Advanced development with eZ Find - part 3 : Leveraging the Solr syntax
Monday 05 July 2010 2:53:02 am
Step 3 : How to create complex search filters
Here are a few illustrations of what it is possible to achieve using the vast set of Lucene operators. The set of available operators depends on the deployed Solr version ( Solr 1.4, shipped with eZ Find 2.2 at the time of writing this post ).
'filter', array('NOT ( attr_title_t:(ez+find) OR attr_intro_t:(ez+find) )')
Result :
Only returns results which contain the 'ez find' or 'eZ Find' expression in the 'title' or 'Intro' attributes. Note the usage of the 'text' (_t) of the 'title' attribute, bringing case-insensitivity, unlike the 'string' type.
'filter', array('attr_title_s:[A TO G] AND ezf_df_text:google~0.7')
Result :
Only returns results of which the 'title' starts by A,B,C,D, E or F (G excluded), and the content of which approximately contains the 'google' expression ( means it may also contain : Google, iGoogle, etc.).
- Note : the '0.7' ratio can be adjusted to better suit a given situation
- Note bis : the 'ezf_df_text' field is built dynamically, by copying the content of all of the document's 'string', 'text' ou 'keyword' fields. One could also use the 'ezf_sp_words' field if the spelcheck feature is enabled. See the schema.xml file, and the definition of these “copyField” fields for more details.