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authorThomas Lenz <tlenz@iaik.tugraz.at>2013-06-07 11:50:13 +0200
committerThomas Lenz <tlenz@iaik.tugraz.at>2013-06-07 11:50:13 +0200
commit1c0d27a1d5da91019ed2f51d4184282ea7ffe4f0 (patch)
tree305292fcf059560379307278edd0e99471ef2ae0 /id/server/moa-id-commons/src/main/java/at/gv/egovernment
parent261294df86c33105eb2113808fc6f171e9250ac7 (diff)
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Common classes for Hibernate initializing and database handling
Diffstat (limited to 'id/server/moa-id-commons/src/main/java/at/gv/egovernment')
-rw-r--r--id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/DBUtils.java33
-rw-r--r--id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/HibernateUtil.java159
-rw-r--r--id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/dao/AssertionStore.java74
-rw-r--r--id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/ex/MOADatabaseException.java22
4 files changed, 288 insertions, 0 deletions
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/DBUtils.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/DBUtils.java
new file mode 100644
index 000000000..aab0b281d
--- /dev/null
+++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/DBUtils.java
@@ -0,0 +1,33 @@
+package at.gv.egovernment.moa.id.commons.db;
+
+import java.util.List;
+
+import org.hibernate.Query;
+import org.hibernate.Session;
+
+import at.gv.egovernment.moa.id.commons.db.dao.AssertionStore;
+import at.gv.egovernment.moa.logging.Logger;
+import at.gv.egovernment.moa.util.MiscUtil;
+
+public class DBUtils {
+
+ @SuppressWarnings("rawtypes")
+ public static AssertionStore getAssertion(String artifact) {
+ MiscUtil.assertNotNull(artifact, "artifact");
+ Logger.trace("Getting Assertion with Artifact " + artifact + " from database.");
+
+ Session session = HibernateUtil.getCurrentSession();
+ session.beginTransaction();
+ Query query = session.getNamedQuery("getAssertionWithArtifact");
+ query.setString("artifact", artifact);
+ List result = query.list();
+ Logger.trace("Found entries: " + result.size());
+
+ if (result.size() == 0) {
+ Logger.trace("No entries found.");
+ return null;
+ }
+ return (AssertionStore) result.get(0);
+ }
+
+}
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/HibernateUtil.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/HibernateUtil.java
new file mode 100644
index 000000000..59398c922
--- /dev/null
+++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/HibernateUtil.java
@@ -0,0 +1,159 @@
+package at.gv.egovernment.moa.id.commons.db;
+
+import java.util.Properties;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.HibernateException;
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.hibernate.Transaction;
+import org.hibernate.cfg.Configuration;
+import org.hibernate.service.ServiceRegistry;
+import org.hibernate.service.ServiceRegistryBuilder;
+
+import at.gv.egovernment.moa.id.commons.db.ex.MOADatabaseException;
+import at.gv.egovernment.moa.logging.Logger;
+
+public final class HibernateUtil {
+
+ private static SessionFactory sessionFactory;
+ private static ServiceRegistry serviceRegistry;
+
+ @SuppressWarnings("rawtypes")
+ private static final ThreadLocal THREAD_LOCAL = new ThreadLocal();
+ private static boolean automaticSessionHandling = false;
+
+ private static final String[] AUTOMATIC_SESSION_HANDLING_VALUES = new String[] { "jta", "thread" };
+ private static final String SESSION_HANDLING_KEY = "hibernate.current_session_context_class";
+
+ private static Configuration configuration;
+
+ protected HibernateUtil() { }
+
+ public static void initHibernate(Configuration config, Properties hibernateProperties) {
+
+ String scm = StringUtils.trimToNull(hibernateProperties.getProperty(SESSION_HANDLING_KEY));
+ if (scm != null) {
+ automaticSessionHandling = scm.indexOf(AUTOMATIC_SESSION_HANDLING_VALUES[0]) != -1 || scm.indexOf(AUTOMATIC_SESSION_HANDLING_VALUES[1]) != -1;
+ }
+ Logger.debug("Evaluating hibernate property \"" + SESSION_HANDLING_KEY + "\".");
+ if (automaticSessionHandling) {
+ Logger.info("Hibernate is automatically handling session context management.");
+ } else {
+ Logger.info("Hibernate is NOT automatically handling session context management. Using build-in ThreadLocal session handling.");
+ }
+ try {
+ //Create the SessionFactory
+ Logger.debug("Creating initial session factory...");
+
+ config.configure();
+ serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
+ sessionFactory = config.buildSessionFactory(serviceRegistry);
+ Logger.debug("Initial session factory successfully created.");
+
+ } catch (Throwable ex) {
+ Logger.error("Initial session factory creation failed: " + ex.getMessage());
+ throw new ExceptionInInitializerError(ex);
+ }
+ }
+
+ /**
+ * Checks if a session factory is currently available. If necessary a new
+ * session factory is created.
+ *
+ * @return current (or new) session factory
+ * @throws HibernateException
+ * thrown if a hibernate error occurs
+ */
+ public static Session getCurrentSession() {
+ if (automaticSessionHandling) {
+ return sessionFactory.getCurrentSession();
+ }
+ Session session = (Session) THREAD_LOCAL.get();
+ // Open a new Session, if this Thread has none yet
+ if (session == null || !session.isConnected()) {
+ session = getNewSession();
+ }
+ return session;
+ }
+
+ @SuppressWarnings("unchecked")
+ public static Session getNewSession() {
+ if (automaticSessionHandling) {
+ Logger.warn("Session is being automatically handled by hibernate. Therefore this session maybe not being newly created. Use HibernateUtil.getCurrentSession() instead.");
+ return sessionFactory.getCurrentSession();
+ }
+ Session session = (Session) THREAD_LOCAL.get();
+ if (session != null) {
+ Logger.warn("Previous session has not been closed; closing session now.");
+ closeSession();
+ }
+ Logger.debug("Opening new hibernate session...");
+ try {
+ session = sessionFactory.openSession();
+ THREAD_LOCAL.set(session);
+ } catch (HibernateException hex) {
+ Logger.error(hex.getMessage());
+ }
+ return session;
+ }
+
+ /**
+ * Closes the current session.
+ *
+ * @throws HibernateException
+ * thrown if session is already closed or a hibernate error
+ * occurs.
+ */
+ @SuppressWarnings("unchecked")
+ public static void closeSession() {
+ if (automaticSessionHandling) {
+ Logger.warn("Session is being automatically handled by hibernate. Therefore the current session cannot be closed on demand.");
+ return;
+ }
+ Logger.debug("Closing current hibernate session...");
+ Session session = (Session) THREAD_LOCAL.get();
+ THREAD_LOCAL.set(null);
+ if (session != null) {
+ try {
+ session.close();
+
+ } catch (HibernateException hex) {
+ Logger.error(hex.getMessage());
+ }
+ }
+ }
+
+ public static boolean saveOrUpdate(Object dbo) throws MOADatabaseException {
+ Transaction tx = null;
+ try {
+ Session session = HibernateUtil.getCurrentSession();
+ tx = session.beginTransaction();
+ session.saveOrUpdate(dbo);
+ tx.commit();
+ return true;
+
+ } catch(HibernateException e) {
+ Logger.warn("Error during database saveOrUpdate. Rollback.", e);
+ tx.rollback();
+ throw new MOADatabaseException(e);
+ }
+ }
+
+ public static boolean delete(Object dbo) {
+ Transaction tx = null;
+ try {
+ Session session = HibernateUtil.getCurrentSession();
+ tx = session.beginTransaction();
+ session.delete(dbo);
+ tx.commit();
+ return true;
+
+ } catch(HibernateException e) {
+ Logger.warn("Error during database delete. Rollback.", e);
+ tx.rollback();
+ return false;
+ }
+ }
+
+}
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/dao/AssertionStore.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/dao/AssertionStore.java
new file mode 100644
index 000000000..9dff193d6
--- /dev/null
+++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/dao/AssertionStore.java
@@ -0,0 +1,74 @@
+package at.gv.egovernment.moa.id.commons.db.dao;
+
+import java.io.Serializable;
+import java.util.Date;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Lob;
+import javax.persistence.Table;
+
+import org.hibernate.annotations.DynamicUpdate;
+import org.hibernate.annotations.NamedQueries;
+import org.hibernate.annotations.NamedQuery;
+
+
+@Entity
+@DynamicUpdate(value=true)
+@Table(name = "assertionstore")
+@NamedQueries({
+ @NamedQuery(name="getAssertionWithArtifact", query = "select assertionstore from AssertionStore assertionstore where assertionstore.artifact = :artifact")
+})
+
+public class AssertionStore implements Serializable{
+
+ private static final long serialVersionUID = 1L;
+
+ @Id
+ @Column(name = "artifact", unique=true, nullable=false)
+ private String artifact;
+
+ @Column(name = "type", nullable=false)
+ private String type;
+
+ @Column(name = "assertion", nullable=false)
+ @Lob private byte [] assertion;
+
+ @Column(name = "datetime", nullable=false)
+ Date datatime;
+
+ public String getArtifact() {
+ return artifact;
+ }
+
+ public void setArtifact(String artifact) {
+ this.artifact = artifact;
+ }
+
+ public String getType() {
+ return type;
+ }
+
+ public void setType(String type) {
+ this.type = type;
+ }
+
+ public byte[] getAssertion() {
+ return assertion;
+ }
+
+ public void setAssertion(byte[] assertion) {
+ this.assertion = assertion;
+ }
+
+ public Date getDatatime() {
+ return datatime;
+ }
+
+ public void setDatatime(Date datatime) {
+ this.datatime = datatime;
+ }
+
+
+}
diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/ex/MOADatabaseException.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/ex/MOADatabaseException.java
new file mode 100644
index 000000000..169d31aac
--- /dev/null
+++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/id/commons/db/ex/MOADatabaseException.java
@@ -0,0 +1,22 @@
+package at.gv.egovernment.moa.id.commons.db.ex;
+
+public class MOADatabaseException extends Exception {
+
+ private static final long serialVersionUID = 1L;
+
+ public MOADatabaseException() {
+ super();
+ }
+
+ public MOADatabaseException(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public MOADatabaseException(String message) {
+ super(message);
+ }
+
+ public MOADatabaseException(Throwable cause) {
+ super(cause);
+ }
+}