Simple SOLR example code to index & search metadata

Roughly three years back, I did some a prototype to index/search unstructured content inside enterprise. At that time we are using Autonomy. So nobody cared. Basically all search engines does some kind of structured content searches & major focus on unstructured content i.e. PDF files to WS word document etc. So coming to the point, again I was asked to some prototyping. This time I am looking to solr framework because my C++ business tire makes requests to index/searches for content (mostly un structured content.) after downloading Solr, looking for some good examples. At the end, I started writing the following. I will port this kind of example with using CURL.

  protected URL solrUrl;
  public CommonsHttpSolrServer solr = null;

  public SolrServer startSolrServer() throws MalformedURLException,
  SolrServerException 
  {
     solr = new CommonsHttpSolrServer("http://localhost:8983/solr/"); 
     solr.setParser(new XMLResponseParser()); 

     return solr;
  }
   
   public TestQueryTool()
   {
          //will add more junk later
   }

 
   public static void main(String[] args)
   {
     
     TestQueryTool t = new TestQueryTool();   
     try
     {
            //1)start & work with existing SOLR instance
   t.startSolrServer();
 
   // 2)Now index content ( files later. metadata)
   t.indexBOAsDocument("uid1","bolt", "0001");
   t.indexBOAsDocument("uid2","nut", "0002");
   
   //3)now perform search
   t.performSearch("uid");

  } catch (MalformedURLException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (SolrServerException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
     

 }

  
 private void indexBOAsDocument(String uid, String id, String name)throws SolrServerException 
 {
  SolrInputDocument doc = new SolrInputDocument();
  
  doc.addField("id",  uid);
  doc.addField("part_name",  name);
  doc.addField("part_id", id);

  try {
   solr.add(doc);
   solr.commit();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }

 
 public void performSearch(String qstring) throws SolrServerException 
 {
  SolrQuery query = new SolrQuery();
  //query.setQuery( "*:*" );
  
  query.setQuery("id:uid* OR part_name:nut");
  
        query.addSortField( "part_name", SolrQuery.ORDER.desc);
  QueryResponse response = solr.query(query);
  SolrDocumentList docs = response.getResults();
  info("docs size is ="+docs.size());
  Iterator iter =docs.iterator();

     while (iter.hasNext()) {
       SolrDocument resultDoc = iter.next();

       String part_name = (String) resultDoc.getFieldValue("part_name");
       String id = (String) resultDoc.getFieldValue("id"); //id is the uniqueKey field
        // Now you got id, part_name. End of story
   }
       
      }