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/*******************************************************************************
* 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
* IBM - ongoing development
******************************************************************************/
package org.eclipse.equinox.p2.metadata;
import org.eclipse.equinox.internal.provisional.p2.metadata.Version;
/**
* Describes a capability as exposed or required by an installable unit
*
* @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
*/
public interface IProvidedCapability {
public String getName();
public String getNamespace();
public Version getVersion();
/**
* Returns whether this provided capability satisfies the given required capability.
* @return <code>true</code> if this capability satisfies the given required
* capability, and <code>false</code> otherwise.
*
* This method must maintain the following semantics:
* <ul>
* <li> If the provided capability and the candidate have different names,
* return false
* <li> If the provided capability and the candidate have different namespaces.
* return false
* <li> If the candidate's version range includes the provided capability's
* version, return true
* <li> otherwise, return false
* </ul>
*
*/
public boolean satisfies(IRequirement candidate);
/**
* 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> The result of <b>getName()</b> on both objects are equal
* <li> The result of <b>getNamespace()</b> on both objects are equal
* <li> The result of <b>getVersion()</b> on both objects are equal
* </ul>
*/
public boolean equals(Object other);
}
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