Book Image

Solr 1.4 Enterprise Search Server

By : David Smiley, Eric Pugh
Book Image

Solr 1.4 Enterprise Search Server

By: David Smiley, Eric Pugh

Overview of this book

<p>If you are a developer building a high-traffic web site, you need to have a terrific search engine. Sites like Netflix.com and Zappos.com employ Solr, an open source enterprise search server, which uses and extends the Lucene search library. This is the first book in the market on Solr and it will show you how to optimize your web site for high volume web traffic with full-text search capabilities along with loads of customization options. So, let your users gain a terrific search experience.<br /><br />This book is a comprehensive reference guide for every feature Solr has to offer. It serves the reader right from initiation to development to deployment. It also comes with complete running examples to demonstrate its use and show how to integrate it with other languages and frameworks.<br /><br />This book first gives you a quick overview of Solr, and then gradually takes you from basic to advanced features that enhance your search. It starts off by discussing Solr and helping you understand how it fits into your architecture—where all databases and document/web crawlers fall short, and Solr shines. The main part of the book is a thorough exploration of nearly every feature that Solr offers. To keep this interesting and realistic, we use a large open source set of metadata about artists, releases, and tracks courtesy of the MusicBrainz.org project. Using this data as a testing ground for Solr, you will learn how to import this data in various ways from CSV to XML to database access. You will then learn how to search this data in a myriad of ways, including Solr's rich query syntax, "boosting" match scores based on record data and other means, about searching across multiple fields with different boosts, getting facets on the results, auto-complete user queries, spell-correcting searches, highlighting queried text in search results, and so on.<br /><br />After this thorough tour, we'll demonstrate working examples of integrating a variety of technologies with Solr such as Java, JavaScript, Drupal, Ruby, XSLT, PHP, and Python.<br /><br />Finally, we'll cover various deployment considerations to include indexing strategies and performance-oriented configuration that will enable you to scale Solr to meet the needs of a high-volume site.</p>
Table of Contents (15 chapters)
Solr 1.4 Enterprise Search Server
Credits
About the Authors
About the Reviewers
Preface
Index

Query syntax


Solr's query syntax is Lucene's syntax with a couple of additions that will be pointed out explicitly. What Solr/Lucene does is parse a query string using the rules outlined in this section to construct an internal query object tree. The existence of this feature (which is easy to take for granted) allows you or a user to express much more interesting queries than just AND-ing or OR-ing terms specified through q.op. The syntax that is discussed in this chapter can be thought of as the full Solr/Lucene syntax. There are no imposed limitations. If you do not want users to have this full expressive power (perhaps because they might unintentionally use this syntax and it either won't work or an error will occur), then you can choose an alternative with the defType query parameter. This defaults to lucene, but can be set to dismax, which is a reference to the DisjunctionMax parser. The parser and this mechanism in general will be discussed in the next chapter.

In the following examples...