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Posted to solr-user@lucene.apache.org by MitchK <mi...@web.de> on 2010/07/28 13:54:14 UTC
SolrJ Response + JSON
Hello community,
I need to transform SolrJ - responses into JSON, after some computing on
those results by another application has finished.
I can not do those computations on the Solr - side.
So, I really have to translate SolrJ's output into JSON.
Any experiences how to do so without writing your own JSON-writer?
Thank you.
- Mitch
--
View this message in context: http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
Sent from the Solr - User mailing list archive at Nabble.com.
Re: SolrJ Response + JSON
Posted by MitchK <mi...@web.de>.
Hi,
as I promised, I want to give a feedback for transforming SolrJ's output
into JSON with the package from json.org (the package was the json.org's
one):
I need to make a small modification to the package, since they store the
JSON-key-value-pairs in a HashMap, I changed this to a LinkedHashMap to
make sure that the order of the retrived values is the same order as
they were inserted in the map.
The result looks very, very pretty.
It was very easy to transform the SolrJ's output into the desired
JSON-format and I can add now whatever I want to the response.
Kind regards,
- Mitch
Re: SolrJ Response + JSON
Posted by Mats Bolstad <ma...@stud.ntnu.no>.
What I meant is that GSON do not wrap the response as follows:
{
"responseHeader":{
"status":0,
"QTime":x},
"response":{"numFound":x,"start":0,"docs":[
{
/* docs */
}]
},
"facet_counts":{
"facet_queries":{},
"facet_fields":{},
"facet_dates":{}}}
If you care to preserve this format/pattern/whatever, you would need
to insert the JSON produced by GSON into such a body, and generate the
other attributes yourself.
That might not be needed, nor difficult to implement. BUT it's not
done out-of-the-box :)
For the application I'm developing I have a similar concern. I want to
do some authorizing and removing/adding content on the docs before I
send them off to the user. As I've already invested a lot of time
developing client-side code I want to preserve the exact same JSON
format.
Mats Bolstad
On Thu, Jul 29, 2010 at 12:40 PM, Mitch Köhler <mi...@web.de> wrote:
> Hi Mat,
>
> sounds very interesting, because it seems to be so easy.
> You say, that this could comply with Solr's JSON-format.
> What are your experiences regarding the differences? I mean, JSON is a
> standard,
> so what can be different?
>
> Thank you!
> - Mitch
>
> Am 29.07.2010 09:42, schrieb Mats Bolstad:
>>
>> If you don't mind your JSON format complying with the one Solr uses,
>> you could use GSON.
>>
>> SolrQuery solrQuery = new SolrQuery("your query");
>> QueryResponse response = server.query(solrQuery);
>> List beans = response.getBeans(YourObject.class);
>> // some computing ...
>> GSON gson = new GSON();
>> String json = gson.toJSON(beans);
>>
>> Mats Bolstad
>>
>>
>> On Wed, Jul 28, 2010 at 1:54 PM, MitchK<mi...@web.de> wrote:
>>
>>>
>>> Hello community,
>>>
>>> I need to transform SolrJ - responses into JSON, after some computing on
>>> those results by another application has finished.
>>>
>>> I can not do those computations on the Solr - side.
>>>
>>> So, I really have to translate SolrJ's output into JSON.
>>>
>>> Any experiences how to do so without writing your own JSON-writer?
>>>
>>> Thank you.
>>> - Mitch
>>> --
>>> View this message in context:
>>> http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
>>> Sent from the Solr - User mailing list archive at Nabble.com.
>>>
>>>
>>
>>
>
>
Re: SolrJ Response + JSON
Posted by Mitch Köhler <mi...@web.de>.
Hi Mat,
sounds very interesting, because it seems to be so easy.
You say, that this could comply with Solr's JSON-format.
What are your experiences regarding the differences? I mean, JSON is a
standard,
so what can be different?
Thank you!
- Mitch
Am 29.07.2010 09:42, schrieb Mats Bolstad:
> If you don't mind your JSON format complying with the one Solr uses,
> you could use GSON.
>
> SolrQuery solrQuery = new SolrQuery("your query");
> QueryResponse response = server.query(solrQuery);
> List beans = response.getBeans(YourObject.class);
> // some computing ...
> GSON gson = new GSON();
> String json = gson.toJSON(beans);
>
> Mats Bolstad
>
>
> On Wed, Jul 28, 2010 at 1:54 PM, MitchK<mi...@web.de> wrote:
>
>> Hello community,
>>
>> I need to transform SolrJ - responses into JSON, after some computing on
>> those results by another application has finished.
>>
>> I can not do those computations on the Solr - side.
>>
>> So, I really have to translate SolrJ's output into JSON.
>>
>> Any experiences how to do so without writing your own JSON-writer?
>>
>> Thank you.
>> - Mitch
>> --
>> View this message in context: http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
>> Sent from the Solr - User mailing list archive at Nabble.com.
>>
>>
>
Re: SolrJ Response + JSON
Posted by Mats Bolstad <mb...@gmail.com>.
If you don't mind your JSON format complying with the one Solr uses,
you could use GSON.
SolrQuery solrQuery = new SolrQuery("your query");
QueryResponse response = server.query(solrQuery);
List beans = response.getBeans(YourObject.class);
// some computing ...
GSON gson = new GSON();
String json = gson.toJSON(beans);
Mats Bolstad
On Wed, Jul 28, 2010 at 1:54 PM, MitchK <mi...@web.de> wrote:
>
> Hello community,
>
> I need to transform SolrJ - responses into JSON, after some computing on
> those results by another application has finished.
>
> I can not do those computations on the Solr - side.
>
> So, I really have to translate SolrJ's output into JSON.
>
> Any experiences how to do so without writing your own JSON-writer?
>
> Thank you.
> - Mitch
> --
> View this message in context: http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>
Re: SolrJ Response + JSON
Posted by Ranveer <ra...@gmail.com>.
Rajani is right you can get response by passing wt=json. But I think if
you want to use solrj then
you will require to parse binary format data in json format or you can
use third party json parser.
regards
Ranveer
http://www.onlymyhealth.com
On Thursday 29 July 2010 09:55 AM, rajini maski wrote:
> Yeah right... This query will do it....
>
> http://localhost:8090/solr/select/?q=*:*&version=2.2&start=0&rows=10&indent=on&wt=json
>
> This will do your work... This is more liike using xsl transformation
> supported by solr..:)
>
> Regards,
> Rajani Maski
>
>
> On Wed, Jul 28, 2010 at 6:24 PM, Mark Allan<ma...@ed.ac.uk> wrote:
>
>
>> I think you should just be able to add&wt=json to the end of your query
>> (or change whatever the existing wt parameter is in your URL).
>>
>> Mark
>>
>>
>> On 28 Jul 2010, at 12:54 pm, MitchK wrote:
>>
>>
>>
>>> Hello community,
>>>
>>> I need to transform SolrJ - responses into JSON, after some computing on
>>> those results by another application has finished.
>>>
>>> I can not do those computations on the Solr - side.
>>>
>>> So, I really have to translate SolrJ's output into JSON.
>>>
>>> Any experiences how to do so without writing your own JSON-writer?
>>>
>>> Thank you.
>>> - Mitch
>>> --
>>> View this message in context:
>>> http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
>>> Sent from the Solr - User mailing list archive at Nabble.com.
>>>
>>>
>>>
>> --
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>>
>>
>>
>
Re: SolrJ Response + JSON
Posted by rajini maski <ra...@gmail.com>.
Yeah right... This query will do it....
http://localhost:8090/solr/select/?q=*:*&version=2.2&start=0&rows=10&indent=on&wt=json
This will do your work... This is more liike using xsl transformation
supported by solr..:)
Regards,
Rajani Maski
On Wed, Jul 28, 2010 at 6:24 PM, Mark Allan <ma...@ed.ac.uk> wrote:
> I think you should just be able to add &wt=json to the end of your query
> (or change whatever the existing wt parameter is in your URL).
>
> Mark
>
>
> On 28 Jul 2010, at 12:54 pm, MitchK wrote:
>
>
>> Hello community,
>>
>> I need to transform SolrJ - responses into JSON, after some computing on
>> those results by another application has finished.
>>
>> I can not do those computations on the Solr - side.
>>
>> So, I really have to translate SolrJ's output into JSON.
>>
>> Any experiences how to do so without writing your own JSON-writer?
>>
>> Thank you.
>> - Mitch
>> --
>> View this message in context:
>> http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
>> Sent from the Solr - User mailing list archive at Nabble.com.
>>
>>
>
> --
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.
>
>
Re: SolrJ Response + JSON
Posted by Mark Allan <ma...@ed.ac.uk>.
I think you should just be able to add &wt=json to the end of your
query (or change whatever the existing wt parameter is in your URL).
Mark
On 28 Jul 2010, at 12:54 pm, MitchK wrote:
>
> Hello community,
>
> I need to transform SolrJ - responses into JSON, after some
> computing on
> those results by another application has finished.
>
> I can not do those computations on the Solr - side.
>
> So, I really have to translate SolrJ's output into JSON.
>
> Any experiences how to do so without writing your own JSON-writer?
>
> Thank you.
> - Mitch
> --
> View this message in context: http://lucene.472066.n3.nabble.com/SolrJ-Response-JSON-tp1002024p1002024.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>
--
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.