{"id":90484,"date":"2020-08-01T13:42:39","date_gmt":"2020-08-01T11:42:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python"},"modified":"2020-08-01T13:42:39","modified_gmt":"2020-08-01T11:42:39","slug":"obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python","title":{"rendered":"Aggiornamento JPype 1.0.2, una libreria per accedere a classi Java da Python.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/jpype-project\/jpype\/releases\/tag\/1.0.2\">Disponibile<\/a><\/noindex> nuovo rilascio del layer <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/jpype-project\/jpype\/\">JPype 1.0.2<\/a><\/noindex>, che permette l'accesso completo delle applicazioni Python alle librerie di classi Java. Con JPype, \u00e8 possibile utilizzare le librerie specifiche di Java da Python, creando applicazioni ibride che combinano codice Java e Python. A differenza di Jython, l'integrazione con Java non avviene attraverso una variante di Python per la JVM, ma attraverso un'interazione a livello di entrambe le macchine virtuali, utilizzando la memoria condivisa. Questo approccio consente non solo di ottenere buone prestazioni, ma fornisce anche accesso a tutte le librerie CPython e Java. Il codice del progetto <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/jpype-project\/jpype\/\">distribuito<\/a><\/noindex> sotto licenza Apache 2.0.<\/p>\n<p>Principali modifiche:<\/p>\n<ul>\n<li class=\"l\"> \u00c8 stata aggiunta una cache nelle chiamate ai metodi per evitare la risoluzione delle sovraccarichi, riducendo notevolmente l'impatto sulle prestazioni della risoluzione dei metodi, specialmente quando la stessa sovraccarico viene chiamata molte volte, come durante l'esecuzione di cicli.\n<li class=\"l\"> La trasmissione di liste, tuple e buffer in array di primitivi Java \u00e8 stata accelerata da 4 a 100 volte, a seconda del tipo di dati. La conversione utilizza un'elaborazione ottimizzata dei buffer in memoria, anzich\u00e9 l'API Sequence. Quando si incontra un buffer Python, solo il primo elemento viene controllato per la conversione, poich\u00e9 i buffer di dati sono omogenei.\n<li class=\"l\"> Gestione delle operazioni di shutdown (introdotta gi\u00e0 in JPype 1.0.0, ma omessa nella preparazione della lista delle modifiche). JPype ora richiama la procedura di shutdown della JVM, che tenta di uscire in modo &#171;gracefully&#187;. Questo porta a diverse modifiche nel comportamento. I thread in background (chiamata proxy) possono ora mantenere aperta la JVM fino al termine. Le chiamate Proxy gestiranno lo shutdown fino al completamento della chiamata, ma riceveranno un messaggio di interruzione. I file vengono ora chiusi correttamente e i dati vengono scritti su disco (flush), se i thread gestiscono l'eccezione nel modo giusto. Vengono eseguiti i ganci per la pulizia delle risorse e i finalizzatori. Durante la creazione dei thread vengono chiamati i ganci AtExit. L'auto-assemblaggio dei thread usando la JVM da Python \u00e8 implementato tramite un demone. Codice errato, che non riesce a gestire correttamente la pulizia del thread, potrebbe bloccarsi durante l'esecuzione dello shutdown. Ulteriore documentazione \u00e8 disponibile nel manuale d'uso.\n<li class=\"l\"> Il wrapper per Throwable riceveva un wrapper per Object invece del risultato atteso, causando strane conversioni da classi Python.\n<li class=\"l\"> Correzione dei refusi nel sistema di importazione, che portavano all'errore &#8216;&#187;jname&#187; non trovato&#8217;.\n<li class=\"l\"> Assicurato il corretto avanzamento di &#171;^C&#187; in KeyboardInterrupt.\n<li class=\"l\"> Risolto il problema con i caratteri in Python 3.5.3. PySlice_Unpack \u00e8 stato introdotto nella successiva patch (3.5.4) e non doveva essere utilizzato.\n<li class=\"l\"> Risolto un bug con numpy.linalg.inv che causava un crash. Il problema \u00e8 stato tracciato all'interazione dei thread tra JVM e alcune varianti di numpy. La soluzione proposta \u00e8 di chiamare numpy.linalg.inv prima di avviare la JVM.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53469\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438 JPype 1.0.2, \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 [&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-90484","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/it\/blog\/news\/obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.0.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"it_IT\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 JPype 1.0.2, \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a Java-\u043a\u043b\u0430\u0441\u0441\u0430\u043c \u0438\u0437 Python | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/it\/blog\/news\/obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-08-01T11:42:39+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-08-01T11:42:39+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Aggiornamento JPype 1.0.2, libreria per accedere a classi Java da Python | ProHoster","description":"\u00c8 disponibile una nuova versione del layer","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 JPype 1.0.2, \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a Java-\u043a\u043b\u0430\u0441\u0441\u0430\u043c \u0438\u0437 Python | ProHoster","og:description":"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0441\u043b\u043e\u0439\u043a\u0438","og:url":"https:\/\/prohoster.info\/it\/blog\/news\/obnovlenie-jpype-1-0-2-biblioteki-dlya-dostupa-k-java-klassam-iz-python","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":"2020-08-01T11:42:39+00:00","article:modified_time":"2020-08-01T11:42:39+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"90484","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 12:49:32","updated":"2022-10-08 07:13:16","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/90484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=90484"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/90484\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=90484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=90484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=90484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}