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/*******************************************************************************
* Copyright (c) 2008-2010 Sonatype, Inc.
* 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:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.m2e.core.internal.project.registry;
import java.io.Serializable;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.m2e.core.MavenPlugin;
import org.eclipse.m2e.core.embedder.ArtifactKey;
import org.eclipse.m2e.core.internal.MavenPluginActivator;
/**
* Registry of all workspace projects and their dependencies.
*
* @author igor
*/
abstract class BasicProjectRegistry implements Serializable {
private static final long serialVersionUID = 5542512601401896748L;
private final String m2e_version = MavenPluginActivator.getQualifiedVersion();
/**
* Map<ArtifactKey, IPath> Maps ArtifactKey to full workspace IPath of the POM file that defines this artifact.
*/
protected final Map<ArtifactKey, IFile> workspaceArtifacts = new HashMap<ArtifactKey, IFile>();
/**
* Maps full pom IPath to MavenProjectFacade
*/
protected final Map<IFile, MavenProjectFacade> workspacePoms = new HashMap<IFile, MavenProjectFacade>();
/**
* Maps required capabilities to projects that require them.
*/
protected final Map<VersionlessKey, Map<RequiredCapability, Set<IFile>>> requiredCapabilities = new HashMap<VersionlessKey, Map<RequiredCapability, Set<IFile>>>();
/**
* Maps project pom.xml file to the capabilities provided by the project
*/
protected final Map<IFile, Set<Capability>> projectCapabilities = new HashMap<IFile, Set<Capability>>();
/**
* Maps project pom.xml file to the capabilities required by the project
*/
protected final Map<IFile, Set<RequiredCapability>> projectRequirements = new HashMap<IFile, Set<RequiredCapability>>();
protected BasicProjectRegistry() {
}
protected BasicProjectRegistry(BasicProjectRegistry other) {
replaceWith(other);
}
protected final void replaceWith(BasicProjectRegistry other) {
clear();
copy(other.workspaceArtifacts, workspaceArtifacts);
copy(other.workspacePoms, workspacePoms);
copy(other.projectCapabilities, projectCapabilities);
copy(other.projectRequirements, projectRequirements);
copy(other.requiredCapabilities, requiredCapabilities);
}
/**
* THIS IS NOT A GENERIC DEEP COPY IMPLEMENTATION!
*/
@SuppressWarnings({"unchecked", "rawtypes"})
private static void copy(Map from, Map to) {
for(Map.Entry entry : (Set<Map.Entry>) from.entrySet()) {
Object value = entry.getValue();
if(value instanceof Map) {
Map map = new HashMap();
copy((Map) value, map);
value = map;
} else if(value instanceof Set) {
Set set = new HashSet((Set) value);
value = set;
}
to.put(entry.getKey(), value);
}
}
public MavenProjectFacade getProjectFacade(IFile pom) {
return workspacePoms.get(pom);
}
public MavenProjectFacade getProjectFacade(String groupId, String artifactId, String version) {
IFile path = workspaceArtifacts.get(new ArtifactKey(groupId, artifactId, version, null));
if(path == null) {
return null;
}
return workspacePoms.get(path);
}
/**
* @TODO return a List
*/
public MavenProjectFacade[] getProjects() {
return workspacePoms.values().toArray(new MavenProjectFacade[workspacePoms.size()]);
}
public IFile getWorkspaceArtifact(ArtifactKey key) {
return workspaceArtifacts.get(key);
}
protected void clear() {
workspaceArtifacts.clear();
workspacePoms.clear();
requiredCapabilities.clear();
projectCapabilities.clear();
projectRequirements.clear();
}
public boolean isValid() {
return MavenPluginActivator.getQualifiedVersion().equals(m2e_version) //
&& workspaceArtifacts != null //
&& workspacePoms != null //
&& requiredCapabilities != null //
&& projectCapabilities != null //
&& projectRequirements != null //
&& areFacadesValid();
}
private boolean areFacadesValid() {
for(MavenProjectFacade facade : workspacePoms.values()) {
if(facade == null || facade.getPom() == null || facade.getPom().getLocation() == null) {
return false;
}
}
return true;
}
protected Set<RequiredCapability> getProjectRequirements(IFile pom) {
return projectRequirements.get(pom);
}
}
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