feature: Metadata Mapping pattern (#1932)

* metadata-mapping * Update README.md * add class diagram * update README.md * fix identation * Update pom.xml * fix indentation * fix ci * remove e.printstack * fix ci * update class diagram * fix ci * fix ci * fix sc * fix smells * Update DatabaseUtil.java * fix coverage * Update DatabaseUtil.java * Update DatabaseUtil.java * Update DatabaseUtil.java * Update metadata-mapping/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * fix review * fix review * Update App.java * Update App.java * fix review Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>
2022-01-02 02:46:20 +08:00
parent f670ae547b
commit 8403fdacdd
13 changed files with 661 additions and 0 deletions
--- a/metadata-mapping/src/main/java/com/iluwatar/metamapping/utils/HibernateUtil.java
+++ b/metadata-mapping/src/main/java/com/iluwatar/metamapping/utils/HibernateUtil.java
@@ -0,0 +1,45 @@
+package com.iluwatar.metamapping.utils;
+
+import lombok.extern.slf4j.Slf4j;
+import org.hibernate.SessionFactory;
+import org.hibernate.cfg.Configuration;
+
+/**
+ * Manage hibernate.
+ */
+@Slf4j
+public class HibernateUtil {
+
+  private static final SessionFactory sessionFactory = buildSessionFactory();
+
+  /**
+   * Hide constructor.
+   */
+  private HibernateUtil() {}
+
+  /**
+   * Build session factory.
+   * @return session factory
+   */
+  private static SessionFactory buildSessionFactory() {
+    // Create the SessionFactory from hibernate.cfg.xml
+    return new Configuration().configure().buildSessionFactory();
+  }
+
+  /**
+   * Get session factory.
+   * @return session factory
+   */
+  public static SessionFactory getSessionFactory() {
+    return sessionFactory;
+  }
+
+  /**
+   * Close session factory.
+   */
+  public static void shutdown() {
+    // Close caches and connection pools
+    getSessionFactory().close();
+  }
+
+}