Figure out a hook system for indexing data from other plugins

[erochest]

Right now, this supports TEI Plugin and Fedora Connector, but both are hard-coded. This should be replaced by a hook system to any plugin can submit data for the document when it's being indexed.

[waynegraham]

Actually this a bit bigger an issue than just TEI & Fedora; plugins like SimplePages and ExhibitBuilder also should be indexed (or at least one would have the expectation that they would) when they do a search. I think at a minimum, we need to figure out how to handle the plugins that ship with Omeka that generate content and move on form there.

[erochest]

Here's my understanding of our discussion of the solution. Feel free to correct me:

Under SOLR_SEARCH_PLUGIN_DIR will be a new directory that contains configuration files for other plugins. Each configuration file will most likely be an INI file, but I may have to use a DSL.

The configuration files will specify other entities to index and search. These will be defined by the tables and columns to use for the Solr fields.

We'll also add a new standard facet, Result Type. Search plugins (or whatever we're calling these) can define a facet value for Result Type for the items that they define. Items will be included in this with the field value "Item".

Example Config File

Here's a sample config file for the Exhibits plugin. The real one will contain more entries for Sections, etc.

; Sections without dots are main sections.
[Exhibits]
; The column to pull the ID from. This defaults to 'id'.
id_column=id
; The facet value for "Result Type"
result-type=Exhibits
; For the moment, I'm restricting this to one table, but I'm open to convincing...
table={$prefix}_exhibits
; Optional
flag=public
; Optional, will also index the taggings, if the entity is taggable.
tagged=yes

; Sections with dots are in the form SECTION.COLUMN.
[Exhibits.title]
; A name, just in case. I expect it will really only be used for facets.
name=Exhibit Title

[Exhibits.description]
name=Exhibit Description

[Exhibits.featured]
name=Featured Exhibit
; If given and truthy, this will be used as a facet.
facet=yes

[jeremyboggs]

So in your example, you'd add a separate section for Exhibit Pages?

[erochest]

Exactly. And they'd be separate Result Types also (if defined that way).

[erochest]

Mocking up some options for config at https://gist.github.com/2586346