Programeri SQLite razvijaju projekt za implementaciju mogu\u0107nosti kompilacije biblioteke u me\u0111ukod WebAssembly, koji mo\u017ee raditi u web pregledniku i pogodna je za organizaciju rada s bazama podataka iz web aplikacija napisanih u JavaScriptu. Kod za podr\u0161ku WebAssembly dodan je u glavni repozitorij projekta. Za razliku od WebSQL API-a, koji se temelji na SQLite-u, WASM SQLite je potpuno izoliran od preglednika i ne utje\u010de na njegovu sigurnost (Google je odlu\u010dio odustati od podr\u0161ke za WebSQL u Chromeu nakon nekoliko ranjivosti u SQLite-u koje su se mogle iskoristiti putem WebSQL za napad na preglednik). <\/p>\n
Cilj projekta je pru\u017eiti funkcionalnu JavaScript omotnicu identi\u010dnu API-ju SQLite. Web programerima se nudi visokonaponski objektno-orijentirani interfejs za rad s podacima u stilu sql.js ili Node.js, omotnica nad niskonaponskim C API-jem i API-jem temeljenim na mehanizmu Web Worker, \u0161to omogu\u0107uje stvaranje asinkronih obrtnika koji se izvr\u0161avaju u posebnim nitima. Kako bi se prikrile slo\u017eenosti organizacije rada s nitima putem API-ja temeljenog na Web Worker-u, tako se razvija i opcija programsko su\u010delje temeljenog na mehanizmu Promise. <\/p>\n
Podaci koje web aplikacije pohranjuju u WASM verziji SQLite mogu biti lokalizirani unutar trenutne sesije (gube se nakon ponovnog u\u010ditavanja stranica) ili pohranjeni na strani klijenta (ostaju izme\u0111u sesija). Za trajnu pohranu pripremljeni su backendovi za smje\u0161taj podataka u lokalni fajl sistem koriste\u0107i OPFS (Origin-Private FileSystem, pro\u0161irenje API-ja File System Access, dostupno za sada samo u preglednicima temeljenim na WebKitu i Chromiumu) i u lokalnim pregledni\u010dkim skladi\u0161tima temeljima na API-ju window.localStorage i window.sessionStorage. U slu\u010daju kori\u0161tenja localStorage\/sessionStorage, podaci se odra\u017eavaju u odgovaraju\u0107i skladi\u0161ta u formatu klju\u010d\/vrijednost, dok su za OPFS predvi\u0111ena dva rje\u0161enja: simulacija virtualnog fajl sistema pomo\u0107u WASMFS i odvojena implementacija sqlite3_vfs, koja nudi sloj SQLite VFS temeljen na OPFS. <\/p>\n
\u0414\u043b\u044f \u0441\u0431\u043e\u0440\u043a\u0438 SQLite \u0432 WASM-\u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 Emscripten (\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0441\u043e\u0431\u0440\u0430\u0442\u044c \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0435 ext\/wasm: «.\/configure —enable-all; make sqlite3.c; cd ext\/wasm; make»). \u041d\u0430 \u0432\u044b\u0445\u043e\u0434\u0435 \u0444\u043e\u0440\u043c\u0438\u0440\u0443\u044e\u0442\u0441\u044f \u0444\u0430\u0439\u043b\u044b sqlite3.js \u0438 sqlite3.wasm, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0436\u043d\u043e \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0432 \u0441\u0432\u043e\u0439 JavaScript-\u043f\u0440\u043e\u0435\u043a\u0442 (\u043f\u0440\u0438\u043c\u0435\u0440 HTML \u0438 JavaScript). \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 SQLite \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0442 \u043f\u0440\u043e\u0435\u043a\u0442 \u043f\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0446\u0438\u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0432 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0439 \u043a\u043e\u0434 WebAssembly, \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b\u0439 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0442\u044c\u0441\u044f \u0432 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0435 \u0438 \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u044b\u0439 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0411\u0414 \u0438\u0437 web-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. \u041a\u043e\u0434 \u0434\u043b\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 WebAssembly \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u0430. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 API WebSQL, \u0432 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043b\u0435\u0436\u0438\u0442 SQLite, WASM SQLite \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d \u043e\u0442 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 \u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105408","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47U SQLite je dodana podr\u0161ka za WASM za kori\u0161tenje sustava za upravljanje bazama podataka u web pregledniku | ProHoster","description":"Programeri SQLite razvijaju projekt za implementaciju mogu\u0107nosti kompilacije biblioteke u me\u0111uk\u00f4d WebAssembly, koji se mo\u017ee pokretati u web preglednicima i koristiti za rad s bazama podataka iz web 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\u043d\u0430.","og:url":"https:\/\/prohoster.info\/hr\/blog\/news\/v-sqlite-dobavlena-podderzhka-wasm-dlya-ispolzovaniya-subd-v-web-brauzere","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-10-29T19:36:38+00:00","article:modified_time":"2022-10-29T19:36:38+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/105408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/comments?post=105408"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/105408\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/media?parent=105408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/categories?post=105408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/tags?post=105408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"