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/*******************************************************************************
* Copyright (c) 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.ui.internal.util;
import java.util.LinkedList;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.project.MavenProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.m2e.core.MavenPlugin;
import org.eclipse.m2e.core.embedder.IMaven;
import org.eclipse.m2e.core.project.IMavenProjectFacade;
import org.eclipse.m2e.core.project.IMavenProjectRegistry;
/**
* Helper class to get the parent chain given a pom
*/
public class ParentGatherer {
private MavenProject mavenProject;
private IMavenProjectFacade projectFacade;
public ParentGatherer(MavenProject leafProject, IMavenProjectFacade facade) {
this.mavenProject = leafProject;
this.projectFacade = facade;
}
/**
* Return the list of parents for a give pom
* @param monitor
* @return list of {@link MavenProject} from the given project to its ultimate parent.
* The first entry is the given pom, the last one the ultimate parent.
* @throws CoreException
*/
public LinkedList<MavenProject> getParentHierarchy(IProgressMonitor monitor) throws CoreException {
LinkedList<MavenProject> hierarchy = new LinkedList<MavenProject>();
IMaven maven = MavenPlugin.getMaven();
IMavenProjectRegistry projectManager = MavenPlugin.getMavenProjectRegistry();
maven.detachFromSession(mavenProject);
hierarchy.add(mavenProject);
MavenProject project = mavenProject;
while(project.getModel().getParent() != null) {
if(monitor.isCanceled()) {
return null;
}
MavenExecutionRequest request = projectManager.createExecutionRequest(projectFacade, monitor);
project = maven.resolveParentProject(request, project, monitor);
hierarchy.add(project);
}
return hierarchy;
}
}
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