DataProvider.java

/**
 * Copyright 2011 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 org.bricket.plugin.genericdomain.web;

import java.util.Iterator;

import org.apache.wicket.extensions.markup.html.repeater.util.SortableDataProvider;
import org.apache.wicket.injection.web.InjectorHolder;
import org.apache.wicket.model.IModel;
import org.bricket.plugin.genericdomain.domain.DomainObject;

/**
 * Generische Dataprovider, der die üblichen Zugriffe auf Domainobjekte eines
 * Typs regelt. Hauptsachlich für Auflistung in Tabellen und Aufzählungen.
 * Zuerst erstellt für die Ajaxfallbacktable
 * 
 * @author Ingo Renner
 * @author Henning Teek
 * 
 * @param <T>
 */
public abstract class DataProvider<T extends DomainObject> extends SortableDataProvider<T> {
    private final Class<T> type;

    public DataProvider(Class<T> type) {
        InjectorHolder.getInjector().inject(this);
        this.type = type;
    }

    @Override
    public void detach() {
    }

    @Override
    public abstract Iterator<? extends T> iterator(int from, int count);

    @Override
    public IModel<T> model(T object) {
        return new DomainObjectModel<T>((T) object);
    }

    @Override
    public abstract int size();

    public Class<T> getType() {
        return type;
    }
}