Hi,
Ahmet, Jack, Thanks for the pointers.
My requirement is, I would not be having the facets or sort fields or its
order as static.
For example suppose for a particular scenario I need to show only 2 facets
and sort on only one field.
For another scenario I may have to do facet.field for a different set of
fields and sort on again another set of fields.
Consider there are some sort of user preferences for each query.
So I think I may not be able to store my parameters like facet fields, sort
fields etc preconfigured in solrconfig.xml.
Please correct me if I am wrong.
Based on Ahmet's reply I created a CustomSearchComponent with help from the
net.
I created a dummy RH and added this as the searchComponent in
SolrConfig.xml:-
<requestHandler name="/myexample" class="solr.SearchHandler">
<arr name="components">
<str>exampleComponent</str>
</arr>
</requestHandler>
<searchComponent name="exampleComponent"
class="org.ExampleSearchComponent">
</searchComponent>
..invoked it using:-
http://localhost:8984/solr/myexample?q=*:*
The o/p gave me that one record will ALL FIELDS fully in xml format.
*It did not give only the "id" field which was what I was trying as a test!*
my code for the custom Search Component shared below please:-
Before that I have these queries:-
1. In my code,Instead of hitting the server AGAIN using SolrJ to enforce my
params (just "fl" newly added) , is there any way the query can be
executed with my additional fl param.
2. Just adding the input additional params is what I want to achieve. I
dont want to do anything on the response.
Currently I am doing it:-
--> builder.rsp.add( "example", doc.getFields());
Note:- I removed this line and again when I ran this query NO OUTPUT came.
So suppose I used it along with any of my existing RH by adding in
searchcomponent, I want it to only affect the input querying by adding
additional params and should not influence the rendering of the o/p in any
way. How do I add this to one of my existing Request Handlers only to
influence the input for querying and NOT o/p format in any way.
3. Why is all fields being rendered for the one doc I selected to come back
in my "example" variable, when I am actually restricting the fields to
only &fl=id
Any help is greatly appreciated.
My console shows the following ie ... looks like the filtering happens but
what is /select doing here when I am calling
/myexample:-
154956 [qtp1856056345-18] INFO org.apache.solr.core.SolrCore û
[collection1] w
ebapp=/solr path=*/select* params=*{q=*:*&fl=id&wt=xml&version=2.2}* hits=4
status=0
QTime=16
[stored,indexed,tokenized,omitNorms,indexOptions=DOCS_ONLY,numericType=INT,numer
icPrecisionStep=16<id:205546699>,
org.apache.lucene.document.LazyDocument$LazyFi
eld@38585de9, org.apache.lucene.document.LazyDocument$LazyField@1b3edb96,
org.ap
ache.lucene.document.LazyDocument$LazyField@9692beb,
org.apache.lucene.document.
LazyDocument$LazyField@683f4dad,
org.apache.lucene.document.LazyDocument$LazyFie
ld@12f2e256, org.apache.lucene.document.LazyDocument$LazyField@7ffd69f5]
155080 [qtp1856056345-21] INFO org.apache.solr.core.SolrCore û
[collection1] w
ebapp=/solr path=*/myexample* params={*q=*:**} status=0 QTime=299
rough java class:-
public class ExampleSearchComponent extends SearchComponent {
@Override
public void prepare(ResponseBuilder builder) throws IOException {
}
@Override
public void process(ResponseBuilder builder) throws IOException {
SolrParams params = builder.req.getParams();
String q = params.get(CommonParams.Q);
ModifiableSolrParams params1 = new ModifiableSolrParams(params);
params1.add("fl", "id");
System.out.println("q is "+q);
QueryResponse response=null;
HttpSolrServer server = new HttpSolrServer( "
http://localhost:8984/solr/collection1"; );
server.setParser(new XMLResponseParser());
try{
response = server.query( params1 );
}catch(Exception e){}
SolrDocumentList results = new SolrDocumentList();
SolrIndexSearcher searcher = builder.req.getSearcher();
Document doc=searcher.doc(0);
System.out.println(doc.getFields());
builder.rsp.add( "example", doc.getFields());
}
@Override
public String getDescription() {
return "ExampleSearchComponent";
}
@Override
public String getSource() {
return "";
}
//@Override
public String getSourceId() {
return "";
}
@Override
public String getVersion() {
return "1.0";
}
}
Thanks and Rgds,
Mark.
On Sat, Jan 9, 2016 at 12:38 PM, Jack Krupansky <jack.krupan...@gmail.com>
wrote:
> Sure, you CAN do this, but why would you want to? I mean, what exactly is
> the motivation here? If you truly have custom code to execute, fine, but if
> all you are trying to do is set parameters, a custom request handler is
> hitting a tack with a sledge hammer. For example, why isn't setting
> defaults in solrconfig sufficient for your needs? At least then you can
> change parameters with a simple text edit rather than require a Java build
> and jar deploy.
>
> Can you share what some of the requirements are for your custom request
> handler, including the motivation? I'd hate to see you go off and invest
> significant effort in a custom request handler when simpler techniques may
> suffice.
>
> -- Jack Krupansky
>
> On Sat, Jan 9, 2016 at 12:08 PM, Ahmet Arslan <iori...@yahoo.com.invalid>
> wrote:
>
> > Hi Mark,
> >
> > Yes this is possible. Better, you can use a custom SearchComponent for
> > this task too.
> > You retrieve solr parameters, wrap it into ModifiableSolrParams. Add
> extra
> > parameters etc, then pass it to underlying search components.
> >
> > Ahmet
> >
> >
> > On Saturday, January 9, 2016 3:59 PM, Mark Robinson <
> > mark123lea...@gmail.com> wrote:
> > Hi,
> > When I initially fire a query against my Solr instance using SOLRJ I pass
> > only, say q=*:*&fq=(myfield:vaue1).
> >
> > I have written a custom RequestHandler, which is what I call in my SolrJ
> > query.
> > Inside this custom request handler can I add more query params like say
> the
> > facets etc.. so that ultimately facets are also received back in my
> results
> > which were initially not specified when I invoked the Solr url using
> SolrJ.
> >
> > In short, instead of constructing the query dynamically initially in
> SolrJ
> > I want to add the extra query params, adding a jar in Solr (a java code
> > that will check certain conditions and dynamically add the query params
> > after the initial SolrJ query is done). That is why I thought of a custom
> > RH which would help we write a java class and deploy in Solr.
> >
> > Is this possible. Could some one get back please.
> >
> > Thanks!
> > Mark.
> >
>
