📄 example_weblog.pot
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"\n" "import java.util.ArrayList;\n" "import java.util.Calendar;\n" "import java.util.Iterator;\n" "import java.util.List;\n" "\n" "import org.hibernate.HibernateException;\n" "import org.hibernate.Query;\n" "import org.hibernate.Session;\n" "import org.hibernate.SessionFactory;\n" "import org.hibernate.Transaction;\n" "import org.hibernate.cfg.Configuration;\n" "import org.hibernate.tool.hbm2ddl.SchemaExport;\n" "\n" "public class BlogMain {\n" " \n" " private SessionFactory _sessions;\n" " \n" " public void configure() throws HibernateException {\n" " _sessions = new Configuration()\n" " .addClass(Blog.class)\n" " .addClass(BlogItem.class)\n" " .buildSessionFactory();\n" " }\n" " \n" " public void exportTables() throws HibernateException {\n" " Configuration cfg = new Configuration()\n" " .addClass(Blog.class)\n" " .addClass(BlogItem.class);\n" " new SchemaExport(cfg).create(true, true);\n" " }\n" " \n" " public Blog createBlog(String name) throws HibernateException {\n" " \n" " Blog blog = new Blog();\n" " blog.setName(name);\n" " blog.setItems( new ArrayList() );\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " try {\n" " tx = session.beginTransaction();\n" " session.persist(blog);\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " return blog;\n" " }\n" " \n" " public BlogItem createBlogItem(Blog blog, String title, String text)\n" " throws HibernateException {\n" " \n" " BlogItem item = new BlogItem();\n" " item.setTitle(title);\n" " item.setText(text);\n" " item.setBlog(blog);\n" " item.setDatetime( Calendar.getInstance() );\n" " blog.getItems().add(item);\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " try {\n" " tx = session.beginTransaction();\n" " session.update(blog);\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " return item;\n" " }\n" " \n" " public BlogItem createBlogItem(Long blogid, String title, String text)\n" " throws HibernateException {\n" " \n" " BlogItem item = new BlogItem();\n" " item.setTitle(title);\n" " item.setText(text);\n" " item.setDatetime( Calendar.getInstance() );\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " try {\n" " tx = session.beginTransaction();\n" " Blog blog = (Blog) session.load(Blog.class, blogid);\n" " item.setBlog(blog);\n" " blog.getItems().add(item);\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " return item;\n" " }\n" " \n" " public void updateBlogItem(BlogItem item, String text)\n" " throws HibernateException {\n" " \n" " item.setText(text);\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " try {\n" " tx = session.beginTransaction();\n" " session.update(item);\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " }\n" " \n" " public void updateBlogItem(Long itemid, String text)\n" " throws HibernateException {\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " try {\n" " tx = session.beginTransaction();\n" " BlogItem item = (BlogItem) session.load(BlogItem.class, itemid);\n" " item.setText(text);\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " }\n" " \n" " public List listAllBlogNamesAndItemCounts(int max)\n" " throws HibernateException {\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " List result = null;\n" " try {\n" " tx = session.beginTransaction();\n" " Query q = session.createQuery(\n" " \"select blog.id, blog.name, count(blogItem) \" +\n" " \"from Blog as blog \" +\n" " \"left outer join blog.items as blogItem \" +\n" " \"group by blog.name, blog.id \" +\n" " \"order by max(blogItem.datetime)\"\n" " );\n" " q.setMaxResults(max);\n" " result = q.list();\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " return result;\n" " }\n" " \n" " public Blog getBlogAndAllItems(Long blogid)\n" " throws HibernateException {\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " Blog blog = null;\n" " try {\n" " tx = session.beginTransaction();\n" " Query q = session.createQuery(\n" " \"from Blog as blog \" +\n" " \"left outer join fetch blog.items \" +\n" " \"where blog.id = :blogid\"\n" " );\n" " q.setParameter(\"blogid\", blogid);\n" " blog = (Blog) q.uniqueResult();\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " return blog;\n" " }\n" " \n" " public List listBlogsAndRecentItems() throws HibernateException {\n" " \n" " Session session = _sessions.openSession();\n" " Transaction tx = null;\n" " List result = null;\n" " try {\n" " tx = session.beginTransaction();\n" " Query q = session.createQuery(\n" " \"from Blog as blog \" +\n" " \"inner join blog.items as blogItem \" +\n" " \"where blogItem.datetime > :minDate\"\n" " );\n" "\n" " Calendar cal = Calendar.getInstance();\n" " cal.roll(Calendar.MONTH, false);\n" " q.setCalendar(\"minDate\", cal);\n" " \n" " result = q.list();\n" " tx.commit();\n" " }\n" " catch (HibernateException he) {\n" " if (tx!=null) tx.rollback();\n" " throw he;\n" " }\n" " finally {\n" " session.close();\n" " }\n" " return result;\n" " }\n" "}]]>"msgstr ""⌨️ 快捷键说明
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