1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.syncope.core.logic;
20
21 import java.lang.reflect.Method;
22 import org.apache.syncope.common.lib.to.EntityTO;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
25 import org.springframework.transaction.annotation.Transactional;
26
27 /**
28 * Superclass for all business logic modules.
29 *
30 * @param <T> transfer object used for input / output
31 */
32 public abstract class AbstractLogic<T extends EntityTO> {
33
34 protected static final Logger LOG = LoggerFactory.getLogger(AbstractLogic.class);
35
36 /**
37 * Resolves stored bean (if existing) referred by the given CUD method.
38 * Read-only methods will be unresolved for performance reasons.
39 *
40 * @param method method.
41 * @param args method arguments.
42 * @return referred stored bean.
43 * @throws UnresolvedReferenceException in case of failures, read-only methods and unresolved bean.
44 */
45 public T resolveBeanReference(final Method method, final Object... args) throws UnresolvedReferenceException {
46 final Transactional transactional = method.getAnnotation(Transactional.class);
47 if (transactional != null && transactional.readOnly()) {
48 throw new UnresolvedReferenceException();
49 }
50 return resolveReference(method, args);
51 }
52
53 protected abstract T resolveReference(Method method, Object... args) throws UnresolvedReferenceException;
54 }