One of the new features in MarkLogic 6 is the ability to call out to C++ code to do Map/Reduce calculations. This lets you add any kind of aggregation function your project needs, in a highly performant way. You pass…
This morning, MarkLogic announced version 6 of the MarkLogic database. Lots of great stuff in this release (plenty of post material!). Let’s start with something simple, but very useful: copying data from one MarkLogic database to another with mlcp (MarkLogic…
A reader recently emailed me a question about an old post on the MarkLogic developer’s mailing list. The goal was to run a query such that an element’s value and an attribute on that element both matched. The problem was…
Before I can talk about data modeling, I need to quickly address something else. At MarkLogic, we often talk about how we can take data as-is and do great stuff with it. If we can do great stuff with data…
My posts have been sparse over the last several months. That’s because I’ve been working on a MarkLogic book. For reasons I’m not going to get into here, I no longer plan to finish that book. The good news is…
I have another reader question today, also from Amit. To summarize, he’s using the Search API and has set up a range constraint like so: Â <options xmlns=””> Â Â <constraint name=”date”> Â Â <range type=”xs:date” facet=”false”> Â Â Â Â Â Â <element ns=””…
Tonight’s post is based on a question from Amit, a reader: I am back again with a doubt. Now we know that the default algorithm used by Marklogic is “score-logtfidf” for the relevance calculation. Now in my project, this is…
Update: I got some feedback on this post that amounted to “Wha???” Rereading it, I see that I really went into the esoteric for this one. After spending some time dealing with a very specific problem, I posted the solution,…
The “directory creation” database setting is one of the first things I change for a new database. The default is “automatic”, but I switch it to “manual”, as I was taught by more experienced developers when I joined MarkLogic. The…
I just published an XQuery library to GitHub to convert lines of Comma Separated Value data to XML. That can probably be done more simply if you don’t care what the XML looks like, but I wanted to build templates so…