Re: SolrJ and JSON in Solr -1.3

Ryan McKinley Mon, 15 Sep 2008 20:56:54 -0700

The solrj API does not care how data is passed around, the interfaceto use it is identical.

If you create a CommonsHttpSolrServer and don't set the parser, itwill by default use the javabin parser.


  SolrServer server = new CommonsHttpSolrServer(url);
  SolrQuery query = new SolrQuery();
  query.setQuery("*:*");
  QueryResponse rsp = server.query(query);
  SolrDocumentList docs = rsp.getResults();

Are you connecting to a 1.2 server? If not, there is no reason to usethe XMLResponseParser:

http://wiki.apache.org/solr/Solrj#head-12c26b2d7806432c88b26cf66e236e9bd6e91849

ryan


On Sep 15, 2008, at 11:40 PM, Julio Castillo wrote:

I guess I'm still confused on how to use the Binary response format.

I was looking for examples of SolrJ consumers of the responseobject, but

didn't find anything.
The only example I see listed on the documentation is uses the
XMLResponseParser as follows (excerpt):

CommonHttpSolrServer server = new CommonsHttpSolrServer(url);
Server.setParser(new XMLResponseParser());
SolrQuery query = new SolrQuery();
Query.setQuery("*:*");
QueryResponse rsp = server.query(query);
SolrDocumentList docs = rsp.getResults();

If I use a Binary format instead, do I still use the same steps toextract

the data?

thanks

** julio

-----Original Message-----
From: Jon Baer [mailto:[EMAIL PROTECTED]
Sent: Monday, September 15, 2008 1:11 PM
To: solr-user@lucene.apache.org
Subject: Re: SolrJ and JSON in Solr -1.3

From what I understand you don't have to select a thing, theSolrCore would

detect SolrJ and do it automatically(?) ...

44. SOLR-486: Binary response format, faster and smaller
    than XML and JSON response formats (use wt=javabin).
    BinaryResponseParser for utilizing the binary format via SolrJ
    and is now the default.
    (Noble Paul, yonik)

On Sep 15, 2008, at 2:40 PM, Julio Castillo wrote:

Jon,
Is the binary (javabin) format implied by selecting the
RawResponseParser? I guess I don't know what the javabin format is.

So you took a SolrDocumentList and converted it into a JSON Array?

Thanks

** julio

-----Original Message-----
From: Jon Baer [mailto:[EMAIL PROTECTED]
Sent: Sunday, September 14, 2008 9:01 PM
To: solr-user@lucene.apache.org
Subject: Re: SolrJ and JSON in Solr -1.3

Hmm am I missing something but isn't the real point of SolrJ to be
able to use the binary (javabin) format to keep it small / tight /

compressed? I have had to proxy Solr recently and found justthrowing

a SolrDocumentList as a JSONArray (via json.org libs) works pretty
well (YMMV).  I was just under the impression that the Java to Java
bridge was the best way to go ...

It would be nice to have util methods on the SolrDocumentList
(toJSON(), toXML(), etc) maybe?

- Jon

On Sep 14, 2008, at 11:14 PM, Erik Hatcher wrote:


On Sep 14, 2008, at 2:51 PM, Julio Castillo wrote:

What is the status of JSON support via SolrJ?


Requires a custom ResponseParser.  See SOLR-402 for a couple of
implementation ideas:

<https://issues.apache.org/jira/browse/SOLR-402>

Maybe this code is no longer current to trunk?

I want to be able to specify a parser such as the XMLResponseParser
on my SolrServer. What are my options?


Use SolrServer#setParser() for one of the above implementations.

I guess I could get an XML response and then convert it to JSON? I
rather not.


Ewww, don't do that.

There is a JIRA entry SOLR-402, but real resolution to it per the
comments that follow in the feature request.
https://issues.apache.org/jira/browse/SOLR-402


Did the RawResponseParser work for you?   If so, we can build that
into Solr trunk - +1.  I shoulda done that a while ago, sorry.  This
actually fits well with SOLR-620, in my nefarious plans to build a
web framework out of Solr ;)

        Erik

Re: SolrJ and JSON in Solr -1.3

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