| /******************************************************************************* |
| * 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.metadata; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.osgi.framework.Version; |
| |
| /** |
| * Describes a capability as exposed or required by an installable unit |
| */ |
| public class ProvidedCapability { |
| private final String name; |
| private final String namespace; |
| private final Version version; |
| |
| ProvidedCapability(String namespace, String name, Version version) { |
| Assert.isNotNull(namespace); |
| Assert.isNotNull(name); |
| this.namespace = namespace; |
| this.name = name; |
| this.version = version == null ? Version.emptyVersion : version; |
| } |
| |
| public boolean equals(Object other) { |
| if (other instanceof ProvidedCapability) { |
| ProvidedCapability otherCapability = (ProvidedCapability) other; |
| return otherCapability.namespace.equals(namespace) && otherCapability.name.equals(name) && otherCapability.version.equals(version); |
| } |
| return false; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public String getNamespace() { |
| return namespace; |
| } |
| |
| public Version getVersion() { |
| return version; |
| } |
| |
| public int hashCode() { |
| return namespace.hashCode() * name.hashCode() * version.hashCode(); |
| } |
| |
| /** |
| * TODO The name of this method is backwards. A provided capability does not |
| * get satisfied - it is the required capability that is satisfied or not. It should be "satisfies" |
| * or "isSatisfied" |
| */ |
| public boolean isSatisfiedBy(RequiredCapability candidate) { |
| if (getName() == null || !getName().equals(candidate.getName())) |
| return false; |
| if (getNamespace() == null || !getNamespace().equals(candidate.getNamespace())) |
| return false; |
| return candidate.getRange().isIncluded(version); |
| } |
| |
| public String toString() { |
| return namespace + '/' + name + '/' + version; |
| } |
| |
| } |