repair pre-update jpa passed to extensions

add getWithException and repair get() in singleQuery

Author: Gerald Unterrainer

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

@@ -184,6 +184,7 @@ private void fullUpdate(final Context ctx) throws IOException {
 		DaoTransaction<E> transaction = dao.getTransactionManager().beginTransaction(ctx);
 		P jpa = hu.getJpaById(ctx, transaction.getManager(), dao);
 		try {
+			P detachedJpa = orikaMapper.map(jpa, jpaType);
 			J json = jsonMapper.fromStringTo(jsonType, ctx.attribute(Attribute.REQUEST_BODY));
 			P mappedJpa = orikaMapper.map(json, jpaType);
 			mappedJpa.setId(jpa.getId());
@@ -192,11 +193,12 @@ private void fullUpdate(final Context ctx) throws IOException {
 
 			mappedJpa = extensions.runPreModify(ctx, makeAsyncExtensionContextFor(ctx), transaction.getManager(),
 					jpa.getId(), json, jpa, mappedJpa, executorService);
+
 			P persistedJpa = dao.update(transaction.getManager(), mappedJpa, hu.getReadTenantIdsFrom(ctx));
 
 			J r = orikaMapper.map(persistedJpa, jsonType);
 			r = extensions.runPostModify(ctx, makeAsyncExtensionContextFor(ctx), transaction.getManager(), jpa.getId(),
-					json, jpa, mappedJpa, persistedJpa, r, executorService);
+					json, detachedJpa, mappedJpa, persistedJpa, r, executorService);
 
 			ctx.attribute(Attribute.RESPONSE_OBJECT, r);
 

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

@@ -1,5 +1,6 @@
 package info.unterrainer.commons.httpserver.daos;
 
+import java.util.List;
 import java.util.Map;
 import java.util.function.Function;
 
@@ -30,6 +31,22 @@ protected <V> V withEntityManager(final Function<EntityManager, V> func) {
 	 * @return the selected entity
 	 */
 	public P get() {
+		return withEntityManager(em -> {
+			List<P> resultList = dao.coreDao
+					.getQuery(em, "o", null, "o.id = :id", Map.of("id", id), dao.type, null, false, null, readTenantIds)
+					.getResultList();
+			if (resultList.isEmpty())
+				return null;
+			return resultList.get(0);
+		});
+	}
+
+	/**
+	 * Get the selected entity or throw an exception if it wasn't found.
+	 *
+	 * @return the selected entity
+	 */
+	public P getOrException() {
 		return withEntityManager(em -> dao.coreDao
 				.getQuery(em, "o", null, "o.id = :id", Map.of("id", id), dao.type, null, false, null, readTenantIds)
 				.getSingleResult());