June 27, 2022
Video for lesson 17 of OpenXava course In this new lesson of our course, you'll learn to use the Hibernate @Formula annotation in your OpenXava entities, so you can map a SQL statement to a property. This allows you to have properties with a calculation where you can search and filter in list mode. Watch the video. |
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June 7, 2022
Video for lesson 16 of OpenXava course Calculated properties, those with just a getter, allows you to define any imaginable calculation using Java, but given that they have not a column in the database, your user cannot search or sort for that property. A way to solve this problem is to have a persistent property too, and synchronizing both, persistent and calculated, using a JPA callback method. It's not so difficult, watch the video. |
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May 30, 2022
Video for lesson 15 of OpenXava course Until now we have used @DefaultValueCalculator to calculate the next number of invoice or order in our small invoicing application, but this does not work in multiuser applications. To solve this problem, we're going to change it for a JPA callback method, using @PrePersist in this case. Watch the video. |
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May 23, 2022
Video for lesson 14 of OpenXava course In this new video you'll see an example of modifying the tables of your database using SQL statements directly, because sometimes the automatic schema evolution of OpenXava is not enough and we don't want to lose data in production databases. We invite you to watch the video. |
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May 16, 2022
Video for lesson 13 of OpenXava course In our invoicing application we're using as example we want that when the user clicks to create a new invoice or order the default value for VAT will be 21, but also we want to change this default value in any moment without changing the source code. To achieve this we're going to use a @DefaultValueCalculator and write the logic to read the default value for VAT from a properties file. Watch the video. |
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May 9, 2022
Video for lesson 12 of OpenXava course
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May 2, 2022
Video for lesson 11 of OpenXava course
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April 26, 2022
Software for hospitals with OpenXava
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April 18, 2022
Video for lesson 10 of OpenXava course
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April 11, 2022
Video for lesson 9 of OpenXava course
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April 4, 2022
XavaPro 6.6.3 released
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March 30, 2022
OpenXava 6.6.3 released
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March 7, 2022
From RPG to Java with OpenXava
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March 2, 2022
View inheritance to reuse UI definition
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February 24, 2022
JPA inheritance and agile development
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February 10, 2022
XavaPro 6.6.2 released
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February 8, 2022
OpenXava 6.6.2 released
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January 18, 2022
From Struts 2 MVC to OpenXava
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December 13, 2021
XavaPro 6.6.1 released
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December 9, 2021
OpenXava 6.6.1 released
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November 15, 2021
Business software in the cloud with Java
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November 3, 2021
XavaPro 6.6 released
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October 28, 2021
OpenXava 6.6 released
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October 18, 2021
OpenXava for teaching
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September 20, 2021
Refine the user interface with OpenXava
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September 13, 2021
From COBOL to Java with OpenXava
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September 7, 2021
Video for lesson 3 of OpenXava course
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August 9, 2021
Potable water in Ecuador
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July 28, 2021
Video for lesson 2 of OpenXava course
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July 16, 2021
XavaPro 6.5.3 released
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July 13, 2021
OpenXava 6.5.3 released
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June 21, 2021
An ERP for the metal industry
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June 16, 2021
Official YouTube channel for OpenXava
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June 4, 2021
XavaPro 6.5.2 released
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June 1, 2021
OpenXava 6.5.2 released
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May 13, 2021
Looking for an OpenXava developer in Valle del Cauca
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May 10, 2021
Ministry of Finance of Nicaragua with OpenXava
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April 15, 2021
XavaPro 6.5.1 released
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April 14, 2021
OpenXava 6.5.1 released
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March 23, 2021
RFID solutions with OpenXava
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March 11, 2021
Looking for a OpenXava developer in Misiones
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February 24, 2021
OpenXava 6.5 released
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January 19, 2021
University software made with OpenXava
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December 15, 2020
The best Java frameworks of 2020
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November 23, 2020
Coruña Harbor Market with OpenXava
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November 13, 2020
XavaPro 6.4.2 released
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November 11, 2020
OpenXava 6.4.2 released
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October 13, 2020
ZX-Ed: Open source database editor
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September 24, 2020
XavaPro 6.4.1 released
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September 23, 2020
OpenXava 6.4.1 released
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September 7, 2020
From Excel to OpenXava
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August 4, 2020
XavaPro 6.4 released
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July 29, 2020
OpenXava 6.4 released
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June 15, 2020
Online Management Systems for Schools
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May 18, 2020
XavaPro 6.3.2 released
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May 13, 2020
OpenXava 6.3.2 released
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April 27, 2020
Cloud ERP with OpenXava
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April 6, 2020
XavaPro 6.3.1 released
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April 2, 2020
OpenXava 6.3.1 released
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March 16, 2020
Intelligent Transport Systems with OpenXava
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February 27, 2020
OpenXava 6.3 released
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February 10, 2020
From Visual FoxPro to OpenXava
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January 20, 2020
Maven support for OpenXava
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January 13, 2020
Custom Closet Designs in New York
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December 11, 2019
XavaPro 6.2.2 released
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December 10, 2019
OpenXava 6.2.2 released
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November 25, 2019
Modern web apps without JavaScript
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November 6, 2019
XavaPro 6.2.1 released
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November 5, 2019
OpenXava 6.2.1 released
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October 14, 2019
Belgian Chocolate with OpenXava
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October 2, 2019
New issue and bug tracker for OpenXava
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September 30, 2019
XavaPro 6.2 released
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September 25, 2019
OpenXava 6.2 released
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September 16, 2019
Hospitals, Buses and Funeral Parlors
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July 8, 2019
Looking for a OpenXava developer in Misiones
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June 21, 2019
Looking for a OpenXava developer in Cartagena
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June 18, 2019
XavaPro 6.1.2 released
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June 17, 2019
OpenXava 6.1.2 released
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June 10, 2019
English NGO helping Africa
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May 16, 2019
XavaPro 6.1.1 released
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May 14, 2019
OpenXava 6.1.1 released
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May 6, 2019
Financial software in Mexico
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March 27, 2019
OpenXava 6.1 released
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March 11, 2019
An example of custom visual style
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February 19, 2019
iArchiva: Enterprise Content Management
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February 12, 2019
New OpenXava site
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January 24, 2019
A new version of XavaPro is available
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January 23, 2019
OpenXava 6.0.2 released
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January 16, 2019
XavaPro Corporate edition
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