package org.andromda.maven.plugin.andromdapp.utils;
import java.io.File;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.profiles.DefaultProfileManager;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.MavenProjectBuilder;
import org.apache.maven.project.ProjectBuildingException;
/**
* Contains ulitities for dealing with Maven projects.
*
* @author Chad Brandon
*/
public class ProjectUtils
{
/**
* Stores previously discovered projects.
*/
private static final Map projectCache = new HashMap();
/**
* Gets a project for the given <code>pom</code>.
*
* @param pom the pom from which to build the project.
* @return the built project.
* @throws ProjectBuildingException
*/
public static synchronized MavenProject getProject(
final MavenProjectBuilder projectBuilder,
final MavenSession session,
final File pom,
final Log logger)
throws ProjectBuildingException
{
// - first attempt to get a project from the cache
MavenProject project = (MavenProject)projectCache.get(pom);
if (project == null)
{
// - next attempt to get the existing project from the session
project = getProjectFromSession(
session,
pom);
if (project == null)
{
// - if we didn't find it in the session, create it
try
{
project =
projectBuilder.build(
pom,
session.getLocalRepository(),
new DefaultProfileManager(session.getContainer()));
projectCache.put(
pom,
project);
}
catch (Exception ex)
{
if (logger.isDebugEnabled())
{
logger.debug("Failed to build project from pom: " + pom, ex);
}
}
}
}
return project;
}
/**
* The POM file name.
*/
private static final String POM_FILE = "pom.xml";
/**
* Attempts to retrieve the Maven project for the given <code>pom</code>.
*
* @param pom the POM to find.
* @return the maven project with the matching POM.
*/
private static MavenProject getProjectFromSession(
final MavenSession session,
final File pom)
{
MavenProject foundProject = null;
for (final Iterator projectIterator = session.getSortedProjects().iterator(); projectIterator.hasNext();)
{
final MavenProject project = (MavenProject)projectIterator.next();
final File projectPom = new File(
project.getBasedir(),
POM_FILE);
if (projectPom.equals(pom))
{
foundProject = project;
}
}
return foundProject;
}
}