PostgreSQL Adapter

PostgreSQL Adapter for NexJ

Project Goal

Develop an adapter to enable NexJ Express model to interact with PostgreSQL database

Current Status

• Phase 4
• Phase 5
• Phase 6

Project Phases

Phase 1: Investigation (DONE)

• Get requirements from NexJ (Meeting on Friday Nov 5th)
• Walk-through the code
• Familiarization with PostgreSQL

Phase 2: Connect to PostgreSQL server (DONE)

• Connect to PostgreSQL server

Phase 3: PostgreSQLSchemaManager (DONE)

• Estimated Duration: 3 weeks (Jan 17 - Feb 11, 2011)
• Extending SQLSchemaManager
• Research Notes

Phase 4: PostgreSQLAdapter

• Estimated Duration: 3 weeks (Feb 14 - 25, 2011)
• Extending SQLAdapter
• Research Notes (updated on 2/17/2011)

Phase 5: PostgreSQL UnitTests and Optimization

• Estimated Duration: 2 weeks (Feb 28 - Mar 11, 2011)
• Add database specific tests fostr PostgreSQL

  test for required contrib scripts

  test for custom blob read & write functions

• Add PostgreSQL specific optimization

Phase 6: Test with Express Studio (Mar 7- Mar 11, 2011)

• Run model in Express studio using the postgresql adapter
• create scripts for database initialization, creation and dumping
• create scripts for JBoss

Phase 7: Code Review

• Estimated Duration:
• Send Code to NexJ For Review

Project Repository

• URL for central repository of the project is: http://liberia.proximity.on.ca:81/

• Steps to work with the repository

1- Follow the instructions to create the NexJ Express workspace from the manual.

2- After creating 'ws' directory,

open Eclipse and

click on File -> Import -> Mercurial -> Clone Existing Mercurial Repository

Enter this information:

URL: ssh://liberia.proximity.on.ca/mercurial/postgreSQL/core

Username: developer

Clone directory name: core

3- The central repository's structure is:

Main branch called 'default'

New branch or branches with this naming convention: 'wsComitter' e.g. 'wsMinoo'

4- After cloning the project, follow these steps to add a new branch with your user name:

First make sure the active branch is 'default'. Notice the top of the Package Explorer e.g. core[5:b8b2f102343@default(tip)]

Right click on 'core' in the Package Explorer

Click on 'Team' -> Add Branch

Enter the branch name in the box -> Finish

Enter the commit message -> OK

Check the 'Force Push' if applicable.

Now the branch name at the top of Package Explorer is changed to the new branch name.

5- To switch to a different branch, choose 'Switch' instead of 'Add Branch'

• NOTE! To avoid any conflict, do the 'Pull' every day and before any push.
• NOTE! First just 'Commit' changesets and do not 'Push' them until the end of the day or the time you are confident by latest changes to the code, then 'Push' them all at once and 'Merge' them with the 'default' branch in central repository.

Resources

• Debugging

| Unit Testing for non Default SQL Adapter

• Intro

Concept of Adapter [1]

FOSSLC PostgreSQL

• Java
• Database & Persistence
• JDBC
• PostgreSQL Specifications
• MySQL Specifications
• Postgre - MySQL Compare