/*
* Copyright 2002-2016 the original author or authors.
*
* 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 sample.dms;
/**
*
* @author Ben Alex
*
*/
public interface DocumentDao {
/**
* Creates an entry in the database for the element.
*
* @param element an unsaved element (the "id" will be updated after method is
* invoked)
*/
public void create(AbstractElement element);
/**
* Removes a file from the database for the specified element.
*
* @param file the file to remove (cannot be null)
*/
public void delete(File file);
/**
* Modifies a file in the database.
*
* @param file the file to update (cannot be null)
*/
public void update(File file);
/**
* Locates elements in the database which appear under the presented directory
*
* @param directory the directory (cannot be null - use
* {@link Directory#ROOT_DIRECTORY} for root)
* @return zero or more elements in the directory (an empty array may be returned -
* never null)
*/
public AbstractElement[] findElements(Directory directory);
}