A WordPress plugin that replaces the default WordPress search with Solr. Features include:
Multi server/core support
Note that this plugin requires you to have an instance of Solr using a schema with the following fields: id, permalink, title, content, numcomments, categories, categoriessrch, tags, tagssrch, author, type, and text. The facet fields (categories, tags, author, and type) should be string fields. You can make tagssrch and categoriessrch of any type you want as they are used for general searching. The plugin is distributed with a Solr schema you can use at solr-for-wordpress/schema.xml
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Dominique Bejean for custom field support and testing.
Eric Pugh multi server support.
Dustin Rue – fixes for batch import and multisite.