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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
*******************************************************************************/
package org.eclipse.equinox.internal.provisional.p2.ui;
import java.net.URI;
import org.eclipse.core.runtime.*;
import org.eclipse.equinox.internal.p2.core.helpers.ServiceHelper;
import org.eclipse.equinox.internal.p2.ui.ProvUIActivator;
import org.eclipse.equinox.internal.p2.ui.ProvUIMessages;
import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IArtifactRepositoryManager;
import org.eclipse.equinox.internal.provisional.p2.core.repository.IRepositoryManager;
import org.eclipse.equinox.internal.provisional.p2.query.*;
import org.eclipse.ui.statushandlers.StatusManager;
/**
* An object that adds queryable support to an artifact repository
* manager. It can be constructed to filter the repositories according to repository filter
* flags. When a query is provided, the object being queried is repository URL.
* Callers interested in only the resulting repository URL's can specify a null query,
* in which case the collector will be accepting all iterated URL's.
*/
public class QueryableArtifactRepositoryManager implements IQueryable {
int flags = IRepositoryManager.REPOSITORIES_ALL;
public QueryableArtifactRepositoryManager(int flags) {
this.flags = flags;
}
/**
* Iterates over the artifact repositories configured in this queryable.
* If a query is specified, the query is run on each URI, passing any URIs that satisfy the
* query to the provided collector. If no query is specified, all repository URIs iterated are passed
* to the collector.
* <p>
* This method is long-running; progress and cancellation are provided
* by the given progress monitor.
* </p>
*
* @param query The query to perform on the URIs, or <code>null</code> if all URIs should
* be accepted.
* @param result Collects the repository URIs
* @param monitor a progress monitor, or <code>null</code> if progress
* reporting is not desired
* @return The collector argument
*/
public Collector query(Query query, Collector result, IProgressMonitor monitor) {
IArtifactRepositoryManager manager = (IArtifactRepositoryManager) ServiceHelper.getService(ProvUIActivator.getContext(), IArtifactRepositoryManager.class.getName());
if (manager == null) {
ProvUI.reportStatus(new Status(IStatus.ERROR, ProvUIActivator.PLUGIN_ID, ProvUIMessages.ProvisioningUtil_NoRepositoryManager), StatusManager.SHOW | StatusManager.LOG);
return result;
}
URI[] repoLocations = manager.getKnownRepositories(flags);
if (monitor == null)
monitor = new NullProgressMonitor();
monitor.beginTask(ProvUIMessages.QueryableArtifactRepositoryManager_RepositoryQueryProgress, repoLocations.length);
for (int i = 0; i < repoLocations.length; i++) {
if (query == null || query.isMatch(repoLocations[i]))
result.accept(repoLocations[i]);
monitor.worked(1);
}
monitor.done();
return result;
}
}
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