| /******************************************************************************* |
| * Copyright (c) 2008, 2017 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 |
| * IBM - ongoing development |
| * Todor Boev |
| ******************************************************************************/ |
| package org.eclipse.equinox.p2.metadata; |
| |
| import java.util.Map; |
| import org.eclipse.equinox.p2.metadata.expression.IFilterExpression; |
| |
| /** |
| * Describes a capability that is exposed by an installable unit. These capabilities |
| * can satisfy the dependencies of other installable units, causing the unit |
| * providing the dependency to be installed. |
| * <p> |
| * Instances of this class are handle objects and do not necessarily |
| * reflect entities that exist in any particular profile or repository. These handle |
| * objects can be created using {@link MetadataFactory}. |
| * </p> |
| * |
| * @noimplement This interface is not intended to be implemented by clients. |
| * @noextend This interface is not intended to be extended by clients. |
| * @since 2.0 |
| * @see IRequirement |
| */ |
| public interface IProvidedCapability { |
| /** |
| * The name of the property under which the capability version is stored. |
| * |
| * Can be used with {@link #getProperties()}. The same value can be obtained with {@link #getVersion()} |
| * |
| * @since 2.4 |
| */ |
| String PROPERTY_VERSION = "version"; //$NON-NLS-1$ |
| |
| /** |
| * |
| * @return String the namespace of this capability. |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| String getNamespace(); |
| |
| /** |
| * |
| * @return String the attribute stored under a key equal to the {@link #getNamespace()} attribute of this capability. |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| String getName(); |
| |
| /** |
| * |
| * @return String the special {@link #PROPERTY_VERSION} attribute of this capability. |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| Version getVersion(); |
| |
| /** |
| * A full description of this capability including the name and the version. |
| * <p> |
| * Such a description can be used to match this capability with an {@link IFilterExpression LDAP filter} for example. |
| * |
| * @return An unmodifiable map |
| * @noreference This method is not intended to be referenced by clients. |
| * @since 2.4 |
| */ |
| Map<String, Object> getProperties(); |
| |
| /** |
| * Returns whether this provided capability is equal to the given object. |
| * |
| * This method returns <i>true</i> if: |
| * <ul> |
| * <li>Both this object and the given object are of type IProvidedCapability</li> |
| * <li>The result of {@link #getNamespace()} on both objects are equal</li> |
| * <li>The result of {@link #getProperties()} on both objects are equal</li> |
| * </ul> |
| */ |
| @Override |
| boolean equals(Object other); |
| } |