April 2011
Beginner
148 pages
4h 15m
English
Content preview from Introduction to Search with SphinxBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 4. Basic Searching
Two principal stages of text searching are to specify what text to match, and then to put the result set of matches into the desired shape, which includes filtering, grouping, and ordering. In this chapter, we discuss everything that Sphinx offers to support these goals: legacy matching modes, full-text query syntax, and additional nonfull-text tools for processing result sets.
Matching Modes
In the beginning, there were keywords, and nothing but keywords, and no query syntax was supported, and Sphinx just matched all keywords, and that was good. But even in that innocent antediluvian age, diverse people were asking for various querying patterns, and ranking methods, and we heard them, and thus and so matching modes were cast upon Sphinx. And they were four, and accessible via SphinxAPI and its younger brother, SphinxSE they were.
Nowadays, matching modes are just a legacy. Even the very concept of a “matching mode” is already deprecated internally. But we still have to quickly cover them, as two out of three searching APIs (SphinxAPI and SphinxSE) support them and default to a certain legacy mode for compatibility reasons.
Legacy modes were a predefined combination of (very simple) query parsing rules, query-to-document matching rules, and a specific ranking method (called a ranker).
There are four legacy matching modes: ALL, ANY, PHRASE, and BOOLEAN.
You could switch between modes using the SetMatchMode() call in SphinxAPI. For instance, the following call ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.