Archives/Athou_commafeed
1
0
Fork 1
mirror of https://github.com/Athou/commafeed.git synced 2026-03-21 21:37:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

unit of work refactoring

Browse Source
This commit is contained in:
Athou
2014-12-12 08:57:50 +01:00
parent ccf18758fb
commit 2e475c35cc
7 changed files with 67 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/main/java/com/commafeed/backend/dao/UnitOfWork.java
View File

@@ -5,17 +5,26 @@ import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.context.internal.ManagedSessionContext;
public abstract class UnitOfWork<T> {
public class UnitOfWork {
private SessionFactory sessionFactory;
public UnitOfWork(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
@FunctionalInterface
public static interface SessionRunner {
public void runInSession();
}
protected abstract T runInSession() throws Exception;
@FunctionalInterface
public static interface SessionRunnerReturningValue<T> {
public T runInSession();
}
public T run() {
public static void run(SessionFactory sessionFactory, SessionRunner sessionRunner) {
run(sessionFactory, () -> {
sessionRunner.runInSession();
return null;
});
}
public static <T> T run(SessionFactory sessionFactory, SessionRunnerReturningValue<T> sessionRunner) {
final Session session = sessionFactory.openSession();
if (ManagedSessionContext.hasBind(sessionFactory)) {
throw new IllegalStateException("Already in a unit of work!");
@@ -25,11 +34,11 @@ public abstract class UnitOfWork<T> {
ManagedSessionContext.bind(session);
session.beginTransaction();
try {
t = runInSession();
t = sessionRunner.runInSession();
commitTransaction(session);
} catch (Exception e) {
rollbackTransaction(session);
this.<RuntimeException> rethrow(e);
UnitOfWork.<RuntimeException> rethrow(e);
}
} finally {
session.close();
@@ -38,14 +47,14 @@ public abstract class UnitOfWork<T> {
return t;
}
private void rollbackTransaction(Session session) {
private static void rollbackTransaction(Session session) {
final Transaction txn = session.getTransaction();
if (txn != null && txn.isActive()) {
txn.rollback();
}
}
private void commitTransaction(Session session) {
private static void commitTransaction(Session session) {
final Transaction txn = session.getTransaction();
if (txn != null && txn.isActive()) {
txn.commit();
@@ -53,7 +62,7 @@ public abstract class UnitOfWork<T> {
}
@SuppressWarnings("unchecked")
private <E extends Exception> void rethrow(Exception e) throws E {
private static <E extends Exception> void rethrow(Exception e) throws E {
throw (E) e;
}