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/*******************************************************************************
* Copyright (c) 2007, 2010 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
* Cloudsmith Inc. - IMemberProvider access.
*******************************************************************************/
package org.eclipse.equinox.p2.repository.artifact.spi;
import java.util.Arrays;
import java.util.Map;
import org.eclipse.equinox.internal.p2.core.helpers.OrderedProperties;
import org.eclipse.equinox.p2.metadata.IArtifactKey;
import org.eclipse.equinox.p2.metadata.expression.IMemberProvider;
import org.eclipse.equinox.p2.repository.artifact.*;
/**
* This represents information about a given artifact stored on a particular byte server.
* @since 2.0
*/
public class ArtifactDescriptor implements IArtifactDescriptor, IMemberProvider {
public static final String MEMBER_ARTIFACT_KEY = "artifactKey"; //$NON-NLS-1$
public static final String MEMBER_PROCESSING_STEPS = "processingSteps"; //$NON-NLS-1$
public static final String MEMBER_PROPERTIES = "properties"; //$NON-NLS-1$
public static final String MEMBER_REPOSITORY = "repository"; //$NON-NLS-1$
private static final IProcessingStepDescriptor[] EMPTY_STEPS = new ProcessingStepDescriptor[0];
protected IArtifactKey key; // The key associated with this artifact
// The list of post processing steps that must be applied one the artifact once it
// has been downloaded (e.g, unpack, then md5 checksum, then...)
protected IProcessingStepDescriptor[] processingSteps = EMPTY_STEPS;
protected Map<String, String> properties = new OrderedProperties();
private transient IArtifactRepository repository;
/**
* Creates a new artifact descriptor with the same key, properties, repository,
* and processing steps as the provided base descriptor.
*
* @param base the descriptor to use as a template for this new descriptor
*/
public ArtifactDescriptor(IArtifactDescriptor base) {
super();
key = base.getArtifactKey();
setProcessingSteps(base.getProcessingSteps());
properties.putAll(base.getProperties());
repository = base.getRepository();
}
/**
* Returns a new artifact descriptor that uses the provided artifact key
*
* @param key The artifact key corresponding to this descriptor
*/
public ArtifactDescriptor(IArtifactKey key) {
super();
this.key = key;
}
/* (non-Javadoc)
* @see org.eclipse.equinox.p2.repository.artifact.IArtifactDescriptor#getArtifactKey()
*/
@Override
public IArtifactKey getArtifactKey() {
return key;
}
@Override
public String getProperty(String propertyKey) {
return properties.get(propertyKey);
}
public void setProperty(String key, String value) {
if (value == null)
properties.remove(key);
else
properties.put(key, value);
}
public void addProperties(Map<String, String> additionalProperties) {
properties.putAll(additionalProperties);
}
/**
* Returns a read-only collection of the properties of the artifact descriptor.
* @return the properties of this artifact descriptor.
*/
@Override
public Map<String, String> getProperties() {
return OrderedProperties.unmodifiableProperties(properties);
}
@Override
public IProcessingStepDescriptor[] getProcessingSteps() {
return processingSteps;
}
public void setProcessingSteps(IProcessingStepDescriptor[] value) {
processingSteps = value == null || value.length == 0 ? EMPTY_STEPS : value;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
// Other implementations of IArtifactDescriptor must not be considered equal
if (!(obj.getClass().equals(getClass())))
return false;
ArtifactDescriptor other = (ArtifactDescriptor) obj;
if (key == null) {
if (other.getArtifactKey() != null)
return false;
} else if (!key.equals(other.getArtifactKey()))
return false;
if (!Arrays.equals(processingSteps, other.getProcessingSteps()))
return false;
String format = getProperty(FORMAT);
String otherFormat = other.getProperty(FORMAT);
if (format != null ? !format.equals(otherFormat) : otherFormat != null)
return false;
return true;
}
@Override
public int hashCode() {
String format = getProperty(FORMAT);
final int prime = 31;
int result = 1;
result = prime * result + ((key == null) ? 0 : key.hashCode());
result = prime * result + Arrays.asList(processingSteps).hashCode();
result = prime * result + (format != null ? format.hashCode() : 0);
return result;
}
@Override
public IArtifactRepository getRepository() {
return repository;
}
public void setRepository(IArtifactRepository value) {
repository = value;
}
@Override
public String toString() {
String format = getProperty(IArtifactDescriptor.FORMAT);
if (format == null)
return "canonical: " + key.toString(); //$NON-NLS-1$
return format + ": " + key.toString(); //$NON-NLS-1$
}
@Override
public Object getMember(String memberName) {
if (memberName == MEMBER_ARTIFACT_KEY)
return key;
if (memberName == MEMBER_PROPERTIES)
return properties;
if (memberName == MEMBER_PROCESSING_STEPS)
return processingSteps;
if (memberName == MEMBER_REPOSITORY)
return repository;
throw new IllegalArgumentException("No such member: " + memberName); //$NON-NLS-1$
}
}
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