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/*******************************************************************************
* Copyright (c) 2007 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
*******************************************************************************/
package org.eclipse.equinox.internal.p2.artifact.repository;
import org.eclipse.core.runtime.*;
import org.eclipse.equinox.p2.artifact.repository.*;
import org.eclipse.equinox.p2.metadata.IArtifactKey;
/**
* Base class for all requests on an {@link IArtifactRepository}.
*/
public abstract class ArtifactRequest implements IArtifactRequest {
private static final Status DEFAULT_STATUS = new Status(IStatus.ERROR, Activator.ID, "default"); //$NON-NLS-1$
protected IArtifactKey artifact;
protected String resolvedKey;
protected IArtifactRepository source;
protected IStatus result = DEFAULT_STATUS;
protected IArtifactDescriptor descriptor;
public ArtifactRequest(IArtifactKey key) {
artifact = key;
// TODO do we need to make this configurable? for now set default request handler to ECF
}
public IArtifactKey getArtifactKey() {
return artifact;
}
public IArtifactDescriptor getArtifactDescriptor() {
return descriptor;
}
/**
* Returns the result of the previous call to {@link #perform(IProgressMonitor)},
* or <code>null</code> if perform has never been called.
*
* @return The result of the previous perform call.
*/
public IStatus getResult() {
if (result == DEFAULT_STATUS)
return new Status(IStatus.ERROR, Activator.ID, "No repository found containing: " + getArtifactKey().toString());
return result;
}
protected IArtifactRepository getSourceRepository() {
return source;
}
/**
* Performs the artifact request, and sets the result status.
*
* @param monitor a progress monitor, or <code>null</code> if progress
* reporting is not desired
*/
abstract public void perform(IProgressMonitor monitor);
/**
* Sets the descriptor to use when processing this request.
*
* @param value The descriptor to use when processing this request
*/
public void setDescriptor(IArtifactDescriptor value) {
if (!value.getArtifactKey().equals(artifact))
throw new IllegalArgumentException("Descriptor's key must match the request's key"); //$NON-NLS-1$
descriptor = value;
if (artifact == null)
artifact = value.getArtifactKey();
}
/**
* Sets the result of an invocation of {@link #perform(IProgressMonitor)}.
* This method is called by subclasses to set the result status for
* this request.
*
* @param value The result status
*/
protected void setResult(IStatus value) {
result = value;
}
public void setSourceRepository(IArtifactRepository value) {
source = value;
}
}
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