+/*
+ * 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);
}