pagedsortablecarlist.java

一个使用struts+hibernate+spring开发的完的网站源代码。

/*
 * Copyright 2004 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.myfaces.examples.listexample;

import java.util.*;

public class PagedSortableCarList extends SortableList
{
    private List cars = new ArrayList();

    public PagedSortableCarList()
    {
        super("type");
        for (int i = 100; i < 900; i++)
        {
            cars.add(new SimpleCar(i, "Car Type " + i, (i%2==0) ? "blue" : "green"));
        }
    }

    public List getCars()
    {
        sort(getSort(), isAscending());
        return cars;
    }

    protected boolean isDefaultAscending(String sortColumn)
    {
        return true;
    }

    protected void sort(final String column, final boolean ascending)
    {
        Comparator comparator = new Comparator()
        {
            public int compare(Object o1, Object o2)
            {
                SimpleCar c1 = (SimpleCar)o1;
                SimpleCar c2 = (SimpleCar)o2;
                if (column == null)
                {
                    return 0;
                }
                if (column.equals("type"))
                {
                    return ascending ? c1.getType().compareTo(c2.getType()) : c2.getType().compareTo(c1.getType());
                }
                else if (column.equals("color"))
                {
                    return ascending ? c1.getColor().compareTo(c2.getColor()) : c2.getColor().compareTo(c1.getColor());
                }
                else return 0;
            }
        };
        Collections.sort(cars, comparator);
    }

}