{"id":72012,"date":"2020-02-29T21:04:04","date_gmt":"2020-02-29T18:04:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reliz-jpype-0-7-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python"},"modified":"2020-03-03T16:10:24","modified_gmt":"2020-03-03T13:10:24","slug":"reliz-jpype-0-7-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/reliz-jpype-0-7-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python","title":{"rendered":"Izid JPype 0.7.2, knji\u017enice za dostop do Java razredov iz Pythona","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/jpype-project\/jpype\/releases\/tag\/v0.7.2\">Na voljo<\/a><\/noindex> izdanje sloja <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/jpype-project\/jpype\/\">JPype 0.7.2<\/a><\/noindex>, ki omogo\u010da popoln dostop Python aplikacij do knji\u017enic razredov v jeziku Java. Z uporabo JPype lahko iz Pythona uporabljate specifi\u010dne knji\u017enice Java in ustvarjate hibridne aplikacije, ki zdru\u017eujejo kodo v Java in Python. V nasprotju z Jythonom se integracija z Javo ne dose\u017ee s kreiranjem razli\u010dice Pythona za JVM, temve\u010d z interakcijo na ravni obeh virtualnih strojev, pri \u010demer se uporablja deljena pomnilni\u0161ka prostorska. Predlagan pristop omogo\u010da dosego dobre zmogljivosti ter dostop do vseh knji\u017enic CPython in Java. Koda projekta <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/jpype-project\/jpype\/\">se distribuira<\/a><\/noindex> pod licenco Apache 2.0.<\/p>\n<p>Glavne spremembe:<\/p>\n<ul>\n<li class=\"l\"> Izjeme, ki jih povzro\u010dijo C++ in Java koda, zdaj zagotavljajo sklad izjem ob nastopu izjeme v Python kodu. Tako da za pridobitev informacij o skladu izjem ve\u010d ni potrebno klicati stacktrace().\n<li class=\"l\"> Hitrost povrnitve ob klicih je pove\u010dana trikrat.\n<li class=\"l\"> Mo\u010dno (ve\u010dkrat) je bila pove\u010dana hitrost prenosa v<br \/>\nnumpy buferje ve\u010ddimenzionalnih matrik. Ve\u010ddimenzionalni primitivni podatki prena\u0161ajo le za branje dostopne kopije, ustvarjene znotraj JVM s kontinuirnim razporedkom C.<\/p>\n<li class=\"l\"> Vse izpostavljene notranje komponente so bile zamenjane z implementacijami iz CPython, simboli __javaclass__, __javavalue__ in __javaproxy__<br \/>\nso bili odstranjeni. Vsem tipom CPython, dedovanim iz tipov razreda jpype, je dodana posebna Java-slot. Vse privatne tabele so bile prenesene v CPython. Java tipi zdaj morajo biti dedovani iz metaklase JClass, ki uporablja tipe slotov. Me\u0161anice za osnovne razrede Python niso dovoljene. Tipi Object, Proxy, Exception, Number in Array so neposredno dedovani iz notranjih implementacij CPython.<\/p>\n<li class=\"l\"> Izbolj\u0161ano je sledenje in obravnava izjem.\n<li class=\"l\"> Rezine matrik (Array slices) so zdaj obravnavane kot prikazi, ki podpirajo obratno pisanje v izvor, kot je matrika numpy. Za rezine matrik je zagotovljena podpora za nastavitev in pridobitev vrednosti s korakom (slice(start, stop, step)).\n<li class=\"l\"> Podpiranje funkcije &#171;__reversed__&#187; je bilo implemented v poljih.\n<li class=\"l\"> V Java matrikah je zagotovljena podpora za API memoryview in odstranjena je odvisnost od numpy za prenos vsebine buferja.\n<li class=\"l\"> Numpy zdaj ni ve\u010d odvisnost (extra) in prenos pomnilnika v numpy je mogo\u010d brez kompilacije s podporo za numpy.\n<li class=\"l\"> JInterface je oblikovan kot metaklas. Uporabite isinstance(cls, JInterface) za preverjanje vmesnikov.\n<li class=\"l\"> Privzeto so bili dodani manjkajo\u010di TLD-ji &#171;mil&#187;, &#171;net&#187; in &#171;edu&#187;.\n<li class=\"l\"> Ob zagonu so izbolj\u0161ana sporo\u010dila o napakah za UnsupportedClassVersion.\n<li class=\"l\">    java.util.Map zdaj vrne KeyError, \u010de element ni najden. Vrednosti, ki so null, \u0161e vedno vrnejo None, kot se pri\u010dakuje. Uporabite get(), \u010de je potrebno obravnavati prazne klju\u010de kot None.\n<li class=\"l\"> java.util.Collection je bil odstranjen, saj je \u010dudno preobremenjen med remove(Object) in remove(int) na seznamih. Uporabite Java metodo remove() za dostop do originalnega Java vedenja, vendar je strogo priporo\u010deno izvedeti tip za obvladovanje preobremenitve.\n<li class=\"l\"> java.lang.IndexOutOfBoundsException se zdaj lahko ujame z razredom za izjeme IndexError pri dostopu do elementov java.util.List.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52456\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438 JPype 0.7.2, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u043e\u043b\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f Python-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430\u043c \u043a\u043b\u0430\u0441\u0441\u043e\u0432 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Java. \u041f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 JPype \u0438\u0437 Python \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u044b\u0435 \u0434\u043b\u044f Java \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438, \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u044f \u0433\u0438\u0431\u0440\u0438\u0434\u043d\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0441\u043e\u0447\u0435\u0442\u0430\u044e\u0449\u0438\u0435 \u043a\u043e\u0434 \u043d\u0430 Java \u0438 Python. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 Jython, \u0438\u043d\u0442\u0435\u0433\u0440\u0430\u0446\u0438\u044f \u0441 Java \u0434\u043e\u0441\u0442\u0438\u0433\u0430\u0435\u0442\u0441\u044f \u043d\u0435 \u0447\u0435\u0440\u0435\u0437 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 Python \u0434\u043b\u044f JVM, \u0430 \u0447\u0435\u0440\u0435\u0437 \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043d\u0430 [&hellip;]<\/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-72012","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 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