In order to test /api/query we need to maintain the preceding state of the server to make useful queries:

$ # Querying for "apple" 
 
$ curl -LX POST -d '["apple"]' localhost:9090/api/query | jq    
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current        
                                 Dload  Upload   Total   Spent    Left  Speed          
100   202  100   193  100     9    193      9  0:00:01 --:--:--  0:00:01 40400         
{                                           
  "count": 2,                               
  "data": [                                 
    {                                       
      "doc_id": "Book 1",                   
      "doc_score": 2,                       
      "token_indices": [                    
        {                                   
          "Index": 0,                       
          "LIndex": 0                       
        },                                  
        {                                   
          "Index": 0,                       
          "LIndex": 1                       
        }                                   
      ]                                     
    },                                      
    {                                       
      "doc_id": "Book 3",                   
      "doc_score": 1,                       
      "token_indices": [                    
        {                                   
          "Index": 0,                       
          "LIndex": 0                       
        }                                   
      ]                                     
    }                                       
  ]                                         
} 
 
$ # Querying for "cake" 

$ curl -LX POST -d '["cake"]' localhost:9090/api/query | jq                                                                                             
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current        
                                 Dload  Upload   Total   Spent    Left  Speed          
100   201  100   193  100     8    193      8  0:00:01 --:--:--  0:00:01 33500         
{                                           
  "count": 2,                               
  "data": [                                 
    {                                       
      "doc_id": "Book 3",                   
      "doc_score": 2,                       
      "token_indices": [                    
        {                                   
          "Index": 0,                       
          "LIndex": 1                       
        },                                  
        {                                   
          "Index": 0,                       
          "LIndex": 2                       
        }                                   
      ]                                     
    },                                      
    {                                       
      "doc_id": "Book 2",                   
      "doc_score": 1,                       
      "token_indices": [                    
        {                                   
          "Index": 0,                       
          "LIndex": 1                       
        }                                   
      ]                                     
    }                                       
  ]                                         
}