如何从JSON创建Mongoose模式

Question

I am new into mongodb, nodejs and mongooseJS. Lately, I have been trying to create a mongoose schema for my JSON.

{
  "endpoints":["a","z"],
  "poi":[{
  "location_name": "a",
  "latitude": " 10.1075702",
  "longitude": "76.345662",
  "distance" : "0.0"
}, {
  "location_name": "b",
  "latitude": "10.110199",
  "longitude": "76.3489361",
  "distance" : "2.0"
}, {
  "location_name": "c",
  "latitude": "10.1197471",
  "longitude": "76.342873",
   "distance" : "3.1"
}, {
  "location_name": "d",
  "latitude": "10.1254479",
  "longitude": "76.3332626",
   "distance" : "4.4"
}, {
  "location_name": "e",
  "latitude": "10.1443277",
  "longitude": "76.2566017",
  "distance" : "13.9"
}, {
  "location_name": "f",
  "latitude": "10.1487145",
  "longitude": "76.2441114",
   "distance" : "15"
}, {
  "location_name": "z",
  "latitude": "10.145578",
  "longitude": "76.2317077",
  "distance" : "16.9"
}]
}

This is my JSON file that I have. I tried using generate-schema from https://github.com/nijikokun/generate-schema which gave me the following output

 { 
endpoints:[ 'String' ], 
poi: [ 'String' ]
 }

I used this and when I tested it using Postman from chrome webstore, I was not able to retrieve the complete JSON from the database using the get request. Neither I was able to run a post request successfully.

Recently I tried using JSON schema instead of the mongoose schema using

mongoose.Schema("JSON Schema')

When I try using JSON Schema I am able to retrieve the data from the mongodb collections using the GET request but I'm not able to POST data correctly with the JSON Schema

I was also thinking about dropping nodejs and redeveloping the webservice in java and mongodb. If I try to use Java web service for interacting with mongodb, is it going to affect the performance of my web app?

Answer 1

You can use Generate Schemas module to do this task.

var jsonObject={
var GenerateSchema = require('generate-schema')
var schema = GenerateSchema.json('Product',jsonObject);

console.log(JSON.stringify(schema))

Since you have two main properties one is endpoints and other poi

And here is the output schema of your JSON object

    {
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Product",
  "type": "object",
  "properties": {
    "endpoints": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "poi": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "location_name": {
            "type": "string"
          },
          "latitude": {
            "type": "string"
          },
          "longitude": {
            "type": "string"
          },
          "distance": {
            "type": "string"
          }
        }
      }
    }
  }
}

Suggestion: You will get some unwanted field and you have to modify it. So I think you should create custom schema on the basis of your object, which would be better for you

You can also get other references here