# A new committer to the ref\_impl\_java project
**URL:** https://discourse.openehr.org/t/a-new-committer-to-the-ref-impl-java-project/12670
**Category:** Reference Implementation: Java (archive)
**Created:** [12 December 2007 09:29 UTC](https://discourse.openehr.org/t/a-new-committer-to-the-ref-impl-java-project/12670 "2007-12-12T09:29:21Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@system](https://discourse.openehr.org/u/system)
#### Post date: [12 December 2007 09:29 UTC](https://discourse.openehr.org/t/a-new-committer-to-the-ref-impl-java-project/12670/1 "2007-12-12T09:29:21Z")
Dear all,
I am glad to announce that the Java project just got a new committer, Humberto Naves from Zilics, Brazil. He is working closely with Beatriz de Faria Leão and Lincoln A Moura Jr in a team prototyping archetype based system. Over the past months, Humberto has demonstrated that he is both a competent Java developer and engaged in the Java implementation of openEHR.
Welcome, Humberto!
Cheers,
Rong
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### Author:  [@Humberto\_Naves](https://discourse.openehr.org/u/Humberto_Naves)
#### Post date: [12 December 2007 13:42 UTC](https://discourse.openehr.org/t/a-new-committer-to-the-ref-impl-java-project/12670/2 "2007-12-12T13:42:28Z")
Hi,
I am proud to be announced by Rong as a committer of the Java project. So, let me introduce myself…
I am Humberto Naves from P2D (a partner of Zilics) an in fact, we are prototyping an archetype based EHR. The purpose of the project is to build a free health record (based on the web) to all citizens of Brazil.
Over the past months, we worked on:
1 - The persistence layer of the EHR: how we can achieve querability without loss of generality and speed?
2 - The presentation layer: how to build dynamic AJAXified web pages based on templates that look clean and easy to use?
3 - The core layer: how to check if the all constraints from archetypes are met, how to interpret the data from the COMPOSITION’s efficiently (example: alert the user of a drug interaction), etc
My goal here is to share some knowledge acquired during the development of the EHR.
Best regards,
Humberto Naves