I am looking to optimize my JSON file by removing any superfluous JSON objects using JavaScript

Question

I am looking to optimize my JSON file by removing any superfluous JSON objects using JavaScript

I have a JSON file with 10,000 lines. Within one array object, there are some unnecessary JSON objects that I need to remove. Despite trying numerous methods, I have been unsuccessful in achieving this. Here is a snippet from the JSON file:

[
  {
    "product_id": "easybridge",
    "errors": []
  },
  {
    "product_id": "learningstudio",
    "errors": []
  },
  // More product_id and errors objects follow...

What I specifically require is:

{
    "product_id": "equella",
    "errors": [
      {
        "property": "instance.test_ids[1]",
        "message": "requires property \"maintenance\"",
      }
 }

If the errors JSON array is not empty, even the above JSON is unnecessary for me. How can I effectively remove the "schema" JSON objects and other redundant elements, especially the "schema" object, using JavaScript or Java? Any assistance would be greatly appreciated.

javascript java arrays json

Answer 1

Answer №1

Iterate through the array, examine each object, and generate a new array by extracting the necessary data.

For example, assuming you are not interested in objects with empty arrays of errors and that you do not need the schema:

let newJSON = [];

//Assuming the json variable contains the parsed JSON file you provided.
for (let element of json) {

    //Ensure there is at least one error
    if (element.errors.length > 0) {

        //Create a new object
        let newObj = {
            "product_id" : element.product_id,
            "errors" : []
        };

        //Include each error

        for (let error of element.errors) {

            //Only include the essential information
            newObj.errors.push({
                "property" : error.property,
                "message" : error.message
            });
        }

        //Add the object to our new JSON array
        newJSON.push(newObj);
    }
}

//newJSON now holds your processed JSON data

Answer 2

Iterate through the array, examine each object, and generate a new array by extracting the necessary data.

For example, assuming you are not interested in objects with empty arrays of errors and that you do not need the schema:

let newJSON = [];

//Assuming the json variable contains the parsed JSON file you provided.
for (let element of json) {

    //Ensure there is at least one error
    if (element.errors.length > 0) {

        //Create a new object
        let newObj = {
            "product_id" : element.product_id,
            "errors" : []
        };

        //Include each error

        for (let error of element.errors) {

            //Only include the essential information
            newObj.errors.push({
                "property" : error.property,
                "message" : error.message
            });
        }

        //Add the object to our new JSON array
        newJSON.push(newObj);
    }
}

//newJSON now holds your processed JSON data

Answer 3

Answer №2

A simple solution could look like this:

const data = [{
  "id": "item1",
  "name": "apple",
  "category": []
},
{
  "id": "item2",
  "name": "orange",
  "category": []
},
{
  "id": "item3",
  "name": "banana",
  "category": [{
    "type": "organic"
  }]
}];

const updatedData = data.map((entry) => {
  entry.category = entry.category.map((cat) => {
    return {type: cat.type};
  });
  return entry;  
});

console.log(updatedData);

Answer 4

A simple solution could look like this:

const data = [{
  "id": "item1",
  "name": "apple",
  "category": []
},
{
  "id": "item2",
  "name": "orange",
  "category": []
},
{
  "id": "item3",
  "name": "banana",
  "category": [{
    "type": "organic"
  }]
}];

const updatedData = data.map((entry) => {
  entry.category = entry.category.map((cat) => {
    return {type: cat.type};
  });
  return entry;  
});

console.log(updatedData);

Answer 5

Answer №3

Utilizing map along with destructuring assignment enables you to selectively capture desired properties

let json = [{"product_id": "equella", "errors": [{"property": "instance.test_ids[1]","message": "requires property \"maintenance\"", 'xyz': 'not needed', 'useless': 'not needed'},{'xyz': 'not needed'}]},]
 
let op = json.map(({product_id,errors}) =>{ 
 let { property, message } = errors[0]
 return { product_id, errors: {property,message}}
})
 
 console.log(op)

Answer 6

Utilizing map along with destructuring assignment enables you to selectively capture desired properties

let json = [{"product_id": "equella", "errors": [{"property": "instance.test_ids[1]","message": "requires property \"maintenance\"", 'xyz': 'not needed', 'useless': 'not needed'},{'xyz': 'not needed'}]},]
 
let op = json.map(({product_id,errors}) =>{ 
 let { property, message } = errors[0]
 return { product_id, errors: {property,message}}
})
 
 console.log(op)

I am looking to optimize my JSON file by removing any superfluous JSON objects using JavaScript

Answer №1

Answer №2

Answer №3

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