| /******************************************************************************* |
| * 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.model; |
| |
| import org.eclipse.equinox.internal.provisional.p2.query.Collector; |
| import org.eclipse.equinox.internal.provisional.p2.query.IQueryable; |
| import org.eclipse.equinox.internal.provisional.p2.ui.policy.IQueryProvider; |
| import org.eclipse.equinox.internal.provisional.p2.ui.query.QueriedElement; |
| import org.eclipse.equinox.internal.provisional.p2.ui.query.QueryContext; |
| |
| /** |
| * Collector that assigns a query provider and the queryable |
| * who was performing the query to the elements |
| * as they are accepted. |
| * |
| * @since 3.4 |
| */ |
| public class QueriedElementCollector extends Collector { |
| |
| protected IQueryProvider queryProvider; |
| protected IQueryable queryable; |
| protected QueryContext queryContext; |
| |
| public QueriedElementCollector(IQueryProvider queryProvider, IQueryable queryable, QueryContext queryContext) { |
| this.queryProvider = queryProvider; |
| this.queryable = queryable; |
| this.queryContext = queryContext; |
| } |
| |
| /** |
| * 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 QueriedElement) { |
| QueriedElement element = (QueriedElement) match; |
| element.setQueryProvider(queryProvider); |
| if (!element.knowsQueryable()) { |
| element.setQueryable(queryable); |
| } |
| if (element.getQueryContext() == null) |
| element.setQueryContext(queryContext); |
| } |
| return super.accept(match); |
| } |
| } |