| /******************************************************************************* |
| * 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.query; |
| |
| import org.eclipse.equinox.internal.p2.ui.model.AvailableIUElement; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit; |
| import org.eclipse.equinox.internal.provisional.p2.query.IQueryable; |
| import org.eclipse.equinox.internal.provisional.p2.ui.model.CategoryElement; |
| import org.eclipse.equinox.internal.provisional.p2.ui.model.QueriedElementCollector; |
| import org.eclipse.equinox.internal.provisional.p2.ui.operations.ProvisioningUtil; |
| import org.eclipse.equinox.internal.provisional.p2.ui.policy.IQueryProvider; |
| |
| /** |
| * Collector that examines available IU's and wraps them in an |
| * element representing either a category an IU. |
| * |
| * @since 3.4 |
| */ |
| public class AvailableIUCollector extends QueriedElementCollector { |
| |
| private boolean makeCategories; |
| |
| public AvailableIUCollector(IQueryProvider queryProvider, IQueryable queryable, boolean makeCategories) { |
| super(queryProvider, queryable); |
| this.makeCategories = makeCategories; |
| } |
| |
| /** |
| * Accepts a result that matches the query criteria. |
| * |
| * @param match an object matching the query |
| * @return <code>true</code> if the query should continue, |
| * or <code>false</code> to indicate the query should stop. |
| */ |
| public boolean accept(Object match) { |
| if (!(match instanceof IInstallableUnit)) |
| return super.accept(match); |
| IInstallableUnit iu = (IInstallableUnit) match; |
| if (makeCategories && isCategory(iu)) |
| return super.accept(new CategoryElement(iu)); |
| return super.accept(makeDefaultElement(iu)); |
| } |
| |
| protected Object makeDefaultElement(IInstallableUnit iu) { |
| return new AvailableIUElement(iu, null); |
| } |
| |
| protected boolean isCategory(IInstallableUnit iu) { |
| return ProvisioningUtil.isCategory(iu); |
| } |
| |
| protected boolean makeCategory() { |
| return makeCategories; |
| } |
| } |