Created
August 21, 2018 20:24
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| const { connectSession } = require("rxq"); | |
| const { concat } = require("rxjs"); | |
| const { switchMap, shareReplay, take, tap } = require("rxjs/operators"); | |
| const config = { | |
| host: "localhost", | |
| port: 19076 | |
| }; | |
| // Engine Session | |
| const session = connectSession(config); | |
| // Create and open doc | |
| const doc$ = session.global$.pipe( | |
| switchMap(h => | |
| h | |
| .ask("CreateApp", "RussianTweets.qvf") | |
| .pipe(switchMap(() => h.ask("OpenDoc", "RussianTweets.qvf"))) | |
| ), | |
| shareReplay(1) | |
| ); | |
| // Create connection | |
| const createConnection$ = doc$.pipe( | |
| switchMap(h => | |
| h.ask("CreateConnection", { | |
| qName: "data", | |
| qConnectionString: "/data", | |
| qType: "folder" | |
| }) | |
| ), | |
| take(1) | |
| ); | |
| // Create load script | |
| const script = ` | |
| Load * | |
| FROM [lib://data/IRA_tweets_combined.csv] | |
| (txt, utf8, embedded labels, delimiter is ','); | |
| `; | |
| const setScript$ = doc$.pipe( | |
| switchMap(h => h.ask("SetScript", script)), | |
| take(1) | |
| ); | |
| let startTime; | |
| // Do reload | |
| const doReload$ = doc$.pipe( | |
| tap(() => { | |
| console.log("started reload"); | |
| startTime = Date.now(); | |
| }), | |
| switchMap(h => h.ask("DoReload")), | |
| tap(() => console.log("reloaded")), | |
| tap(() => { | |
| console.log(Date.now() - startTime); | |
| }), | |
| take(1) | |
| ); | |
| // Do save | |
| const doSave$ = doc$.pipe( | |
| switchMap(h => h.ask("DoSave")), | |
| tap(() => console.log("saved")), | |
| take(1) | |
| ); | |
| // Execute the chain | |
| concat(createConnection$, setScript$, doReload$, doSave$).subscribe( | |
| () => {}, | |
| err => console.log(err) | |
| ); |
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