JSON-LD is perfect for ES indexing, as long as you use the "compact" form of representation.
http://www.w3.org/TR/json-ld-api/#compaction-algorithms Example: https://github.com/lanthaler/JsonLD/blob/master/Test/Fixtures/sample-compacted.jsonld This means you should use short field names and shorten IRIs to a prefix form. This gives a convenient mapping to ES field names (e.g. "dc:title" or "dc:creator"). The '@' fields can also be indexed and they do not control anything special in ES (some @id may be mapped to ES _id but for nested structures this does not match) I use my own RDF API and transform RDF graphs (so not only JSON-LD but also other formats like N-Triples and RDF/XML) into XContent using this method: https://github.com/xbib/xbib/blob/master/content/src/main/java/org/xbib/rdf/content/DefaultResourceContentBuilder.java I plan to extend this content building by interpreting rdf:type and rdf:list etc. to generate correct ES JSON objects and arrays. There is also an amount of work left to do for the plethora of XSD types in RDF literals or for language tags. This will be subsumed into an RDF input/output plugin for an ES-based Linked Data Platform http://www.w3.org/TR/ldp/ but there is no ETA yet. Jörg On Fri, Sep 26, 2014 at 5:08 AM, Lukáš Vlček <lukas.vl...@gmail.com> wrote: > Hi, > > I think you will have to preprocess documents on your side first and then > push into ES individually (you can push in batch). > > As a side note, I would say json-ld is quite low level serialization od > RDF data IMO not optimal for ES indexing. May be better would be to find > some RDF-OOM tool and have your RDF documents mapped to Java POJOs and > serialize POJOs into JSONs instead (you can use Jackson library for that > for example). This will give you better control over whole RDF -> JSON > conversion process. > > Regards, > Lukas > > On Thu, Sep 25, 2014 at 7:21 PM, abo <a...@datavolution.com> wrote: > >> Hello, >> >> I'm new to Elasticsearch, so forgive me if this is a basic question or if >> it's in some documentation that I haven't read... >> >> I am trying to load a json-ld file into ES. The json-ld file was >> generated from an RDF file, using Jena. The structure starts with: >> >> { >> "@graph" : >> >> followed by the individual "documents", each with: >> >> { >> "@id" : >> >> and a variable number of parameters in each. >> >> My question is how do I load this into ES and ensure that documents are >> individually referenced (as opposed to the entire json-ld file)? >> >> Do I need to doctor this json-ld file further in order to load it? >> >> Thanks for your help. >> >> -- abo >> >> -- >> You received this message because you are subscribed to the Google Groups >> "elasticsearch" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to elasticsearch+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elasticsearch/ec26bbe7-5bb1-4c50-96c4-8f586e1e0807%40googlegroups.com >> <https://groups.google.com/d/msgid/elasticsearch/ec26bbe7-5bb1-4c50-96c4-8f586e1e0807%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elasticsearch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/CAO9cvUYiqGoP5%3DpYkkhLzP17pLXAPN9sQVY9Oxn7AH4EY10xGA%40mail.gmail.com > <https://groups.google.com/d/msgid/elasticsearch/CAO9cvUYiqGoP5%3DpYkkhLzP17pLXAPN9sQVY9Oxn7AH4EY10xGA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAKdsXoHtOZmTcm1dYWKHxSfjNN%3D%3DqdoVwwvpg3DBEAcJz-xw5A%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
