – Filtering Rows in Table with Multiselect and Search Field Filters

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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 specifying a search string whose value should occur in records to be displayed after filtering.

Oracle JET is a toolkit that supports development of rich web (more...)

Adding a Cross Instance, Cross Restarts and Cross Application Cache to Node Applications on Oracle Application Container Cloud

In a previous post I described how to do Continuous Integration & Delivery from Oracle Developer Cloud to Oracle Application Container Cloud on simple Node applications: Automating Build and Deployment of Node application in Oracle Developer Cloud to Application Container Cloud. In this post, I am going to extend that very simple application with the functionality to count requests. With every HTTP request to the application, a counter is incremented and the current counter value (more...)

Automating Build and Deployment of Node application in Oracle Developer Cloud to Application Container Cloud

A familiar story:

  • Develop a Node application with one or more developers
  • Use Oracle Developer Cloud Service to organize the development work, host the source code and coordinate build jobs and the ensuing deployment
  • Run the Node application on Oracle Application Container Cloud

I have read multiple tutorials and blog posts that each seemed to provide a piece of puzzle. This article shows the full story – in its simplest form.

We will:

When Screen Scraping became API calling – Gathering Oracle OpenWorld 2017 Session Catalog with Node

A dataset with all sessions of the upcoming Oracle OpenWorld 2017 conference is nice to have – for experiments and demonstrations with many technologies. The session catalog is exposed at a website – https://events.rainfocus.com/catalog/oracle/oow17/catalogoow17 

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With searching, filtering and scrolling, all available sessions can be inspected. If data is available in a browser, it can be retrieved programmatically and persisted locally in for example a JSON document. A typical approach for this is (more...)

Integrating Vue.js in ADF Faces 12c Web Application – using HTML5 style Document Import

Vue.js is a popular framework for developing rich client web applications, leveraging browsers for all they are worth. Vue.js has attracted a large number of developers that together have produced a large number of quite interesting reusable components. ADF Faces is itself a quite mature framework for the development of rich web applications. It was born over 10 years ago. It has evolved over the years and adopted quite a few browser enhancements (more...)

Get going with Node.js, npm and Vue.js 2 on Red Hat & Oracle Linux

A quick and rough guide on getting going with Node, npm and Vue.js 2 on a Enterprise Linux platform (Oracle Linux based on RedHat Linux)

Install Node.JS on a Oracle Enterprise Linux system:

 

as root:

curl –silent –location https://rpm.nodesource.com/setup_8.x | bash –

and:

yum -y install nodejs

(in order to disable the inaccessible proxy server that was setup for my yum environment I have to remove the line in (more...)

Using Vue.JS Community Component in My Own Application

In a recent blog article, I fiddle around a little with Vue.JS – Auto suggest with HTML5 Data List in Vue.js 2 application. For me, it was a nice little exercise to get going with properties and events, the basics for creating a custom component. It was fun to do, easy to achieve some degree of success.

Typing into a simple input field lists a number of suggestions – using the HTML5 data (more...)

Machine Learning in Oracle Database – Classification of Conference Abstracts based on Text Analysis

Machine Learning is hot. The ability to have an automated system predict, classify, recommend and even decide based on models derived from past experience is quite attractive. And with the number of obvious applications of machine learning – Netflix and Amazon recommendations, intelligent chat bots, license plate recognition in parking garages, spam filters in email servers – the interest further grows. Who does not want to apply machine learning?

This article shows that the Oracle (more...)

Virtualization on Windows 10 with Virtual Box, Hyper-V and Docker Containers

Recently I started working on a brand new HP ZBook 15-G3 with Windows 10 Pro. And I immediately tried to return to the state I had my previous Windows 7 laptop in: Oracle Virtual Box for running most software in virtual machines, using Docker Machine (and Kubernetes) for running some things in Docker Containers and using Vagrant to spin up some of these containers and VMs.

I quickly ran into some issues that made me (more...)