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From Anshum Gupta <>
Subject Re: Creating a SolrJ Data Service to send JSON to Solr
Date Wed, 17 Aug 2016 00:16:58 GMT
I would also suggest sending the JSON directly to the JSON end point, with
the mapping :

On Tue, Aug 16, 2016 at 4:43 PM Alexandre Rafalovitch <>

> Why do you need a POJO? For Solr purposes, you could just get the
> field names from schema and use those to map directly from JSON to the
> 'addField' calls in SolrDocument.
> Do you need it for non-Solr purposes? Then you can search for generic
> Java dynamic POJO generation solution.
> Also, you could look at creating a superset rather than common-subset
> POJO and then ignore all unknown fields on Solr side by adding a
> dynamicField that matches '*' with everything (index, store,
> docValues) set to false.
> Regards,
>    Alex.
> ----
> Newsletter and resources for Solr beginners and intermediates:
> On 17 August 2016 at 02:49, Jennifer Coston
> <> wrote:
> >
> > Hello,
> > I am trying to write a data service using SolrJ that will allow me to
> > accept JSON through a REST API, create a Solr document ,and write it to
> > multiple different Solr cores (depending on the core name specified). The
> > problem I am running into is that each core is going to have a different
> > schema. My current code has the common fields between all the schemas in
> a
> > data POJO which I then walk and set the values specified in the JSON to
> the
> > Solr Document. However, I don’t want to create a different class for each
> > schema to process the JSON and convert it to a Solr Document. Is there a
> > way to process the extra JSON fields that are not common between the
> > schemas and add them to the Solr Document, without knowing what they are
> > ahead of time? Is there a way to convert JSON to a Solr Document without
> > having to use a POJO?  An alternative I was looking into is to use the
> > SolrClient to get the schema fields, create a POJO, walk that POJO to
> > create a Solr Document and then add it to Solr but, it doesn’t seem to be
> > possible to obtain the fields this way.
> >
> > I know that the easiest way to add JSON to Solr would be to use a curl
> > command and send the JSON directly to Solr but this doesn’t match our
> > requirements, so I need to figure out a way to perform the same operation
> > using SolrJ. Any other ideas or suggestions would be greatly appreciated!
> >
> > Thank you,
> >
> > -Jennifer

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