73 lines
2.6 KiB
JavaScript
73 lines
2.6 KiB
JavaScript
import cds from '@sap/cds'
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export class OrdService extends cds.ApplicationService {
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init(){
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this.on('READ','documents', req => {
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let csn = cds.context?.model || cds.model
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return { ord: csn }
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})
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/**
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* Just an example to do something with id, if given.
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* Try it out with URLs like that:
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*
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* - http://localhost:4004/ord/v1/documents
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* - http://localhost:4004/ord/v1/documents/CatalogService
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* - http://localhost:4004/ord/v1/documents/CatalogService.Books
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* - http://localhost:4004/ord/v1/documents/CatalogService.Authors
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*/
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this.on('READ','csn', req => {
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let csn = cds.context?.model || cds.model
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let { id } = req.data
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if (id) csn = csn.definitions[id] || 'not in model!'
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return { id, csn }
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})
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/**
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* Just an example to serve arbitrary content with a function.
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* Try it out with URLs like that:
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*
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* - http://localhost:4004/ord/v1/api?service=CatalogService
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* - http://localhost:4004/ord/v1/api?service=CatalogService&format=edmx
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* - http://localhost:4004/ord/v1/api?service=CatalogService&format=edmx-v2
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* - http://localhost:4004/ord/v1/api?service=CatalogService&format=openapi
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*/
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this.on('api', req => {
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let csn = cds.context?.model || cds.model
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let { service, format = 'csn' } = req.data
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let { res } = req.http
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if (format === 'csn') {
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if (!service) return res.send(csn)
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service = csn.services[service]
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return res.send({ definitions: [ service, ...service.entities ] .reduce ((all,e) => {
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let d = all[e.name] = {...e}
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delete d.projection // not part of the API
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delete d.query // not part of the API
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return all
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},{})})
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}
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let api = cds.compile(csn).to[format]({service})
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return res.send(api)
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})
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/**
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* Example how to register arbitrary express routes,
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* and map them to our service's interface.
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* Try it out with URLs like that:
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*
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* - http://localhost:4004/ord/v1/csn/CatalogService
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* - http://localhost:4004/ord/v1/edmx/CatalogService
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* - http://localhost:4004/ord/v1/openapi/CatalogService
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* - http://localhost:4004/ord/v1/asyncapi/CatalogService
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*
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* NOTE: we add cds.middlewares.before to the route, which gives us all
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* the context and auth handling, which is also available to CAP services.
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*/
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cds.app.get (`${this.path}/:api?/:service?`, cds.middlewares.before, req => {
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const { api, service } = req.params
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return this.api (service, api)
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})
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return super.init()
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}
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} |