bundles/org.eclipse.equinox.p2.engine/src/org/eclipse/equinox/p2/engine/query/IUProfilePropertyQuery.java

/*******************************************************************************
 *  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.engine.query;

import org.eclipse.equinox.internal.provisional.p2.metadata.query.IUPropertyQuery;
import org.eclipse.equinox.p2.engine.IProfile;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;

/**
 * A query that searches for {@link IInstallableUnit} instances that have
 * a property associated with the specified profile, whose value matches the provided value.
 * @since 2.0
 */
public class IUProfilePropertyQuery extends IUPropertyQuery {
	private IProfile profile;

	/**
	 * @noreference This method is not intended to be referenced by clients.
	 */
	public void setProfile(IProfile profile) {
		this.profile = profile;
	}

	/**
	 * Creates a new query on the given property name and value.
	 * Because the queryable for this query is typically the profile
	 * instance, we use a reference to the profile rather than the
	 * profile id for performance reasons.
	 */
	public IUProfilePropertyQuery(String propertyName, String propertyValue) {
		super(propertyName, propertyValue);
	}

	protected String getProperty(IInstallableUnit iu, String name) {
		if (profile == null)
			return null;
		return profile.getInstallableUnitProperty(iu, name);
	}
}