| /******************************************************************************* |
| * 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.p2.ui.sdk; |
| |
| import java.util.Iterator; |
| import org.eclipse.equinox.internal.provisional.p2.core.ProvisionException; |
| import org.eclipse.equinox.internal.provisional.p2.engine.IProfile; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.query.IUPropertyQuery; |
| import org.eclipse.equinox.internal.provisional.p2.query.Collector; |
| import org.eclipse.equinox.internal.provisional.p2.ui.operations.ProvisioningUtil; |
| |
| /** |
| * A query that searches for {@link IInstallableUnit} instances that have |
| * a property associated with the specified profile, whose value matches the provided value. |
| * Uses the profile id instead of the profile to reference the profile. |
| * The profile instance is cached only during the duration of the query. |
| * This query is used instead of IUProfilePropertyQuery because we pass |
| * this query to the automatic update checker and it will be referenced during |
| * the life of the platform. |
| */ |
| public class IUProfilePropertyByIdQuery extends IUPropertyQuery { |
| private String profileId; |
| private IProfile cachedProfile; |
| |
| /** |
| * Creates a new query on the given property name and value. |
| */ |
| public IUProfilePropertyByIdQuery(String profileId, String propertyName, String propertyValue) { |
| super(propertyName, propertyValue); |
| this.profileId = profileId; |
| } |
| |
| protected String getProperty(IInstallableUnit iu, String name) { |
| IProfile profile = getProfile(); |
| if (profile == null) |
| return null; |
| return profile.getInstallableUnitProperty(iu, name); |
| } |
| |
| private IProfile getProfile() { |
| if (cachedProfile == null) |
| try { |
| cachedProfile = ProvisioningUtil.getProfile(profileId); |
| } catch (ProvisionException e) { |
| // ignore, this will return null |
| } |
| return cachedProfile; |
| } |
| |
| public Collector perform(Iterator iterator, Collector result) { |
| Collector collector = super.perform(iterator, result); |
| cachedProfile = null; |
| return collector; |
| } |
| } |