Package org.apache.wicket.spring.common.web

Source Code of org.apache.wicket.spring.common.web.ContactDataProvider

/*
* 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.spring.common.web;

import java.util.Iterator;

import org.apache.wicket.extensions.markup.html.repeater.util.SortableDataProvider;
import org.apache.wicket.spring.common.ContactDao;
import org.apache.wicket.spring.common.QueryParam;

/**
* Base class for contact data provider implementations. This class implements everything except
* retrieval of the dao object, this way we can isolate that for our examples.
*
* @author Igor Vaynberg (ivaynerg)
*
*/
public abstract class ContactDataProvider extends SortableDataProvider
{

  public ContactDataProvider()
  {
    setSort("firstName", true);
  }

  protected abstract ContactDao getContactDao();

  public final Iterator iterator(int first, int count)
  {
    QueryParam qp = new QueryParam(first, count, getSort().getProperty(), getSort()
        .isAscending());
    return getContactDao().find(qp);
  }

  public final int size()
  {
    return getContactDao().count();
  }
}
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