ANGULAR: Create an Angular 10 project using Bootstrap – INDEX

Posted on By Andre Dias
angular, bootstrap, javascript

  Toggle nav Angular 10 plus Bootstrap Step-by-Step A tutorial split into small steps.   Using Angular 10, Bootstrap, Ng-bootstrap, etc., the application grows in steps treating one subject at a time up to a full application plus extra subjects. Step Zero – How does this tutorial work? Understand how to use it. Download the … Read More “ANGULAR: Create an Angular 10 project using Bootstrap – INDEX” »

GIT: I do love Git stash – Super hero when things go wrong

Posted on By Andre Dias
versioning

SCENARIO Node.js project using Angular, etc. Usually, manually copying a project like an example above may take a very long time.  Making synced snapshots using a sync tool is a better approach. A much better alternative is considering using a versioning tool. I chose Git. Probably, you may apply the concepts suggested here using another … Read More “GIT: I do love Git stash – Super hero when things go wrong” »

WEB: Site Performance – At Least a Quadruped Beast

Posted on By Andre Dias
software engeneering

  Maintaining website performance is like working with a quadruped beast. If just one leg fails, your site goes down.     When Is It Time to Think About Performance? I usually think about performance when I access a site that has a heavy page, but heavy is not a good measure since it leads … Read More “WEB: Site Performance – At Least a Quadruped Beast” »

REST: REST Concepts and Practices Summary

Posted on By Andre Dias
network, protocol, web design

An Ordered Information Collection from Several Sources IMPORTANT NOTE This post is a summary of my researches. The texts are copied as they are or adapted to make it shorter or to make it fit the summary’s purpose. They are all referenced, sometimes twice — in loco or below under References topic. There is no intention … Read More “REST: REST Concepts and Practices Summary” »

Windows: Windows Cannot Find a System Image on This Computer

Posted on By Andre Dias
Systems, windows

  This post is based from my direct experience during many times when I desperately needed to restore a backup. Most of all were successful, but sometimes I had to go through some issues that I describe below the tricks and tips that helped me to get success. There is no simple and magic formula … Read More “Windows: Windows Cannot Find a System Image on This Computer” »

WILDFLY/JBOSS: WFLYJPA0061: Persistence unitName was not specified and double persistence unit definitions

Posted on By Andre Dias
java

  >PROBLEM Creating a persistence.xml file having two persistence units caused the following Wildfly’s error message: Caused by: java.lang.IllegalArgumentException: WFLYJPA0061: Persistence unitName was not specified and there are 2 persistence unit definitions in application deployment deployment “todos.war”. Either change the application deployment to have only one persistence unit definition or specify the unitName for each … Read More “WILDFLY/JBOSS: WFLYJPA0061: Persistence unitName was not specified and double persistence unit definitions” »

WILDFLY/JBOSS: QUICKSTARTS EXAMPLES: org.wildfly.quickstarts 20.0.0.Beta1-SNAPSHOT ISSUE

Posted on By Andre Dias
server

PROBLEM After download of Wildfly QuickStart Examples (https://github.com/wildfly/quickstart), the attempt to run the command mvn clean package -Pdocs to generate documentation, fails and returns:   Non-resolvable import POM: Failure to find org.wildfly.bom:wildfly-jakartaee8-with-tools:pom [ERROR] Non-resolvable import POM: Failure to find org.wildfly.bom:wildfly-jakartaee8-with-tools:pom:20.0.0.Beta1-SNAPSHOT in https://repository.jboss.org/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the … Read More “WILDFLY/JBOSS: QUICKSTARTS EXAMPLES: org.wildfly.quickstarts 20.0.0.Beta1-SNAPSHOT ISSUE” »

WILDFLY/JBOSS: POSTGRESQL AND MYSQL DATASOURCE CONFIGURATION

Posted on By Andre Dias
database, server

ENVIRONMENT Java 13 Wildfly 18 Windows 10 / *Nix  (also applicable adapting the commands) DRIVER CONFIGURATION The trick is to match the requirements of the participants. They are: – the application server’s (the way it requires the configuration) – the target database version (type of database and version) – the driver compatible with the target … Read More “WILDFLY/JBOSS: POSTGRESQL AND MYSQL DATASOURCE CONFIGURATION” »

POSTGRESQL: RESTORING DATABASES WITH DIFFERENT USER FROM THE CURRENT WINDOWS USER

Posted on By Andre Dias
database

Your current user on Windows doesn’t let you perform a PostgreSQL’s command? Some PostgreSQL commands like createdb, pg_restore, etc. works assuming the current user logged on the console (or system). This approach makes simple things; Unfortunately, many times, the current user doesn’t exist on the database, mainly when restoring legacy databases. On *Nix environment, it … Read More “POSTGRESQL: RESTORING DATABASES WITH DIFFERENT USER FROM THE CURRENT WINDOWS USER” »