ResourceDirectoryStream.java

/*
 * Copyright 2013-2014 Odysseus Software GmbH
 *
 * 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.musicmount.io;

import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Path;
import java.util.Iterator;

public class ResourceDirectoryStream implements DirectoryStream<Resource> {
	final ResourceProvider provider;
	final DirectoryStream<Path> delegate;

	public ResourceDirectoryStream(ResourceProvider provider, DirectoryStream<Path> delegate) {
		this.provider = provider;
		this.delegate = delegate;
	}

	@Override
	public Iterator<Resource> iterator() {
		return new Iterator<Resource>() {
			final Iterator<Path> iterator = delegate.iterator();
			@Override
			public boolean hasNext() {
				return iterator.hasNext();
			}
			@Override
			public Resource next() {
				return provider.newResource(iterator.next());
			}
			public void remove() {
				iterator.remove();
			}
		};
	}

	@Override
	public void close() throws IOException {
		delegate.close();
	}
}