Another Lucene Eurocon is a history. That was a very intense two days, where the basic problem was: which of the three lectures go to. Sometimes the choice was very difficult, the only hope is that this year all the presentations were recorded and will soon be available on the web.
“Car sale application” – solr.ReversedWildcardFilter – let’s optimize wildcard queries (part 8)
“Car sale application” users started to use wildard queries more and more often. This fact forced us to think about wildcard queries optimization. solr.ReversedWildcardFilter comes to rescue us.
Near future plans
Surely you noticed a decreased activity of solr.pl. But this is not related to preparations for winter sleep. We are not bored also. The reason is the hot period in relation to the project deadline, which we perform within our professional work. In addition, the rest of our free time is occupied by two subjects which are mentioned below.
Lucene and Solr 3.4
Today, we can enjoy another version of Lucene and Solr – release numbered 3.4. In the newest version there are a few functionalities worth looking at.
Optimization – document cache
Data Import Handler – import from Solr XML files
So far, in previous articles, we looked at the import data from SQL databases. Today it’s time to import from XML files.
“Car sale application”– Result Grouping, two additional parameters description (part 7)
In the last “car sale application” related post we have described the result grouping functionality. Today I would like to show you how easily we can determine the groups amount and how to sort documents within every group.
Deep paging problem
Imagine the following problem – we have an application that expects Solr to return the results sorted on the basis of some field. Those results will be than paged in the GUI. However, if the person using the GUI application immediately selects the tenth, twentieth, or fiftieth page of search results there is a problem – the wait time. Is there anything we can do about this? Yes, we can help Solr a bit.
“Car sale application”– Result Grouping, let’s group some search results (part 6)
In today’s post we will try to add to our car sale application the new functionality, which allows us to group some search results. Let’s imagine a user who would like to search for “audi a4” advertisements and as a result get the results grouped by car’s year of production, with 2-3 results in every group. And how about some range grouping, for example mileage ranges? Today we will accept the challenge.
Lucene and Solr 3.3
Only a few weeks passed since the release of 3.2 version Lucene and Solr (change list) and today we have another release numbered 3.3. In the newest version there are a few functionalities worth looking at, especially when we talk about Solr.