| /******************************************************************************* |
| * Copyright (c) 2008, 2009 EclipseSource 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: |
| * EclipseSource - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.equinox.p2.cudf.metadata; |
| |
| /** |
| * A required capability represents some external constraint on an {@link IInstallableUnit}. |
| * Each capability represents something an {@link IInstallableUnit} needs that |
| * it expects to be provided by another {@link IInstallableUnit}. Capabilities are |
| * entirely generic, and are intended to be capable of representing anything that |
| * an {@link IInstallableUnit} may need either at install time, or at runtime. |
| * <p> |
| * Capabilities are segmented into namespaces. Anyone can introduce new |
| * capability namespaces. Some well-known namespaces are introduced directly |
| * by the provisioning framework. |
| * |
| * @see IInstallableUnit#NAMESPACE_IU_ID |
| * |
| * @noimplement This interface is not intended to be implemented by clients. |
| * @noextend This interface is not intended to be extended by clients. |
| */ |
| public interface IRequiredCapability { |
| |
| public String getName(); |
| |
| public VersionRange getRange(); |
| |
| public boolean equals(Object other); |
| |
| public boolean isNegation(); |
| |
| public boolean isOptional(); |
| |
| public int getArity(); |
| |
| public void setArity(int arity); |
| } |
