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/*******************************************************************************
* Copyright (c) 2007, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Prashant Deva - Bug 194674 [prov] Provide write access to metadata repository
*******************************************************************************/
package org.eclipse.equinox.internal.p2.metadata.repository;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.equinox.p2.query.Collector;
import org.eclipse.equinox.p2.query.Query;
import org.eclipse.equinox.spi.p2.metadata.repository.AbstractMetadataRepository;
/**
* A metadata repository backed by an arbitrary URL.
*/
public class URLMetadataRepository extends AbstractMetadataRepository {
public static final String CONTENT_FILENAME = "content"; //$NON-NLS-1$
public static final String XML_EXTENSION = ".xml"; //$NON-NLS-1$
private static final String REPOSITORY_TYPE = URLMetadataRepository.class.getName();
private static final Integer REPOSITORY_VERSION = new Integer(1);
transient protected URL content;
protected HashSet units = new LinkedHashSet();
public static URL getActualLocation(URL base) {
return getActualLocation(base, XML_EXTENSION);
}
public static URL getActualLocation(URL base, String extension) {
if (extension == null) {
extension = XML_EXTENSION;
}
String spec = base.toExternalForm();
if (spec.endsWith(CONTENT_FILENAME + extension))
try {
return new URL(spec + extension);
} catch (MalformedURLException e1) {
return null;
}
if (spec.endsWith("/")) //$NON-NLS-1$
spec += CONTENT_FILENAME;
else
spec += "/" + CONTENT_FILENAME; //$NON-NLS-1$
try {
return new URL(spec + extension);
} catch (MalformedURLException e) {
return null;
}
}
public URLMetadataRepository() {
super();
}
public URLMetadataRepository(URL location, String name) {
super(name == null ? (location != null ? location.toExternalForm() : "") : name, REPOSITORY_TYPE, REPOSITORY_VERSION.toString(), location, null, null); //$NON-NLS-1$
content = getActualLocation(location);
}
protected URL getContentURL() {
return content;
}
public void initialize(RepositoryState state) {
this.name = state.Name;
this.type = state.Type;
this.version = state.Version.toString();
this.provider = state.Provider;
this.description = state.Description;
this.location = state.Location;
this.properties = state.Properties;
this.units.addAll(Arrays.asList(state.Units));
}
// Use this method to setup any transient fields etc after the object has been restored from a stream
public void initializeAfterLoad(URL repoLocation) {
this.location = repoLocation;
content = getActualLocation(location);
}
public boolean isModifiable() {
return false;
}
public Collector query(Query query, Collector collector, IProgressMonitor monitor) {
return query.perform(units.iterator(), collector);
}
}
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