add delete statements to singlebuilder

Author: Gerald Unterrainer

src/main/java/info/unterrainer/commons/httpserver/GenericHandlerGroup.java

@@ -201,7 +201,7 @@ private void delete(final Context ctx) {
 		DaoTransaction<E> transaction = daoTransactionManager.beginTransaction();
 
 		id = extensions.runPreDelete(ctx, transaction.getManager(), id, executorService);
-		dao.delete(id);
+		dao._delete(id);
 		ctx.status(204);
 		extensions.runPostDelete(ctx, transaction.getManager(), id, executorService);
 

src/main/java/info/unterrainer/commons/httpserver/daos/BasicDao.java

@@ -20,7 +20,7 @@ ListJson<P> getList(E em, long offset, long size, String selectClause, String jo
 
 	UpsertResult<P> upsert(TypedQuery<P> query, P entity);
 
-	void delete(Long id);
+	void _delete(Long id);
 
 	P _getById(E em, Long id);
 
@@ -32,5 +32,5 @@ ListJson<P> getList(E em, long offset, long size, String selectClause, String jo
 
 	UpsertResult<P> upsert(E em, TypedQuery<P> query, P entity);
 
-	void delete(E em, Long id);
+	void _delete(E em, Long id);
 }

src/main/java/info/unterrainer/commons/httpserver/daos/BasicJpqlDao.java

@@ -130,14 +130,14 @@ public UpsertResult<P> upsert(final EntityManager em, final TypedQuery<P> query,
 	}
 
 	@Override
-	public void delete(final Long id) {
+	public void _delete(final Long id) {
 		Transactions.withNewTransaction(emf, em -> {
-			delete(em, id);
+			_delete(em, id);
 		});
 	}
 
 	@Override
-	public void delete(final EntityManager em, final Long id) {
+	public void _delete(final EntityManager em, final Long id) {
 		em.createQuery(String.format("DELETE FROM %s AS o WHERE o.id = :id", type.getSimpleName()))
 				.setParameter("id", id)
 				.executeUpdate();

src/main/java/info/unterrainer/commons/httpserver/daos/SingleQueryBuilder.java

@@ -17,4 +17,12 @@ public P get() {
 			return dao._getById(id);
 		return dao._getById(entityManager, id);
 	}
+
+	public void delete() {
+		if (entityManager == null) {
+			dao._delete(id);
+			return;
+		}
+		dao._delete(entityManager, id);
+	}
 }