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/*
* Copyright (c) 2012, the Last.fm Java Project and Committers All rights
* reserved. Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the following
* conditions are met: - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following disclaimer. -
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution. THIS SOFTWARE IS
* PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.cyanogenmod.eleven.lastfm;
import java.util.HashMap;
import java.util.Map;
/**
* The <code>ItemFactoryBuilder</code> can be used to obtain {@link ItemFactory
* ItemFactories} for a specific type.
*
* @author Janni Kovacs
* @see ItemFactory
*/
final class ItemFactoryBuilder {
private final static ItemFactoryBuilder INSTANCE = new ItemFactoryBuilder();
@SuppressWarnings("rawtypes")
private final Map<Class, ItemFactory> factories = new HashMap<Class, ItemFactory>();
private ItemFactoryBuilder() {
// register default factories
addItemFactory(Album.class, Album.FACTORY);
addItemFactory(Artist.class, Artist.FACTORY);
addItemFactory(Image.class, Image.FACTORY);
}
/**
* Retrieve the instance of the <code>ItemFactoryBuilder</code>.
*
* @return the instance
*/
public static ItemFactoryBuilder getFactoryBuilder() {
return INSTANCE;
}
/**
* @param <T>
* @param itemClass
* @param factory
*/
public <T> void addItemFactory(final Class<T> itemClass, final ItemFactory<T> factory) {
factories.put(itemClass, factory);
}
/**
* Retrieves an {@link ItemFactory} for the given type, or <code>null</code>
* if no such factory was registered.
*
* @param itemClass the type's Class object
* @return the <code>ItemFactory</code> or <code>null</code>
*/
@SuppressWarnings("unchecked")
public <T> ItemFactory<T> getItemFactory(final Class<T> itemClass) {
return factories.get(itemClass);
}
}
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