Copyright (c) 2003, 2014 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2003, 2014 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.osgi.internal.loader.sources;

import java.net.URL;
import java.util.Collection;
import java.util.Enumeration;
import org.eclipse.osgi.internal.loader.BundleLoader;
import org.eclipse.osgi.internal.loader.ModuleClassLoader;

public class SingleSourcePackage extends PackageSource {
	private final BundleLoader supplier;

	public SingleSourcePackage(String id, BundleLoader supplier) {
		super(id);
		this.supplier = supplier;
	}

	@Override
	public SingleSourcePackage[] getSuppliers() {
		return new SingleSourcePackage[] {this};
	}

	public BundleLoader getLoader() {
		return supplier;
	}

	@Override
	public Class<?> loadClass(String name) throws ClassNotFoundException {
		return supplier.findLocalClass(name);
	}

	@Override
	public URL getResource(String name) {
		return supplier.findLocalResource(name);
	}

	@Override
	public Enumeration<URL> getResources(String name) {
		return supplier.findLocalResources(name);
	}

	@Override
	public boolean equals(Object source) {
		if (this == source)
			return true;
		if (!(source instanceof SingleSourcePackage))
			return false;
		SingleSourcePackage singleSource = (SingleSourcePackage) source;
		// we do an == test on id because the id is interned in the constructor of PackageSource
		return supplier == singleSource.supplier && id == singleSource.getId();
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + id.hashCode();
		result = prime * result + supplier.hashCode();
		return result;
	}

	@Override
	public Collection<String> listResources(String path, String filePattern) {
		ModuleClassLoader mcl = supplier.getModuleClassLoader();
		return mcl.listLocalResources(path, filePattern, 0);
	}
}