import org.eclipse.core.resources.IFile;

import org.eclipse.jdt.core.IType;

import org.eclipse.jpt.common.core.internal.utility.JDTTools;

import org.eclipse.jpt.common.core.internal.utility.PlatformTools;

import org.eclipse.jpt.jpa.core.context.PersistentType;

import org.eclipse.jpt.jpa.core.context.orm.OrmPersistentType;

import org.eclipse.jpt.jpa.ui.internal.plugin.JptJpaUiPlugin;

import org.eclipse.jpt.jpa.ui.selection.JpaSelectionManager;

import org.eclipse.ui.IWorkbenchPage;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.PlatformUI;

import org.eclipse.ui.ide.IDE;

	/*

	 * Duplicate persistent type case is not handled so the opened mapping file could be 

	 * any one of the existent mapping files that has the persistent type.

	 * User needs to solve the duplicate problem to open the mapping file he wants to open.

	 */

	protected void hyperLinkSelected() {

		String className = this.getFullyQualifiedClassName();

		if (className != null) {

			PersistentType pType = this.getSubject().getPersistenceUnit().getPersistentType(className);

			if (pType instanceof OrmPersistentType) {

					IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();

					IFile file = ((OrmPersistentType)pType).getParent().getParent().getXmlResource().getFile();

					openInEditor(page, file);

					setSelectionInEditor(page, pType);

			} else {

				IType type = JDTTools.findType(this.getJavaProject(), className);

				if (type != null) {

					openInEditor(type);

				}	else {

					createType();

				}

			}

		}

	}

	/**

	 * Open the file in an editor of the active workbench page

	 * @param page

	 * @param file

	 */

	private void openInEditor(IWorkbenchPage page, IFile file) {

		try {

			IDE.openEditor(page, file);

		} catch (PartInitException ex) {

			JptJpaUiPlugin.instance().logError(ex);

		}

	}

	/**

	 * Set the selection to the persistent type in the editor

	 * @param page

	 * @param persistentType

	 */

	private void setSelectionInEditor(IWorkbenchPage page, PersistentType persistentType) {

		JpaSelectionManager selectionManager = PlatformTools.getAdapter(page, JpaSelectionManager.class);

		selectionManager.setSelection(persistentType);

	}