SOLR 4.2 features: Rest API to fetch SOLR schema, fields etc in JSON

Most f the SOLR business logic developers end up parsing solr schema with Luke request.
 & parsing the SOLR response structures etc in their logic.
 If you are a pure JSON geek, this aspect turn off.

 However starting with Solr 4.2 onwards, now SOLR supports
 REST API to request the the schema in json format.
Not only entire schema file, one can request, just few fields or field types,
dynamic fields, copy fields etc.
Wish they support wild cards. May be for  future.

For now this is solid beginning.

 Entier schema
 http://localhost:8983/solr/collection1/schema?wt=json 

Request price field:
 http://localhost:8983/solr/collection1/schema/fields/price?wt=json

 Request dynamic field ending with _I 
http://localhost:8983/solr/collection1/schema/dynamicfields/*_i?wt=json

 Request data field type.
 http://localhost:8983/solr/collection1/schema/fieldtypes/date?wt=json

Old  Style:

 LukeRequest request = new LukeRequest();
request.setShowSchema(true);
 request.setMethod(METHOD.GET);
LukeResponse response = request.process(getServer());
if(response != null && response.getFieldInfo() != null)
{ Map fieldInfoMap = response.getFieldInfo(); 
  Set fieldkeys = fieldInfoMap.keySet();
  for (String fieldKey : fieldkeys) { 
       ////do your stuff
  }
 } }