| /******************************************************************************* |
| * Copyright (c) 2009 Cloudsmith Inc. 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: |
| * Cloudsmith Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.p2.ql; |
| |
| import java.util.Iterator; |
| |
| /** |
| * This is an expression that will need access to the global variable |
| * <code>everything</code>. |
| */ |
| public interface IContextExpression extends IExpression { |
| /** |
| * <p>Creates a new context to be passed to a subsequent evaluation. The context |
| * will have the variable 'everything' set to an expression that represents |
| * the <code>everything</code> iterator filtered for instances of <code>elementClass</code>.</p> |
| * <p>The values of the iterator will be copied if necessary (when everything is referenced |
| * more then once).</p> |
| * @param elementClass The class of the elements to extract from <code>everything</code> |
| * @param iterator The iterator that represents all queried material. |
| * @param params The parameters to use for the evaluation. |
| * @return A new evaluation context. |
| */ |
| IEvaluationContext createContext(Class elementClass, Iterator everything, Object[] params); |
| |
| /** |
| * <p>Creates a new context to be passed to a subsequent evaluation. The context |
| * will have the variable 'everything' set to an expression that represents |
| * the <code>everything</code> iterator filtered for instances of <code>elementClass</code>.</p> |
| * <p>The values of the iterator will be copied if necessary (when everything is referenced |
| * more then once).</p> |
| * @param elementClass The class of the elements to extract from <code>everything</code> |
| * @param iterator The iterator that represents all queried material. |
| * @param params The parameters to use for the evaluation. |
| * @param translations A translation support object to be assigned to the variable 'translations' |
| * @return A new evaluation context. |
| */ |
| IEvaluationContext createContext(Class elementClass, Iterator everything, Object[] params, ITranslationSupport translations); |
| } |
