Ngakolunye uhlangothi, ukuskena amadokhumenti phezu kwenethiwekhi kubonakala sengathi kukhona, kodwa ngakolunye uhlangothi, akubanga umkhuba owamukelwa ngokuvamile, ngokungafani nokunyathelisa kwenethiwekhi. Abalawuli basafaka abashayeli, futhi izilungiselelo zokuskena ukude zingezazodwa kumodeli yesikena ngasinye. Yibuphi ubuchwepheshe obukhona njengamanje, futhi ingabe isimo esinjalo sinekusasa?
Umshayeli ofakekayo noma ukufinyelela okuqondile
Okwamanje kunezinhlobo ezine ezijwayelekile zabashayeli: TWAIN, ISIS, SANE kanye ne-WIA. Empeleni, laba bashayeli basebenza njengesixhumi esibonakalayo phakathi kohlelo lokusebenza kanye nelabhulali yezinga eliphansi kusuka kumkhiqizi oxhuma kumodeli ethile.
Isakhiwo sokuxhuma isithwebuli esilula
Ngokuvamile kucatshangwa ukuthi isithwebuli sixhunywe ngqo kukhompyutha. Nokho, akekho okhawulela iphrothokholi phakathi kwelabhulali yezinga eliphansi kanye nedivayisi. Kungaba futhi i-TCP/IP. Yile ndlela ama-MFP amaningi anenethiwekhi asebenza ngayo manje: isithwebuli sibonakala njengendawo, kodwa uxhumano ludlula kunethiwekhi.
Inzuzo yalesi sixazululo ukuthi uhlelo lokusebenza alukhathaleli ngqo ukuthi uxhumano lwenziwa kanjani, into eyinhloko ukubona i-TWAIN ejwayelekile, i-ISIS noma enye i-interface. Asikho isidingo sokusebenzisa ukwesekwa okukhethekile.
Kodwa nemibi iyabonakala. Isixazululo sisekelwe ku-OS yedeskithophu. Amadivayisi eselula awasasekelwa. Ububi besibili ukuthi abashayeli bangakwazi ukungazinzi kwingqalasizinda eyinkimbinkimbi, isibonelo, kumaseva agcinayo anamakhasimende amancane.
Indlela yokuphuma izoba ukusekela ukuxhumana okuqondile kusikena ngephrothokholi ye-HTTP/RESTful.
TWAIN Direct
yahlongozwa i-TWAIN Working Group njengendlela yokufinyelela ngaphandle komshayeli.
TWAIN Direct
Umbono oyinhloko ukuthi yonke i-logic idluliselwa ohlangothini lwesithwebuli. Futhi isithwebuli sinikeza ukufinyelela nge-REST API. Ukwengeza, imininingwane iqukethe incazelo yokushicilelwa kwedivayisi (i-autodiscovery). Kubukeka kukuhle. Kumlawuli, lokhu kuqeda izinkinga ezingaba khona nabashayeli. Ukusekelwa kwawo wonke amadivaysi, into esemqoka ukuthi kukhona uhlelo lokusebenza oluhambisanayo. Kukhona futhi izinzuzo zonjiniyela, ikakhulukazi isixhumi esibonakalayo sokusebenzisana esijwayelekile. Iskena sisebenza njengesevisi yewebhu.
Uma sicubungula izimo zokusetshenziswa kwangempela, kuzoba nokubi. Esokuqala yisimo se-deadlock. Awekho amadivayisi emakethe ane-TWAIN Direct futhi akuwenzi umqondo ngonjiniyela ukusekela lobu buchwepheshe, futhi ngokuphambene nalokho. Okwesibili ukuphepha; ukucaciswa akukubeki izidingo ekuphathweni komsebenzisi noma imvamisa yezibuyekezo zokuvala izimbobo ezingaba khona. Futhi akucaci ukuthi abalawuli bangazilawula kanjani izibuyekezo nokufinyelela. Ikhompyutha inesofthiwe yokulwa namagciwane. Kodwa ku-firmware yesithwebuli, okusobala ukuthi izoba neseva yewebhu, lokhu kungase kungabi njalo. Noma kube, kodwa hhayi lokho okudingwa yinqubomgomo yezokuphepha yenkampani. Vuma, ukuba nohlelo olungayilungele ikhompuyutha oluzothumela wonke amadokhumenti askeniwe kwesokunxele akukuhle kakhulu. Okusho ukuthi, ngokusetshenziswa kwaleli zinga, imisebenzi eyaxazululwa yizilungiselelo zezinhlelo zokusebenza zezinkampani zangaphandle ishintshelwa kubakhiqizi bedivayisi.
Ububi besithathu kungenzeka ukulahlekelwa ukusebenza. Abashayeli bangase babe nokunye okwengeziwe ngemva kokucubungula. Ukuqashelwa kwebhakhodi, ukususwa kwangemuva. Ezinye izikena zinalokhu okubizwa. imprinter - umsebenzi ovumela isithwebuli ukuthi siphrinte kudokhumenti ecutshunguliwe. Lokhu akutholakali ku-TWAIN Direct. Ukucaciswa kuvumela i-API ukuthi inwetshwe, kodwa lokhu kuzoholela ekusetshenzisweni okuningi okungokwezifiso.
Nokunye ukususa okukodwa kuzimo zokusebenza nesithwebuli.
Skena ohlelweni lokusebenza, noma skena kusuka kudivayisi
Ake sibheke ukuthi ukuskena okujwayelekile okuvela kuhlelo lokusebenza kusebenza kanjani. Ngibeka phansi idokhumenti. Bese ngivula uhlelo lokusebenza bese ngiskena. Bese ngithatha idokhumenti. Izinyathelo ezintathu. Manje ake ucabange ukuthi isithwebuli senethiwekhi sikwelinye igumbi. Udinga ukwenza okungenani izindlela ezi-2 kukho. Lokhu akulula kakhulu kunokuphrinta kwenethiwekhi.
Kungenye indaba lapho isithwebuli ngokwaso singathumela idokhumenti. Ngokwesibonelo, ngeposi. Ngibeka phansi idokhumenti. Bese ngiskena. Idokhumenti indiza ngokushesha iye ohlelweni oluqondiwe.
Lona umehluko omkhulu. Uma idivayisi ixhunywe kunethiwekhi, kuba lula kakhulu ukuskena ngqo kwisitoreji esiqondiwe: ifolda, i-imeyili noma uhlelo lwe-ECM. Ayikho indawo yomshayeli kule sekethe.
Ngokombono wangaphandle, sisebenzisa ukuskena kwenethiwekhi ngaphandle kokushintsha ubuchwepheshe obukhona. Ngaphezu kwalokho, kokubili kusuka kuzinhlelo zokusebenza zedeskithophu ngomshayeli, futhi ngokuqondile kudivayisi. Kodwa ukuskena ukude kusuka kukhompuyutha akuzange kusabalele njengokunyathelisa kwenethiwekhi ngenxa yomehluko ezimeni zokusebenza. Ukuskena ngokuqondile endaweni oyifunayo kuya kuduma kakhulu.
Ukusekelwa kwezikena ze-TWAIN Direct esikhundleni sabashayeli kuyisinyathelo esihle kakhulu. Kodwa izinga liphuzile kancane. Abasebenzisi bafuna ukuskena ngokuqondile kudivayisi yenethiwekhi, bathumele amadokhumenti lapho beya khona. Izinhlelo zokusebenza ezikhona azidingi ukusekela indinganiso entsha, ngoba konke kusebenza kahle manje, futhi abakhiqizi bezikena abadingi ukukusebenzisa, ngoba azikho izinhlelo zokusebenza.
Ekuphetheni. Ukuthambekela okuvamile kubonisa ukuthi ukumane kuthwetshulwe ikhasi elilodwa noma amabili kuzothathelwa indawo amakhamera amafoni. Kuyosala ukuskena kwezimboni, lapho isivinini sibalulekile, ukusekelwa kwemisebenzi yangemva kokucubungula i-TWAIN Direct engakwazi ukuyinikeza, nalapho ukuhlanganiswa okuqinile nesofthiwe kuzohlala kubalulekile.
Source: www.habr.com