如何使用DBIx :: Class在PostGIS几何列上创建GiST索引？

Question

I have a Postgres + PostGIS database with geometry columns.

I would like to add indices to them, eg

create index plot_idx_location on plot using gist (location);

I know how to create indices in DBIx::Class using the sqlt_deploy_hook method, but I am unsure what the syntax for add_index is to generate the above statement.

Reading the SQL::Translator documentation ( http://search.cpan.org/~frew/SQL-Translator-0.11016/lib/SQL/Translator/Schema/Index.pm ) seems to be of no help. There's no examples on using the "options" parameter, and breifly looking at the source code, I suspect it's not even supported.

So is there a way to do this, or do I need to hardcode the SQL statement in the sqlt_deploy_hook method instead?

Answer 1

DBIx::Class itself doesn't generate DDL queries, SQL::Translator does. You have to generate such special indexes yourself, for example in an after 'deploy' method modifier in your schema class or with the deployment_statements methods.