PATCH: JSONResponseWriter JSON result wrapper function
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Key: SOLR-56
URL: http://issues.apache.org/jira/browse/SOLR-56
Project: Solr
Issue Type: Improvement
Components: search
Environment: Tested on macosx 10.4.8, JDK 1.5
Reporter: Bertrand Delacretaz
Priority: Minor
This patch adds a "json.wrf" parameter to add a wrapper function around the
JSON results, for example:
json.wrf = eatJason
search result = eatJason({"header":{"qtime":0},...}))
The result set is sent as a parameter to eatJason instead of being sent as a
plain data structure.
This is useful to work around the cross-site limitations of JSON, when a client
uses code like
var head = document.getElementsByTagName("head")[0];
script = document.createElement('script');
script.id = 'uploadScript';
script.type = 'text/javascript';
script.src =
"http://mysolrserver/solr/select?q=role:video&wt=json&json.wrf=eatJason";;
head.appendChild(script)
function eatJason(obj){
...process obj which is Solr's JSON result
}
However, I'm no javascript expert, and passing an arbitrary javascript function
name in the request parameters feels a bit weird...wondering if this might
enable some cross-site scripting scenarios?
But the technique is well-known apparently, see:
http://www.theurer.cc/blog/2005/12/15/web-services-json-dump-your-proxy/
and
http://www.xml.com/pub/a/2005/12/21/json-dynamic-script-tag.html
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