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Schesign json schema

Schesign allows you to build and host data designs. Data designs can be accessed through the API as a graph in JSON format. See schesign-js-api for more info on retrieving a graph.

This library converts this graph into JSON schema.

Install

npm install schesign-js-json-schema --save

Examples

Basic Usage

  import { generateFromClass } from 'schesign-js-json-schema'

  const graph = [
    {
      uid: 'https://www.schesign.com/u/my_user/my_design/0.0.1/class/class1',
      type: 'Class',
      label: 'Class1',
      propertyRefs: [
        {
          ref: 'https://www.schesign.com/u/my_user/my_design/0.0.1/property/a',
          cardinality: { minItems: 0, maxItems: 1 }
        },
        {
          ref: 'https://www.schesign.com/u/my_user/my_design/0.0.1/property/b',
          cardinality: { minItems: 1, maxItems: 1 }
        },
      ]
    },
    {
      uid: 'https://www.schesign.com/u/my_user/my_design/0.0.1/property/a',
      type: 'Property',
      label: 'a',
      range: {
        type: 'Text'
      }
    },
    {
      uid: 'https://www.schesign.com/u/my_user/my_design/0.0.1/property/b',
      type: 'Property',
      label: 'b',
      range: {
        type: 'Boolean'
      }
    }
  ]

  const schema = generateFromClass(
    graph,
    'https://www.schesign.com/u/my_user/my_design/0.0.1/class/class1'
  )

  console.log(schema)
  /*
    {
        "$schema": "http://json-schema.org/draft-04/schema#",
        "properties": {
          "a": {  "type": "string" },
          "b": { "type": "boolean"}
        },
        "required": ["b"],
        "type": "object"
    }
  */

Usage with schesign-js-api module

import { fetchGraph, util } from 'schesign-js-api'
import { generateFromClass } from 'schesign-js-json-schema'

const uid = util.createUid({
  ownerType: 'o',
  userOrOrg: 'examples',
  designName: 'example_online_store',
  versionLabel: '1.1.0',
  resourceType: 'class',
  classOrProperty: 'Product'
});

/*
  Creates the data design's uid with a convenience function
  https://www.schesign.com/o/examples/example_online_store/1.1.0/class/product
*/
console.log(uid);

var options = { uid: uid };

fetchGraph(options).then(json => {
  const schema = generateFromClass(json.graph, uid)
  console.log(schema)
}).catch(err => {
  console.log(err);
});

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