1 files changed, 45 insertions, 0 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/facet/RuntimeChangedListener.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/facet/RuntimeChangedListener.java
new file mode 100644
index 0000000000..4aed10fdeb
--- /dev/null
+++ b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/facet/RuntimeChangedListener.java
@@ -0,0 +1,45 @@
+package org.eclipse.jpt.core.internal.facet;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.NullProgressMonitor;
+import org.eclipse.jpt.core.JpaProject;
+import org.eclipse.jpt.core.JptCorePlugin;
+import org.eclipse.jst.common.project.facet.core.libprov.LibraryInstallDelegate;
+import org.eclipse.wst.common.project.facet.core.IFacetedProjectBase;
+import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion;
+import org.eclipse.wst.common.project.facet.core.ProjectFacetsManager;
+import org.eclipse.wst.common.project.facet.core.events.IFacetedProjectEvent;
+import org.eclipse.wst.common.project.facet.core.events.IFacetedProjectListener;
+
+public class RuntimeChangedListener
+		implements IFacetedProjectListener {
+	
+	public void handleEvent(IFacetedProjectEvent facetedProjectEvent) {
+		
+		IFacetedProjectBase fpb = facetedProjectEvent.getWorkingCopy();
+		if (fpb == null) {
+			fpb = facetedProjectEvent.getProject();
+		}
+		IProjectFacetVersion pfv = 
+			fpb.getProjectFacetVersion(ProjectFacetsManager.getProjectFacet(JptCorePlugin.FACET_ID));
+		if (pfv != null) {
+			Map<String, Object> enablementVariables = new HashMap<String, Object>();
+			enablementVariables.put(JpaLibraryProviderConstants.EXPR_VAR_JPA_PLATFORM, getJpaPlatformId(fpb.getProject()));
+			LibraryInstallDelegate lp = new LibraryInstallDelegate(fpb, pfv, enablementVariables);
+			try {
+				lp.execute(new NullProgressMonitor());
+			}
+			catch (CoreException ce) {
+				JptCorePlugin.log(ce);
+			}
+		}
+	}
+	
+	protected String getJpaPlatformId(IProject project) {
+		JpaProject jpaProject = JptCorePlugin.getJpaProject(project);
+		return (jpaProject == null) ? null : jpaProject.getJpaPlatform().getId();
+	}
+}