Because Polish language analysis functionality is present in Lucene (and Solr) for some time I decided to take a look and compare it on the basis of upcoming Lucene and Solr 4.0.
Author: Rafał Kuć
Solr 3.6: CurrencyField
The incoming Solr 3.6 will bring us an interesting feature in the form of currency handling. Some may ask “What for ? We can just use float and we can use it for currency handling”. So let’s take a look at solr.CurrencyField which will be presented in Solr 3.6.
Use of cache=false and cost parameters
Simple photo search
Recently we had a change to help with a non-commercial project which included search as its part. One of the assumptions, although not the key ones, was the photo search functionality, so that the user could find the pictures fast and accurately. Because the search had to work with meta data of JPEG files, the idea was simple – use Apache Solr with Apache Tika.
What can we use Dismax tie parameter for?
Dismax query parser have been with Solr for a long time. Most of the time we use parameters like qf, pf or mm forgetting about a very useful parameter which allows us to control how the lower scoring fields are treated – about the tie parameter.
Document language identification
Solr 4.0: Realtime GET
The next functionality I decided to look at, from the upcoming Solr 4.0, is the so called “Realtime Get”. It allows you to see the data even though it was not yet added to the index, thus before the commit operation being sent to Solr. Let’s see how it works.
Explain.solr.pl beta version available
We are pleased to announce, that http://explain.solr.pl is now available for users. Please remember that this is a beta version and will be further developed. If you want to know more details please read the following blog post.
Do I have to look for maxBooleanClauses when using filters ?
One of the configuration variables we can find in the solrconfig.xml file is maxBooleanClauses, which specifies the maximum number of boolean clauses that can be combined in a single query. The question is, do I have to worry about it when using filters in Solr ? Let’s try to answer that question without getting into Lucene and Solr source code.
Solr 4.0: DocTransformers first look
In todays entry we will look at the next feature that will come with version 4.0 of Apache Solr. We will look at the functionality which enables us to modify the fields in Solr result list.