Video: Dab tsi yog qhov kev ua tiav hauv Spring Batch?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib ExecutionContext yog ib pawg ntawm cov tseem ceeb-tus nqi khub uas muaj cov ntaub ntawv uas yog scoped rau StepExecution los yog JobExecution. Caij nplooj ntoos hlav Batch mob siab rau ExecutionContext , uas yuav pab tau thaum koj xav rov pib dua a pawg khiav (piv txwv li, thaum muaj kev ua yuam kev tuag, thiab lwm yam).
Hauv qhov no, Stepexecutioncontext hauv Spring Batch yog dab tsi?
pej xeem chav kawm StepExecution Extens Qhov Chaw. Batch domain object sawv cev rau kev ua tiav ntawm ib kauj ruam. Tsis zoo li JobExecution, muaj cov khoom ntxiv ntsig txog kev ua cov khoom xws li kev suav suav, thiab lwm yam.
Ib yam li ntawd, dab tsi yog chunk hauv Spring Batch? Caij nplooj ntoos hlav Batch siv ib ' Khawm -oriented' ua style nyob rau hauv nws feem ntau siv. Khawm oriented processing hais txog kev nyeem cov ntaub ntawv ib zaug thiab tsim ' tej kab ' uas tau sau tawm hauv ib thaj tsam kev sib pauv. Ib yam khoom yog nyeem los ntawm ItemReader, xa mus rau ItemProcessor, thiab sib sau ua ke.
Raws li, StepScope hauv Spring Batch yog dab tsi?
A caij nplooj ntoos hlav batch StepScope khoom yog ib qho tshwj xeeb rau ib kauj ruam tshwj xeeb thiab tsis yog ib qho singleton. Tab sis los ntawm kev qhia a caij nplooj ntoos hlav batch tiv thaiv StepScope txhais tau tias Caij nplooj ntoos hlav Batch yuav siv lub caij nplooj ntoos hlav thawv kom instantiate ib qho piv txwv tshiab ntawm cov khoom ntawd rau txhua kauj ruam ua.
Dab tsi yog qhov chaw ua haujlwm hauv Spring Batch?
1.2 JobRepository . Raws li lub npe qhia nws yog a chaw cia khoom uas muaj ib tug persistence mechanism rau tag nrho cov meta-cov ntaub ntawv muaj feem xyuam rau kev ua ntawm lub Txoj hauj lwm . 'data-source' tuaj yeem teeb tsa los taw tes rau cov ntaub ntawv siv los khaws cia pawg meta-data entities.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov kev npaj ua tiav thiab kev npaj ua tiav tiag tiag?
2 Teb. Qhov kwv yees ua tiav txoj kev npaj yog tsim los ntawm cov txheeb cais uas SQL Server muaj - yam tsis tau ua tiav cov lus nug. Txoj kev npaj ua tiav tiag tiag tsuas yog qhov ntawd - txoj kev npaj ua tiav tiag tiag uas tau siv thaum ua tiav cov lus nug
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Dab tsi yog qhov kev npaj ua tiav hauv SQL Server?
Muaj ob hom kev npaj ua tiav uas tuaj yeem tso tawm los ntawm SQL Server Management Studio; Lub Hom Phiaj Ua Haujlwm tiag tiag uas qhia txog qhov kev suav tiag tiag thiab cov kauj ruam ua raws los ntawm SQL Server Storage Cav thaum ua tiav cov lus nug xa, uas yuav tsum tau ua tiav cov lus nug xa mus los tsim cov lus nug
Dab tsi yog qhov dav thawj qhov kev tshawb nrhiav thiab qhov tob thawj qhov kev tshawb fawb?
BFS sawv rau Breadth First Search. DFS sawv cev rau Kev Tshawb Nrhiav Qhov tob. 2. BFS (Breadth First Search) siv Queue cov qauv ntaub ntawv los nrhiav txoj hauv kev luv tshaj. BFS tuaj yeem siv los nrhiav ib qhov chaw luv tshaj plaws hauv cov duab tsis hnyav, vim tias hauv BFS, peb mus txog qhov kawg uas muaj qhov tsawg kawg nkaus ntawm cov npoo los ntawm qhov chaw vertex
Dab tsi yog qhov kev ua tiav hauv ARM?
ARM PROCESSOR FUNDAMENTALS Kev ua raws li cov cai tswj xyuas seb lub hauv paus puas yuav ua tiav cov lus qhia. Yog tias lawv sib phim, ces cov lus qhia raug muab tua; txwv tsis pub cov lus qhia yog tsis quav ntsej. Tus cwj pwm mob yog postfixed rau cov lus qhia mnemonic, uas yog encoded rau hauv cov lus qhia