| /******************************************************************************* |
| * Copyright (c) 2007, 2009 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 |
| * EclipseSource - ongoing development |
| *******************************************************************************/ |
| package org.eclipse.equinox.internal.p2.metadata; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.equinox.p2.metadata.IProvidedCapability; |
| import org.eclipse.equinox.p2.metadata.Version; |
| import org.eclipse.equinox.p2.metadata.expression.IMemberProvider; |
| |
| /** |
| * Describes a capability as exposed or required by an installable unit |
| */ |
| public class ProvidedCapability implements IProvidedCapability, IMemberProvider { |
| public static final String MEMBER_NAME = "name"; //$NON-NLS-1$ |
| public static final String MEMBER_VERSION = "version"; //$NON-NLS-1$ |
| public static final String MEMBER_NAMESPACE = "namespace"; //$NON-NLS-1$ |
| |
| private final String name; |
| private final String namespace; |
| private final Version version; |
| |
| public 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 == null) |
| return false; |
| if (!(other instanceof IProvidedCapability)) |
| return false; |
| IProvidedCapability otherCapability = (IProvidedCapability) other; |
| if (!(namespace.equals(otherCapability.getNamespace()))) |
| return false; |
| if (!(name.equals(otherCapability.getName()))) |
| return false; |
| return version.equals(otherCapability.getVersion()); |
| } |
| |
| 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(); |
| } |
| |
| public String toString() { |
| return namespace + '/' + name + '/' + version; |
| } |
| |
| public Object getMember(String memberName) { |
| // It is OK to use identity comparisons here since |
| // a) All constant valued strings are always interned |
| // b) The Member constructor always interns the name |
| // |
| if (MEMBER_NAME == memberName) |
| return name; |
| if (MEMBER_VERSION == memberName) |
| return version; |
| if (MEMBER_NAMESPACE == memberName) |
| return namespace; |
| throw new IllegalArgumentException("No such member: " + memberName); //$NON-NLS-1$ |
| } |
| } |