Here's an example of how to create a Job Data API using different technologies: 1. Using Node.js and Express: ```javascript const express = require('express'); const router = express.Router(); // Sample job data let jobs = [ { id: 1, title: "Software Engineer", company: "Tech Corp", location: "San Francisco", description: "Full-stack developer position", salary: 120000, type: "Full-time" } ]; // GET all jobs router.get('/jobs', (req, res) => { res.json(jobs); }); // GET job by ID router.get('/jobs/:id', (req, res) => { const job = jobs.find(j => j.id === parseInt(req.params.id)); if (!job) return res.status(404).send('Job not found'); res.json(job); }); // POST new job router.post('/jobs', (req, res) => { const job = { id: jobs.length + 1, title: req.body.title, company: req.body.company, location: req.body.location, description: req.body.description, salary: req.body.salary, type: req.body.type }; jobs.push(job); res.status(201).json(job); }); // PUT update job router.put('/jobs/:id', (req, res) => { const job = jobs.find(j => j.id === parseInt(req.params.id)); if (!job) return res.status(404).send('Job not found'); job.title = req.body.title; job.company = req.body.company; job.location = req.body.location; job.description = req.body.description; job.salary = req.body.salary; job.type = req.body.type; res.json(job); }); // DELETE job router.delete('/jobs/:id', (req, res) => { const job = jobs.find(j => j.id === parseInt(req.params.id)); if (!job) return res.status(404).send('Job not found'); const index = jobs.indexOf(job); jobs.splice(index, 1); res.json(job); }); module.exports = router; ``` 2. Using Python and Flask: ```python from flask import Flask, jsonify, request app = Flask(__name__) jobs = [ { "id": 1, "title": "Software Engineer", "company": "Tech Corp", "location": "San Francisco", "description": "Full-stack developer position", "salary": 120000, "type": "Full-time" } ] # GET all jobs @app.route('/api/jobs', methods=['GET']) def get_jobs(): return jsonify(jobs) # GET job by ID @app.route('/api/jobs/', methods=['GET']) def get_job(job_id): job = next((job for job in jobs if job['id'] == job_id), None) if job is None: return jsonify({'error': 'Job not found'}), 404 return jsonify(job) # POST new job @app.route('/api/jobs', methods=['POST']) def create_job(): if not request.json: return jsonify({'error': 'Invalid data'}), 400 job = { 'id': len(jobs) + 1, 'title': request.json.get('title'), 'company': request.json.get('company'), 'location': request.json.get('location'), 'description': request.json.get('description'), 'salary': request.json.get('salary'), 'type': request.json.get('type') } jobs.append(job) return jsonify(job), 201 # PUT update job @app.route('/api/jobs/', methods=['PUT']) def update_job(job_id): job = next((job for job in jobs if job['id'] == job_id), None) if job is None: return jsonify({'error': 'Job not found'}), 404 job['title'] = request.json.get('title', job['title']) job['company'] = request.json.get('company', job['company']) job['location'] = request.json.get('location', job['location']) job['description'] = request.json.get('description', job['description']) job['salary'] = request.json.get('salary', job['salary']) job['type'] = request.json.get('type', job['type']) return jsonify(job) # DELETE job @app.route('/api/jobs/', methods=['DELETE']) def delete_job(job_id): job = next((job for job in jobs if job['id'] == job_id), None) if job is None: return jsonify({'error': 'Job not found'}), 404 jobs.remove(job) return jsonify(job) if __name__ == '__main__': app.run(debug=True) ``` 3. Using Java and Spring Boot: ```java @RestController @RequestMapping("/api") public class JobController { private List jobs = new ArrayList<>(); private AtomicLong idCounter = new AtomicLong(); @GetMapping("/jobs") public List getAllJobs() { return jobs; } @GetMapping("/jobs/{id}") public ResponseEntity getJobById(@PathVariable Long id) { Job job = jobs.stream() .filter(j -> j.getId().equals(id)) .findFirst() .orElse(null); if (job == null) { return ResponseEntity.notFound().build(); } return ResponseEntity.ok(job); } @PostMapping("/jobs") public ResponseEntity createJob(@RequestBody Job job) { job.setId(idCounter.incrementAndGet()); jobs.add(job); return ResponseEntity.status(HttpStatus.CREATED).body(job); } @PutMapping("/jobs/{id}") public ResponseEntity updateJob(@PathVariable Long id, @RequestBody Job jobDetails) { Job job = jobs.stream() .filter(j -> j.getId().equals(id)) .findFirst() .orElse(null); if (job == null) { return ResponseEntity.notFound().build(); } job.setTitle(jobDetails.getTitle()); job.setCompany(jobDetails.getCompany()); job.setLocation(jobDetails.getLocation()); job.setDescription(jobDetails.getDescription()); job.setSalary(jobDetails.getSalary()); job.setType(jobDetails.getType()); return ResponseEntity.ok(job); } @DeleteMapping("/jobs/{id}") public ResponseEntity deleteJob(@PathVariable Long id) { Job job = jobs.stream() .filter(j -> j.getId().equals(id)) .findFirst() .orElse(null); if (job == null) { return ResponseEntity.notFound().build(); } jobs.remove(job); return ResponseEntity.ok(job); } } @Data class Job { private Long id; private String title; private String company; private String location; private String description; private Double salary; private String type; } ``` These examples provide basic CRUD operations for a job listing API. You can enhance them by: 1. Adding input validation 2. Implementing authentication and authorization 3. Adding database integration 4. Including search and filtering capabilities 5. Adding pagination 6. Implementing rate limiting 7. Adding documentation (e.g., Swagger/OpenAPI) 8. Including error handling middleware 9. Adding logging 10. Implementing caching Example API endpoints: ``` GET /api/jobs - Get all jobs GET /api/jobs/:id - Get specific job POST /api/jobs - Create new job PUT /api/jobs/:id - Update existing job DELETE /api/jobs/:id - Delete job ``` You might also want to add additional endpoints for: ``` GET /api/jobs/search?q=keyword - Search jobs GET /api/jobs/company/:companyId - Get company's jobs GET /api/jobs/location/:location - Get jobs by location ```

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