What the fq? A short summary of Solr query fields.

#And how to use them in Drupal

A popular search engine for Drupal is Apache Solr. Although installation and configuration of Solr can be done almost completely via the Drupal Admin UI, in some cases it can be very instructive to see and understand what data is sent to and from Solr when a search is done from Drupal.

First place to look when using Solr inside Tomcat is the log file of Tomcat, usually /var/log/tomcat6/catalina.out. If this file is not present in this directory on your system use

Solr 5: First look


Setting up Solr5

Solr 5 is now a stand-alone service and it is no longer necessary to run it in a container like Tomcat. The advantage of this is that Tomcat does not have to be installed any longer, which simplifies maintaining and securing the server Solr is running on.

Installation is also much simpler:

Automatically switch Drush versions per project

Now that Drush has become standard equipment in every developer's toolbox, and Drupal 8 is around the corner, you may find yourself asking "Which Drush version should I use?" While Drush 6 has a stable release, only Drush 7 can be used with Drupal 8. Usually, I use Drush 7. It works well with both Drupal 7 and Drupal 8, and even though is doesn't have a stable release yet, it feels pretty stable to me.

DrupalCon Amsterdam, 2014

Come to think of it, I almost decided not to go to the RAI in the morning! All the official sessions are over since thursday and yesterday there was only ‘codesprinting’ left. This is where you can help contributing to the Drupal community in an informal setting with other Drupal users.

Drupalcon Prague

From the 23rd to the 27th of September the annual DrupalCon was held in Prague. DrupalCon is the biggest Drupal event in Europe. This year there were 1840 attendees! The Drupal community is awesome and it again became clear that this community is the greatest asset of Drupal.
In this post a short summary of things that are worth mentioning.

Drupal CxO Barcelona

Last Thursday and Friday there was another Drupal CxO meeting. This time it was in Barcelona. The CxO event is for C-level executives of Drupal companies. It's all about business and doing what the Drupal community is good at: sharing knowledge and experience. It was good to see there were besides the usual suspects, new faces. This is just another sign the Drupal community is still growing.

Advanced Apache Solr boosting: a case study

Recently Triquanta build a specialized search engine for the Gemeentemuseum Den Haag (www.gemeentemuseum.nl). The goal of this project was to develop a search engine for finding museum objects within large collections. This search engine was based on research done by Marijn Koolen who works as an assistent professor at the University of Amsterdam (www.uva.nl). His research was part of the Catch Project (http://www.catchplus.nl/en).

Mastering solr part I: Development environment

At the moment the best search engine available for Drupal is Apache Solr. There are many Drupal sites which actually use Solr to power their search. Using the configuration options of the solr integration modules, the search is already quite decent, and this is where many developers stop tweaking Solr. In some situations however, it might be necessary to tweak solr beyond the standard configuration options. Luckily this tweaking is relatively easy: almost all tweaking of Solr can be done by adding and/or altering parameters to the request to Solr. The Solr integration modules on the other hand, offer hooks to alter the parameters send to Solr. So if the search behavior should be tweaked, the question is not 'Can it be done?', but rather 'What should I send to Solr, to get this behavior?'. This blog series will explain how Solr works in the first place, and will show how to debug and optimize indexing and querying.


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