DBIC for SQL hackers

Assumption:

This is for people that know Perl, and usually use DBI to connect to databases.

1. Intro:

   • Rationale for using dbic over dbi.

2. Database layout definitions

   • Introduce Schema::Loader (aka use existing layout/maintain in DB).
   • Explain Result classes + ResultSources compared to table/view/index definitions.
   • Explain relationships/contraints etc in DBIC.
   • Importance of Primary Keys for DBIC

3. Basic usage

   • Schema files
   • How to connect, when reconnect is done
   • Mention AutoCommit/on_connect
   • What is ResultSet, how to get one

4. Data entry

   • Compare INSERT statements with create()
   • Multi-level create
   • Populate (insert_bulk)
   • find_or* (UPSERT/etc)
   • UPDATE / update
   • update_or*

5. Data fetching

   • Simple SELECTs with WHERE clauses (find/search)
   • JOINing
   • Aggregation (plus column ops ala ResultSetColumn)
   • Subselects
   • Literal sql / bind params
   • Related objects
   • Multiple (related) objects at once

6. Extras/Optimisation

   • Inflation/Deflation
   • HashRefInflator
   • ??

DBIC Tutorial

DBIx::Class::Tutorial v0.01 has been on CPAN for sometime (and in the DBIC repo). v0.02 is a work in progress (for a while) on http://desert-island.me.uk/~castaway/web/.

TODO:

• Clean up existing pages with regard to current DBIC best practices.
• Complete with subselects, binds etc #TBD.
• Roll the above docs into the tutorial

@draft

Last modified: 2012-02-06T11:36:23

Home