With MarkLogic’s SPARQL queries, we can bind a value to constrain the query. Using this capability, we can gather information about something of interest. But what if I want to query against multiple values? Let’s start with some sample data. ‘use strict’; declareUpdate(); const sem = require(“/MarkLogic/semantics”) const myPred = sem.iri(“myPredicate”); sem.rdfInsert([1, 2, 3, 4, […]
In my last post, I talked about using the bindings parameter of MarkLogic’s sem.sparql function to look for multiple values in a SPARQL query. It turns out that approach doesn’t work for SPARQL Update. I’ll use the same sample data as my previous post: ‘use strict’; declareUpdate(); const sem = require(“/MarkLogic/semantics”) const myPred = sem.iri(“myPredicate”); sem.rdfInsert([1, 2, 3, 4, […]
I just learned something the hard way, so I thought I’d share. The tl;dr is that sem.sparqlUpdate runs in a separate transaction by default, which means you need to be careful about document locks. (If your response is “well, duh”, then you may not need the rest of this post. If you’ve ever had a sem.sparqlUpdate request time out when it […]
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