Add dep folder

[lgpl/argeo-commons.git] / server / runtime / org.argeo.server.core / src / main / java / org / argeo / server / dao / LightDaoSupport.java

diff --git a/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/dao/LightDaoSupport.java b/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/dao/LightDaoSupport.java
index fc40c60e694439d57a10237faac8cb1e68cc194d..6ea1b754dfaa253c2ebcef76e7711e90f83d138a 100644 (file)
--- a/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/dao/LightDaoSupport.java
+++ b/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/dao/LightDaoSupport.java
@@ -1,15 +1,36 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.argeo.server.dao;
 
 import java.util.List;
 
+/** Minimal generic DAO for easy to implements objects <-> storage mapping. */
 public interface LightDaoSupport {
+       /** Retrieve an object of a given type by its unique key. */
        public <T> T getByKey(Class<T> clss, Object key);
 
+       /** Retrieve an object of a given type by the value of one of its fields. */
        public <T> T getByField(Class<T> clss, String field, Object value);
 
+       /** List all objects, optionally filtering them (implementation dependent) */
        public <T> List<T> list(Class<T> clss, Object filter);
 
+       /** Lis all supported object types. */
        public List<Class<?>> getSupportedClasses();
 
+       /** Save or update an object */
        public void saveOrUpdate(Object key, Object value, Class<?> clss);
 }