| /******************************************************************************* |
| * Copyright (c) 2005 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.osgi.internal.module; |
| |
| import org.eclipse.osgi.service.resolver.BundleDescription; |
| import org.eclipse.osgi.service.resolver.VersionConstraint; |
| |
| /* |
| * A companion to VersionConstraint from the state used while resolving |
| */ |
| public abstract class ResolverConstraint { |
| ResolverBundle bundle; |
| VersionConstraint constraint; |
| |
| ResolverConstraint(ResolverBundle bundle, VersionConstraint constraint) { |
| this.bundle = bundle; |
| this.constraint = constraint; |
| } |
| |
| // returns the Resolver bundle requiring the ResolverConstraint |
| ResolverBundle getBundle() { |
| return bundle; |
| } |
| |
| // returns the BundleDescription requiring the ResolverConstraint |
| BundleDescription getBundleDescription() { |
| return bundle.getBundle(); |
| } |
| |
| // returns whether this constraint is from an attached fragment |
| boolean isFromFragment() { |
| return constraint.getBundle().getHost() != null; |
| } |
| |
| // Same as VersionConstraint but does additinal permission checks |
| boolean isSatisfiedBy(VersionSupplier vs) { |
| if (!bundle.getResolver().getPermissionChecker().checkPermission(constraint, vs.getBaseDescription())) |
| return false; |
| return constraint.isSatisfiedBy(vs.getBaseDescription()); |
| } |
| |
| // returns the companion VersionConstraint object from the State |
| VersionConstraint getVersionConstraint() { |
| return constraint; |
| } |
| |
| // returns the name of this constraint |
| public String getName() { |
| return constraint.getName(); |
| } |
| |
| public String toString() { |
| return constraint.toString(); |
| } |
| |
| // returns whether this constraint is optional |
| abstract boolean isOptional(); |
| } |