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/*******************************************************************************
* Copyright (c) 2009 Tasktop Technologies 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:
* Tasktop Technologies - initial API and implementation
* Sonatype, Inc. - support for versioned IUs
*******************************************************************************/
package org.eclipse.m2e.internal.discovery.strategy;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.equinox.internal.p2.discovery.compatibility.ConnectorDiscoveryExtensionReader;
import org.eclipse.equinox.internal.p2.discovery.model.CatalogItem;
import org.eclipse.equinox.internal.p2.discovery.model.FeatureFilter;
import org.eclipse.equinox.internal.p2.discovery.model.Icon;
import org.eclipse.equinox.internal.p2.discovery.model.Overview;
import org.eclipse.equinox.internal.p2.discovery.model.Tag;
import org.eclipse.equinox.internal.p2.discovery.model.ValidationException;
import org.eclipse.m2e.internal.discovery.Messages;
/*
* ConnectorDiscoveryExtensionReader assumes that IUs installed will be features and that the user
* always wants the latest version.
*
* In the m2e use case the user may need a specific version of the IU which need not be a feature.
*/
@SuppressWarnings("restriction")
public class M2EConnectorDiscoveryExtensionReader extends ConnectorDiscoveryExtensionReader {
private Map<String, Tag> tagById = new HashMap<String, Tag>();
public Set<Tag> getTags() {
return new HashSet<Tag>(tagById.values());
}
private Tag getTag(String id) {
if(id == null) {
return null;
}
// first, look for known tag
Tag result = tagById.get(id);
if(result != null) {
return result;
}
// second, search default tags
for(Tag tag : DEFAULT_TAGS) {
if(tag.getValue().equals(id)) {
tagById.put(id, tag);
return tag;
}
}
// third, create new tag
result = new Tag(id, id);
tagById.put(id, result);
return result;
}
public <T extends CatalogItem> T readConnectorDescriptor(IConfigurationElement element, Class<T> clazz)
throws ValidationException {
T connectorDescriptor;
try {
connectorDescriptor = clazz.getDeclaredConstructor().newInstance();
} catch(Exception e) {
throw new IllegalStateException(e);
}
try {
String kinds = element.getAttribute("kind"); //$NON-NLS-1$
if(kinds != null) {
String[] akinds = kinds.split("\\s*,\\s*"); //$NON-NLS-1$
for(String kind : akinds) {
Tag tag = getTag(kind);
if(tag != null) {
connectorDescriptor.addTag(tag);
}
}
}
} catch(IllegalArgumentException e) {
throw new ValidationException(Messages.ConnectorDiscoveryExtensionReader_unexpected_value_kind);
}
connectorDescriptor.setName(element.getAttribute("name")); //$NON-NLS-1$
connectorDescriptor.setProvider(element.getAttribute("provider")); //$NON-NLS-1$
connectorDescriptor.setLicense(element.getAttribute("license")); //$NON-NLS-1$
connectorDescriptor.setDescription(element.getAttribute("description")); //$NON-NLS-1$
connectorDescriptor.setSiteUrl(element.getAttribute("siteUrl")); //$NON-NLS-1$
connectorDescriptor.setId(element.getAttribute("id")); //$NON-NLS-1$
connectorDescriptor.setCategoryId(element.getAttribute("categoryId")); //$NON-NLS-1$
connectorDescriptor.setCertificationId(element.getAttribute("certificationId")); //$NON-NLS-1$
connectorDescriptor.setPlatformFilter(element.getAttribute("platformFilter")); //$NON-NLS-1$
connectorDescriptor.setGroupId(element.getAttribute("groupId")); //$NON-NLS-1$
IConfigurationElement[] children = element.getChildren("iu"); //$NON-NLS-1$
if(children.length > 0) {
for(IConfigurationElement child : children) {
connectorDescriptor.getInstallableUnits().add(child.getAttribute("id")); //$NON-NLS-1$
}
} else {
// TODO Should an exception be thrown here?
// no particular iu specified, use connector id
connectorDescriptor.getInstallableUnits().add(connectorDescriptor.getId());
}
for(IConfigurationElement child : element.getChildren("featureFilter")) { //$NON-NLS-1$
FeatureFilter featureFilterItem = readFeatureFilter(child);
featureFilterItem.setItem(connectorDescriptor);
connectorDescriptor.getFeatureFilter().add(featureFilterItem);
}
for(IConfigurationElement child : element.getChildren("icon")) { //$NON-NLS-1$
Icon iconItem = readIcon(child);
if(connectorDescriptor.getIcon() != null) {
throw new ValidationException(Messages.ConnectorDiscoveryExtensionReader_unexpected_element_icon);
}
connectorDescriptor.setIcon(iconItem);
}
for(IConfigurationElement child : element.getChildren("overview")) { //$NON-NLS-1$
Overview overviewItem = readOverview(child);
overviewItem.setItem(connectorDescriptor);
if(connectorDescriptor.getOverview() != null) {
throw new ValidationException(Messages.ConnectorDiscoveryExtensionReader_unexpected_element_overview);
}
connectorDescriptor.setOverview(overviewItem);
}
connectorDescriptor.validate();
return connectorDescriptor;
}
}
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