/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.wicket.examples.spring.common;
import java.util.Iterator;
/**
* interface for retrieving contacts from a database
*
* @author Igor Vaynberg (ivaynberg)
*
*/
public interface ContactDao
{
/**
* @return total number of contacts available
*/
int count();
/**
* @param qp
* sorting and paging info
* @return iterator over contacts
*/
Iterator<Contact> find(QueryParam qp);
/**
* @param id
* contact id
* @return contact with matching id
*/
Contact get(long id);
}