My Applied Research Log

September - December 2011

• September
  • group meetings at CDOT
  • MTOM project meeting at NexJ Systems schedule on 9/23
  • Read the MTOM (SOAP Message Transmission Optimization Mechanism) specification. [1]
  • Project Change: MTOM to SQLite Adapter (9/16).
  • SQLite Adapter project meeting at NexJ Systems (9/23)
  • Read Using SQLite by Jay A. Kreibich, O'Reilly 2010.
  • Continue with the Knowledge Base project (initiated in July 2011).

July - August 2011

• Applied Research Notes (July-August 2011)
• Research Tasks
  • Inspect the code base of NexJ Express
    • the Persistence engine
    • the Integration engine
  • the tree optimization problem (JSON Integration Adapter)
• Events
  • 7/10/2011 I checked out the code base (revision 540) of NexJ Express from OHT with MercurialEclipse. JAVA_HOME must be set to JDK 1.5, not 1.6. The revised version "Working with NexJ Express Source Code" (2011-3-15) must be used.
  • 7/25/2011 Regarding the JSON Integration Adapter project, I checked out the code base from Brian Lim's mercurial code repository. I ran two JUnit tests and one of them had caused some errors. Later the problem was fixed by Brian.
  • team meetings

June 9, 2011

• The 1st NexJ Academic Research User Group Meeting [2]
  • NexJ Project Ideas

January - April 2011

Week 1/January 2011

1/12/2011 (Wed)

• NexJ project team meeting

1/15/2011 (Sat)

• Research Notes on the SQLAdapter class

Week 2

1/18/2011 (Tue)

• Summary of Code Walkthrough by Grace
  

1/19/2011 (Wed)

• NexJ project team meeting
  • The PostgreSQLAdapter project must be completed by March 31, 2011.
  • New projects will be proposed to NexJ for approval.
• Research Notes on the SQLSchemaManager class
  

1/20/2011 (TH)

• NexJ Coding Standards received from Grace
• Checkd out the code base of the PostgreSQLAdapter project from the mercurial repository
  • build errors encountered

Week 3

1/24/2011 (Mon)

• ran the JUnit test PostgreSQLSchemaManagerTest on my laptop (vs the CDOT desktop)
  • errors encountered

1/25/2011 (Tue)

• Research Notes on the SQLAdapter class

1/26/2011 (Wed)

• NexJ team meeting
• error encounterd in running PostgreSQLSchemaManagerTest
• system path error encountered
  • solution was offered by Grace

1/27/2011 (Friday)

• met with Grace to understand how he has used JUnit tests to guide his research and coding process

Week 4

2/09/2011 (Mon)

• met with Jordan and Dawn to discuss about two projects that have been approved by NexJ

2/11/2011 (Wed)

• checked out Revision 28 from the code repository, ran PostgreSQLSchemaMangerTest and PostgreSQLAdapterTest
• uploaded the JUnit testing results (the current status of the project)
  • PostgreSQSchemaManagerTest
  • PostgreSQLAdapterTest
• reviewed NexJ Developer's Guide (coding standard)

Week 5/February

2/07/2011 (Mon)

• posted the summary of JUnit errors on PostgreSQLAdatperTest

2/09/2011 (Wed)

• posted Grouping of methods to be implemented 2/09/2011
• team meeting
  • look into jQuery, Scheme (Racket?), Goolge Web Toolkit (GWT)
  • work with Tung

Week 6

2/16/2011 (Wed)

• code review of PostgreSQLSchemaManager: 1st iteration
  • summary
• team meeting
  • work with Tung: his timeline
  • investigate testRead in PostgreSQLAdapterTest

at org.postgresql.ds.jdbc23.AbstractJdbc23PooledConnection$StatementHandler.invoke(AbstractJdbc23PooledConnection.java:455)
    at $Proxy2.setString(Unknown Source)
    at nexj.core.rpc.sql.ra.SQLManagedConnection$SQLPreparedStatement.setString(SQLManagedConnection.java:1689)
    at nexj.core.persistence.sql.SQLAdapter$1.setValue(SQLAdapter.java:105)
    at nexj.core.persistence.sql.SQLCursor.query(SQLCursor.java:159)
    ... 26 more

• action: postgresql source code received from Grace

2/17/2011 (Th)

• revision 39 was pulled
  • testRead has a different failure trace (problem with serialized representation of readCollectionWhere.xml)

Test object does not match the serialized representation at
"file:/C:/workspace3.5/jan222011/core/bin/nexj/core/persistence/sql/data/readCollectionWhere.xml"
    at junit.framework.Assert.fail(Assert.java:47)

• Vogella's tutorial on GWT [3]

Week 7

2/23/2011 (Wed)

• code review of PostgreSQLSchemaManager (revision 45) : 2nd iteration
  • summary
• team meeting
  • work with Tung: a list of problems encountered

Week 9/March

3/08/2011 (Tue)

• 2 JUnit errors encountered on running revision 76 on my laptop

3/09/2011 (Wed)

• team meeting
• meet with Tung to understand his deployment problems
• draft Applied Research Summary on the PostgreSQLAdapter project

Week 10

3/16/2011 (Wed)

• team meeting

3/18/2011

• downloaded NexJ Studio Express (v 7.1) from Open Health Tools and tried to install it on my laptop

Week 11

3/23/2011 (Wed)

• team meeting
• solving the problems of installing NexJ Studio Express (v 7.1) on my laptop
• mentoring Tung on creating a GWT application, based on Grace's sample application

3/26/2011 (Sat)

• released Applied Research Findings [4]

Week 12/April

• April 13 - student presentations for OCE Connections
• April 20 - project-end meeting with NexJ and Ontario Centres of Excellence (OCE)
• Tung delivered visual guides and videos.[5]
• Tung delivered the GWT application.