{"id":25956,"date":"2024-03-16T05:56:43","date_gmt":"2024-03-16T05:56:43","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/"},"modified":"2024-03-22T07:25:28","modified_gmt":"2024-03-22T07:25:28","slug":"how-do-you-use-jpa-delete","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/","title":{"rendered":"How do you use jpa delete?"},"content":{"rendered":"<p>In JPA, deleting entity objects can be done in two ways:<\/p>\n<p>Use the remove() method of EntityManager.<\/p>\n<pre class=\"post-pre\"><code>entityManager.remove(entity);\r\n<\/code><\/pre>\n<p>In this process, you first need to retrieve the entity object you want to delete, and then remove it from the database using the remove() method.<\/p>\n<p>2. Using the DELETE statement in JPQL (Java Persistence Query Language):<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">jpql<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"DELETE FROM EntityName e WHERE e.id = :id\"<\/span>;\r\n<span class=\"hljs-type\">Query<\/span> <span class=\"hljs-variable\">query<\/span> <span class=\"hljs-operator\">=<\/span> entityManager.createQuery(jpql);\r\nquery.setParameter(<span class=\"hljs-string\">\"id\"<\/span>, entityId);\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">deletedCount<\/span> <span class=\"hljs-operator\">=<\/span> query.executeUpdate();\r\n<\/code><\/pre>\n<p>In this way, you can specify the entity type and deletion criteria in the DELETE statement of JPQL, and then execute the deletion operation using the executeUpdate() method. Variables in the deletion criteria can be set using parameters.<\/p>\n<p>It is important to note that both of the above methods only remove the entity object from the database, and the actual deletion operation will not take place until the transaction is committed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In JPA, deleting entity objects can be done in two ways: Use the remove() method of EntityManager. entityManager.remove(entity); In this process, you first need to retrieve the entity object you want to delete, and then remove it from the database using the remove() method. 2. Using the DELETE statement in JPQL (Java Persistence Query Language): [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-25956","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How do you use jpa delete? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How do you use jpa delete?\" \/>\n<meta property=\"og:description\" content=\"In JPA, deleting entity objects can be done in two ways: Use the remove() method of EntityManager. entityManager.remove(entity); In this process, you first need to retrieve the entity object you want to delete, and then remove it from the database using the remove() method. 2. Using the DELETE statement in JPQL (Java Persistence Query Language): [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-16T05:56:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T07:25:28+00:00\" \/>\n<meta name=\"author\" content=\"William Carter\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"William Carter\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/\"},\"author\":{\"name\":\"William Carter\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/f697031891aacefc4b681d139781d3c0\"},\"headline\":\"How do you use jpa delete?\",\"datePublished\":\"2024-03-16T05:56:43+00:00\",\"dateModified\":\"2024-03-22T07:25:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/\"},\"wordCount\":130,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-do-you-use-jpa-delete\/\",\"name\":\"How do you use jpa delete? 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