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@khara/spring-data-rest-json-hal-client

spring-data-rest-json-hal-client

Preconfigured rest npm package that acts like JSON+HAL JS-Client for Spring Data REST backend.

'use strict';

const rest = require('rest');
const mime = require('rest/interceptor/mime');
const errorCode = require('rest/interceptor/errorCode');
const baseRegistry = require('rest/mime/registry');

const registry = baseRegistry.child();
registry.register('application/hal+json', require('rest/mime/type/application/hal'));
registry.register('application/schema+json', require('rest/mime/type/application/json'));
registry.register('application/json', require('rest/mime/type/application/json'));
registry.register('multipart/form-data', require('rest/mime/type/multipart/form-data'));
registry.register('text/plain', require('rest/mime/type/text/plain'));
registry.register('text/uri-list', require('./mime/type/text/uri-list'));

const client = rest
  .wrap(mime, {registry: registry})
  .wrap(errorCode);

module.exports = client;

How to use

First, import the needed operation (get, post, put, patch, del or client for backwards compatibility or more complicated operations) into your Javascript file where you are going to use it:

import {get} from '@khara/spring-data-rest-json-hal-client';

or

import {post} from '@khara/spring-data-rest-json-hal-client';

or

import {put} from '@khara/spring-data-rest-json-hal-client';

or

import {patch} from '@khara/spring-data-rest-json-hal-client';

or

import {del} from '@khara/spring-data-rest-json-hal-client';

or

import {client} from '@khara/spring-data-rest-json-hal-client';

(client is for backwards compatibility or for real complicated operations that are not covered in simple requests) or more than one

import {get, post, del} from '@khara/spring-data-rest-json-hal-client';

Then use it in the same fragment as in the following examples:

...
get('/api/users/all').then(successfulResponse => console.log(successfulResponse), error => console.error(error));
get('/api/users/all', {'Content-Type': 'application/json'}).then(successfulResponse => console.log(successfulResponse), error => console.error(error));
...
client(/* Your request type and its required paramenters */).then(/* What should be done after request gets responded */);
...

Examples

path is always required logically, but headers and entity are optional depending from your services.

GET

get('/some/path').then(successfulResponse => console.log(successfulResponse), error => console.error(error));

or with headers

get('/some/path', {'Content-Type': 'application/json'}).then(successfulResponse => console.log(successfulResponse), error => console.error(error));

or backwards compatible

client({method: 'GET', path: '/some/path'})
  .then(response => { console.log('Success:', response)}, response => { console.log('Error:', response)});
...
client({method: 'GET', path: '/some/path', headers: {'Content-Type': 'application/json'}})
  .then(response => { console.log('Success:', response)}, response => { console.log('Error:', response)});

POST

post('/some/path', {firstName: 'Max', lastName: 'Mustermann'}, {'Content-Type': 'application/json'})
  .then(
    successfulResponse => {console.log('Success:', successfulResponse)},
    errorResponse => {
      if (errorResponse.status.code === 403) {
        alert('ACCESS DENIED: You are not authorized to update!');
      } else if (errorResponse.status.code === 412) {
        alert('DENIED: Your copy is stale!');
      } else {
        console.log(errorResponse);
      }
    });

or backwards compatible

client({method: 'POST', path: '/some/path', entity: {firstName: 'Max', lastName: 'Mustermann'}, headers: {'Content-Type': 'application/json'}})
  .then(
    response => {console.log('Success:', response)},
    response => {
      if (response.status.code === 403) {
        alert('ACCESS DENIED: You are not authorized to update!');
      } else if (response.status.code === 412) {
        alert('DENIED: Your copy is stale!');
      } else {
        console.log(response);
      }
    });

PUT

put('/some/path', {firstName: 'Max', lastName: 'Mustermann'}, {'Content-Type': 'application/json'})
  .then(
    successfulResponse => {console.log('Success:', successfulResponse)},
    errorResponse => {
      if (errorResponse.status.code === 403) {
        alert('ACCESS DENIED: You are not authorized to update!');
      } else if (errorResponse.status.code === 412) {
        alert('DENIED: Your copy is stale!');
      } else {
        console.log(errorResponse);
      }
    });

or backwards compatible

client({method: 'PUT', path: '/some/path', entity: {firstName: 'Max', lastName: 'Mustermann'}, headers: {'Content-Type': 'application/json'}})
  .then(
    response => {console.log('Success:', response)},
    response => {
      if (response.status.code === 403) {
        alert('ACCESS DENIED: You are not authorized to update!');
      } else if (response.status.code === 412) {
        alert('DENIED: Your copy is stale!');
      } else {
        console.log(response);
      }
    });

DELETE

del('/some/path', {'Content-Type': 'application/json'})
  .then(response => {console.log("Success:", response)}, response =>
    {
      if (response.status.code === 403) {
        alert('ACCESS DENIED: You are not authorized to delete!');
      }
      else {
        console.log(response);
      }
    });

or backwards compatible

client({method: 'DELETE', path: '/some/path', headers: {'Content-Type': 'application/json'}})
  .then(
    response => {console.log('Success:', response)},
    response => {
      if (response.status.code === 403) {
        alert('ACCESS DENIED: You are not authorized to delete!');
      }
      else {
        console.log(response);
      }
    });