Modernization Lessons: FTP & the Mainframe

Clayton Neff Consulting, Java, Problem Solving, Programming, Spring Batch, Technology Snapshot Leave a Comment

One of my most recent projects involved helping a client move many decades of code from a mainframe environment to a distributed Java web environment. The client had engaged another company to actually transform the mainframe code to Java, and our team was tasked with making it all actually work.

One of the major areas we had to deal with was the transition of all of the batch processes. Of course, Spring Batch came to our rescue for most of the work, and was an easy choice as we were already using Spring Boot to wrapper the converted applications.

The most challenging part of the entire project was that the client did not want to move everything at once in a Big Bang, but rather a few programs as a time. This meant that some programs would be running in the Java environment while others remained on the mainframe.

In this blog, I discuss three data challenges we encountered in the transition of an enterprise mainframe to Java web application with Spring Batch, how we overcame them, and tips to keep in mind going forward when in similar migration situations.



Web Development Business

Making Regular Expressions Simple With VerbalExpressions

Chris Berry JavaScript, Problem Solving, Tutorial Leave a Comment

Regular expressions are not the easiest thing in the world to quickly understand. Most developers only work with regular expressions when they really, really have to.

But what if there was another way?

There is and it’s called VerbalExpressions. VerbalExpressions is a collection of over two dozen repositories and libraries that use plain and simple language to describe a regular expression. In fact the motto they use is, “Regular Expressions made easy”.

VerbalExpressions is a quick and easy way to write complex regular expressions. In this blog, I will use the VerbalExpressions JavaScript implementation as my library of choice to demonstrate this great tool to you.



Taking A Mixed Approach To Single-Page Applications

Chris Berry AngularJS, JavaScript, Problem Solving, Single-Page Application, Technology Snapshot Leave a Comment

A coworker came to me with a problem. The client he was working with would be building hundreds of single-page applications and all would need to be tied into a single shell application. He had first attempted to use an iFrame contained within another single-page application to display the child applications.

While this worked, he came up against another requirement: the child applications may or may not need access to data from the parent shell application.

It was at this point he came to me for suggestions. I had been playing with this exact idea for sometime; how can you manage a collection of Single-Page Applications and still share data between them?

At this point, I decided to create a hybrid solution of mixing Single-Page Applications with a server-rendered shell application. The following is the process I took for creating this solution, highlighting some of the pain points with some suggestions for further enhancements.



Web Development Business

Creating a SQL Database Project for Isolated Development

Rusty Divine .NET, Databases, Problem Solving, Technology Snapshot, Tutorial Leave a Comment

In this article you see how to create a database project that will let you quickly and consistently deploy a database to your local environment. This approach can help to solve some issues from team members interfering with each other’s work on a shared development database.

Then, in an upcoming article, we will show you how to take the next step to include this database project in your continuous integration process and deploy it to each environment up the chain to production so that you can eliminate the need for any direct interaction with database updates.



ElasticSearch

Anatomy Of Setting Up An Elasticsearch N-Gram Word Analyzer

Adrienne Gessler Java, Problem Solving, Technology Snapshot 6 Comments

To say that n-grams are a massive topic would be an understatement. Do a quick search and you will find yourself staring down volumes of information on linguistics and language models, on data mining, or on the implication of the breakdown of specific proteins on the decline of debutante culture. Okay, I’m kidding about that last one. But if you …