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Perl 6 DBDI 201007 (OUTDATED, see 201008)

by Tim Bunce

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For an updated version see http://www.slideshare.net/Tim.Bunce/perl6-dbdi-yapceu-201008

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Database interfaces for Java, C#, VB etc also suck, but are much more functional
Perl has its own database drivers, as do Python, Ruby, PHP, tcl etc etc
Just about every open source language has its own database drivers
Some even have more than one set of database interfaces and drivers
They're All limited
Most provide access to a fraction of database client functionality
They're All different
Even the ones modelled on the DBI differ in significant ways
They're All duplicating development effort
So much more could be achieved if the same effort was focussed on fewer drivers that could be shared across languages
Diversity is good, but this is madness.
All drivers can implement the common API,
then any parrot language can use any driver
We need an API that is...
The only good fit is the Java JDBC API
“JDBC is the new ODBC”
So I'm proposing that the JDBC API specification be the common database driver API for Parrot
The goal being to be able to use the official JDBC docs as the primary docs for the API
The only good fit is the Java JDBC API
“JDBC is the new ODBC”
So I'm proposing that the JDBC API specification be the common database driver API for Parrot
The goal being to be able to use the official JDBC docs as the primary docs for the API
The only good fit is the Java JDBC API
“JDBC is the new ODBC”
So I'm proposing that the JDBC API specification be the common database driver API for Parrot
The goal being to be able to use the official JDBC docs as the primary docs for the API
Language interface layer adapts the JDBC API to the particular needs of that language

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Jing Ya at Jing Ya 2 years ago
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Tom Walsh, High performance computing specialist at University of Dundee Tags perl perl6 dbdi 2 years ago
Tatsuhiko Miyagawa, Software Engineer at Six Apart 2 years ago

Perl 6 DBDI 201007 (OUTDATED, see 201008) Presentation Transcript

In 2007 I said...
Database interfaces for open source languages suck
They’re all limited They’re all different They’re all duplicating development effort
We need a common database driver API for Perl 6 and Parrot
But what?
Mature, Stable, Functional, Object Oriented Well documented with a test suite Well known to a wide user base Well known to driver developers
JDBC
JDBC No, not Java, just the JDBC API The class and method names, the semantics the documentation the test suite
Actually, not plain JDBC Sanitize the worst inﬂuences of Java Easier to use for dynamic languages
Your Code DBI DBD Database Client Library
Your Code DBI v2 API DBI DBD Database Client Library
Your Code DBI v2 API DBI DBDI API DBD Database Client Library
Your Code DBI v2 API DBI DBDI API DBD Database Client Library
NO JDBC FOR THIS! Your Code DBI v2 API DBI DBDI API DBD USE JDBC Database Client Library FOR THIS
2010
java2perl6api Generates Perl 6 Role modules that mirror the API of speciﬁed Java Classes http://github.com/timbunce/java2perl6
DBDI A database driver manager and driver implementation framework in Perl 6 Uses the roles generated by running java2perl6api java.sql.DriverManager http://github.com/timbunce/DBDI
It Runs! A working PostgreSQL driver is included in DBDI It’s very minimal today (July 2010) but it only took a few hours to write
Next steps?
Build up a class/role hirearchy borrowing from open source JDBC drivers Separate driver-speciﬁc logic from driver-independant logic to make it easy to implement drivers
Interested? Come and join the fun! dbdi-dev@perl.org #dbdi on irc.freenode.org

Perl 6 DBDI 201007 (OUTDATED, see 201008)

by Tim Bunce

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Perl 6 DBDI 201007 (OUTDATED, see 201008) Presentation Transcript