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// Copyright 2007, 2008 The Apache Software Foundation
//
// 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.apache.tapestry5.integration.app1.services;
import org.apache.tapestry5.integration.app1.data.ToDoItem;
import java.util.List;
public interface ToDoDatabase
{
/**
* Adds an item to the database, first assigning a unique id to the item.
*/
void add(ToDoItem item);
/**
* Finds all items, sorted ascending by each item's order property.
*/
List<ToDoItem> findAll();
/**
* Updates an existing item.
*
* @param item
* @throws RuntimeException if the item does not exist
*/
void update(ToDoItem item);
/**
* Resets the database, clearing out all data, re-adding base data.
*/
void reset();
/**
* Deletes all items from the database.
*/
void clear();
/**
* Removes an existing item
*
* @param itemId item to remove
* @throws RuntimeException if the item does not exist
*/
void remove(long itemId);
}