Video: Puas yog kev sau cov haujlwm uas tsim cov lus teb rau GraphQL cov lus nug?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Nyob rau hauv thiaj li yuav teb rau lus nug , ib tug schema yuav tsum muaj daws cov haujlwm rau txhua qhov chaw. Qhov no sau cov haujlwm hu ua "resolver map". Daim ntawv qhia no hais txog cov schema teb thiab hom rau a muaj nuj nqi.
Tom qab ntawd, koj sau cov lus nug hauv GraphQL li cas?
A GraphQL lus nug yog siv los nyeem lossis nqa cov txiaj ntsig thaum muaj kev hloov pauv sau los yog post qhov tseem ceeb.
Cia peb tsim ib daim ntawv thov yooj yim kom nkag siab cov lus nug sib txawv.
- Kauj ruam 1 - Kho cov ntaub ntawv Schema.
- Kauj ruam 2 - Kho kom raug neeg daws teeb meem.
- Kauj Ruam 3 - Tshaj Tawm Cov Lus Nug Sib txawv hauv GraphiQL.
Tsis tas li ntawd, GraphQL subscriptions siv rau dab tsi? Kev tso npe yog a GraphQL feature uas tso cai rau lub server xa cov ntaub ntawv rau nws cov neeg siv khoom thaum muaj xwm txheej tshwj xeeb tshwm sim. Kev tso npe feem ntau yog siv nrog WebSockets. Hauv qhov teeb tsa ntawd, tus neeg rau zaub mov tswj kev sib txuas ruaj khov rau nws cov neeg siv khoom.
Hauv qhov no, dab tsi yog qhov kev daws teeb meem?
Kev daws teeb meem txhais. Txhua daim teb ntawm txhua hom yog txhawb nqa los ntawm a muaj nuj nqi npe a daws . A daws yog a muaj nuj nqi uas daws tus nqi rau ib hom lossis teb hauv schema. Cov kev daws teeb meem tuaj yeem xa rov qab cov khoom lossis scalar xws li Strings, Numbers, Booleans, thiab lwm yam.
Kev thauj mus los twg Apollo siv los siv rau kev tso npe?
Qhov nrov tshaj plaws thauj rau GraphQL kev tso npe hnub no yog kev tso npe - thauj -ws. Cov pob no yog tswj xyuas los ntawm cov Apollo zej zog, tab sis yuav ua tau siv nrog txhua tus neeg siv lossis server GraphQL kev siv.
Pom zoo:
Yuav ua li cas koj tuaj yeem txav qhov taw tes nrawm nrawm mus rau qhov pib ntawm cov lus nug cov lus nug?
T lossis F: Nias Ctrl + txoj cai xub yuam sij kom txav qhov taw tes rau qhov pib ntawm lo lus tom ntej
Dab tsi yog tag nrho cov kab kev sib txuas lus uas xav tau rau kev sib txuas tag nrho rau taw tes network ntawm tsib lub khoos phis tawj rau lub khoos phis tawj?
Tus naj npawb ntawm cov kab sib txuas lus uas yuav tsum tau muaj rau kev sib txuas tag nrho ntawm qhov taw tes rau-taw tes ntawm yim lub khoos phis tawj yog nees nkaum yim. Ib tug tag nrho txuas cuaj lub computer network yuav tsum tau peb caug rau kab. Ib tug tag nrho txuas kaum lub computer network yuav tsum tau plaub caug tsib kab
Puas txhais tau tias yog kev sib raug zoo ntawm cov khoom ntawm ib yam khoom thiab lub peev xwm ntawm tus neeg sawv cev uas muab cov lus qhia rau kev siv cov khoom?
Kev them nyiaj yog kev sib raug zoo ntawm cov khoom ntawm ib yam khoom thiab lub peev xwm ntawm tus neeg sawv cev uas txiav txim siab seb qhov khoom siv tau li cas
Dab tsi ntawm cov hauv qab no yog hais txog cov txheej txheem ntawm tus kheej muaj cov kev pabcuam uas sib txuas lus los tsim ib daim ntawv thov software ua haujlwm?
Ib qho kev pabcuam-oriented architecture yog teeb tsa cov kev pabcuam tus kheej uas sib txuas lus nrog ib leeg los tsim ib daim ntawv thov software ua haujlwm. Nyob rau hauv ib tug ntau-tiered network: kev ua hauj lwm ntawm tag nrho cov network yog sib npaug ntawm ntau theem ntawm servers
Yuav ua li cas koj sau cov lus nug hauv lub zog lus nug?
Thawj kauj ruam hauv kev tsim koj tus kheej Power Query tsab ntawv yog ntxiv cov lus nug dawb paug rau Power BI Desktop. Txhawm rau ntxiv cov lus nug, nyem Tau Cov Ntaub Ntawv ntawm Lub Tsev ribbon nyob rau hauv lub qhov rai tseem ceeb, mus rau Lwm ntu, thiab nyem ob npaug rau Blank Query. Qhov no tso tawm Query Editor nrog cov lus nug tshiab uas teev nyob rau hauv Queries pane