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/*******************************************************************************
* Copyright (c) 2008 Code 9 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:
* Code 9 - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.metadata.mirror;
import org.eclipse.equinox.internal.provisional.p2.metadata.query.Collector;
import org.eclipse.equinox.internal.provisional.p2.metadata.query.Query;
import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.internal.provisional.p2.metadata.query.InstallableUnitQuery;
import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepository;
/**
* A utility class that performs mirroring of metadatas between repositories.
*/
public class Mirroring {
public void validate(IMetadataRepository source, IMetadataRepository destination) {
if (source == null)
throw new IllegalStateException("Source repository is null."); //$NON-NLS-1$
if (destination == null)
throw new IllegalStateException("Destination repository is null."); //$NON-NLS-1$
if (!destination.isModifiable())
throw new IllegalStateException("Destination repository must be modifiable: " + destination.getLocation()); //$NON-NLS-1$
}
public void mirror(IMetadataRepository source, IMetadataRepository destination, String[] rootSpecs, boolean transitive) {
if (rootSpecs == null)
mirror(source, destination, InstallableUnitQuery.ANY, transitive);
else {
VersionRangedName[] roots = new VersionRangedName[rootSpecs.length];
for (int i = 0; i < rootSpecs.length; i++)
roots[i] = VersionRangedName.parse(rootSpecs[i]);
mirror(source, destination, new RangeQuery(roots), transitive);
}
}
public void mirror(IMetadataRepository source, IMetadataRepository destination, Query query, boolean transitive) {
validate(source, destination);
Collector result = source.query(query, new Collector(), null);
mirror(source, destination, (IInstallableUnit[]) result.toArray(IInstallableUnit.class), transitive);
}
private void mirror(IMetadataRepository source, IMetadataRepository destination, IInstallableUnit[] roots, boolean transitive) {
if (transitive)
roots = addTransitiveIUs(source, roots);
destination.addInstallableUnits(roots);
}
protected IInstallableUnit[] addTransitiveIUs(IMetadataRepository source, IInstallableUnit[] roots) {
// TODO Here we should create a profile from the source repo and discover all the
// IUs that are needed to support the given roots. For now just assume that the
// given roots are enough.
return roots;
}
}
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