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/*******************************************************************************
* Copyright (c) 2007, 2009 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.p2.metadata.query;
import org.eclipse.equinox.internal.provisional.p2.metadata.Version;
import org.eclipse.equinox.internal.provisional.p2.metadata.VersionRange;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.p2.metadata.IVersionedId;
import org.eclipse.equinox.p2.query.MatchQuery;
/**
* A query that matches on the id and version of an {@link IInstallableUnit}.
*/
public class InstallableUnitQuery extends MatchQuery<IInstallableUnit> {
/**
* A convenience query that will match any {@link IInstallableUnit}
* it encounters.
*/
public static final InstallableUnitQuery ANY = new InstallableUnitQuery((String) null);
private String id;
private final VersionRange range;
/**
* Creates a query that will match any {@link IInstallableUnit} with the given
* id, regardless of version.
*
* @param id The installable unit id to match, or <code>null</code> to match any id
*/
public InstallableUnitQuery(String id) {
this.id = id;
this.range = null;
}
/**
* Creates a query that will match any {@link IInstallableUnit} with the given
* id, and whose version falls in the provided range.
*
* @param id The installable unit id to match, or <code>null</code> to match any id
* @param range The version range to match
*/
public InstallableUnitQuery(String id, VersionRange range) {
this.id = id;
this.range = range;
}
/**
* Creates a query that will match any {@link IInstallableUnit} with the given
* id and version.
*
* @param id The installable unit id to match, or <code>null</code> to match any id
* @param version The precise version that a matching unit must have
*/
public InstallableUnitQuery(String id, Version version) {
this.id = id;
this.range = (version == null || Version.emptyVersion.equals(version)) ? null : new VersionRange(version, true, version, true);
}
/**
* Creates a query that will match any {@link IInstallableUnit} with the given
* id and version.
*
* @param versionedId The precise id/version combination that a matching unit must have
*/
public InstallableUnitQuery(IVersionedId versionedId) {
this(versionedId.getId(), versionedId.getVersion());
}
/**
* Returns the id that this query will match against.
* @return The installable unit it
*/
public String getId() {
return id;
}
/**
* Returns the version range that this query will match against.
* @return The installable unit version range.
*/
public VersionRange getRange() {
return range;
}
/* (non-Javadoc)
* @see org.eclipse.equinox.p2.query2.Query#isMatch(java.lang.Object)
*/
public boolean isMatch(IInstallableUnit candidate) {
if (id != null && !id.equals(candidate.getId()))
return false;
if (range != null && !range.isIncluded(candidate.getVersion()))
return false;
return true;
}
}
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