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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
******************************************************************************/
package org.eclipse.equinox.internal.p2.metadata;
import org.eclipse.equinox.internal.provisional.p2.metadata.IProvidedCapability;
import org.eclipse.equinox.internal.provisional.p2.metadata.VersionRange;
import org.eclipse.equinox.p2.metadata.IInstallableUnit;
import org.eclipse.equinox.p2.metadata.IRequirement;
import org.eclipse.equinox.p2.query.IMatchQuery;
/**
* 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 extends IMatchQuery<IInstallableUnit>, IRequirement {
// public String getFilter();
public String getName();
public String getNamespace();
/**
* Returns the range of versions that satisfy this required capability. Returns
* an empty version range ({@link VersionRange#emptyRange} if any version
* will satisfy the capability.
* @return the range of versions that satisfy this required capability.
*/
public VersionRange getRange();
public boolean equals(Object other);
public boolean satisfiedBy(IProvidedCapability cap);
}
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