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https://issues.apache.org/jira/browse/SOLR-7576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Noble Paul updated SOLR-7576:
-----------------------------
Description:
Solr now support dynamic loading (SOLR-7073) of components and it is secured in
SOLR-7126
We can extend the same functionality with JS as well
the handler {{/js}} is implicitly registered
To make this work
* Solr should be started with {{-Denable.js.loading=true}}
* The javascript must be loaded to the {{.system}} collection using the blob
store API
* Configure the requesthandler with the JS blob name and version
* Sign the javascript and pass the signature in a param called {{_sig}}
The {{JSRequestHandler}} is implicitly defined and it can be accessed by
hitting {{/js/<jsname>/<version>}}
Steps for developing scripts
1
sample programs
1) writes a val to output
{code:javascript}
//empty line
$.response().add('testkey','Test Val');
{code}
2) manipulate the output to add an extra field to each doc
{code}
//empty line
var l = [];
$.query({
q: '*:*',
qt: '/select',
start:0,
}).forEach('response', function(doc) {
doc.put('script', 'Added this value');
l.push(doc);
});
$.response().add('alldocs', l);
{code}
3) stream through all the docs
{code:Javascript}
$.query({
q: '*:*',
qt: '/select',
start:0,
distrib:'false'
}).pipe('response', 'docs', function(doc) { // the pipe function is
executed right before the response writer and right after the transformers
if('IT'== doc.get('genre_s')) return
null;
doc.put('script', 'Added this value');
return doc;
});
{code}
was:
Solr now support dynamic loading (SOLR-7073) of components and it is secured in
SOLR-7126
We can extend the same functionality with JS as well
the handler {{/js}} is implicitly registered
To make this work
* Solr should be started with {{-Denable.js.loading=true}}
* The javascript must be loaded to the {{.system}} collection using the blob
store API
* Configure the requesthandler with the JS blob name and version
* Sign the javascript and pass the signature in a param called {{_sig}}
The {{JSRequestHandler}} is implicitly defined and it can be accessed by
hitting {{/js/<jsname>/<version>}}
sample programs
1) writes a val to output
{code:javascript}
//empty line
$.response().add('testkey','Test Val');
{code}
2) manipulate the output to add an extra field to each doc
{code}
//empty line
var l = [];
$.query({
q: '*:*',
qt: '/select',
start:0,
}).forEach('response', function(doc) {
doc.put('script', 'Added this value');
l.push(doc);
});
$.response().add('alldocs', l);
{code}
3) stream through all the docs
{code:Javascript}
$.query({
q: '*:*',
qt: '/select',
start:0,
distrib:'false'
}).pipe('response', 'docs', function(doc) { // the pipe function is
executed right before the response writer and right after the transformers
if('IT'== doc.get('genre_s')) return
null;
doc.put('script', 'Added this value');
return doc;
});
{code}
> Implement RequestHandler in Javascript
> --------------------------------------
>
> Key: SOLR-7576
> URL: https://issues.apache.org/jira/browse/SOLR-7576
> Project: Solr
> Issue Type: New Feature
> Reporter: Noble Paul
> Attachments: SOLR-7576.patch, SOLR-7576.patch
>
>
> Solr now support dynamic loading (SOLR-7073) of components and it is secured
> in SOLR-7126
> We can extend the same functionality with JS as well
> the handler {{/js}} is implicitly registered
> To make this work
> * Solr should be started with {{-Denable.js.loading=true}}
> * The javascript must be loaded to the {{.system}} collection using the blob
> store API
> * Configure the requesthandler with the JS blob name and version
> * Sign the javascript and pass the signature in a param called {{_sig}}
> The {{JSRequestHandler}} is implicitly defined and it can be accessed by
> hitting {{/js/<jsname>/<version>}}
> Steps for developing scripts
> 1
> sample programs
> 1) writes a val to output
> {code:javascript}
> //empty line
> $.response().add('testkey','Test Val');
> {code}
> 2) manipulate the output to add an extra field to each doc
> {code}
> //empty line
> var l = [];
> $.query({
> q: '*:*',
> qt: '/select',
> start:0,
> }).forEach('response', function(doc) {
> doc.put('script', 'Added this
> value');
> l.push(doc);
> });
> $.response().add('alldocs', l);
> {code}
> 3) stream through all the docs
> {code:Javascript}
> $.query({
> q: '*:*',
> qt: '/select',
> start:0,
> distrib:'false'
> }).pipe('response', 'docs', function(doc) { // the pipe function is
> executed right before the response writer and right after the transformers
> if('IT'== doc.get('genre_s')) return
> null;
> doc.put('script', 'Added this
> value');
> return doc;
> });
> {code}
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