com.astra.ses.spell.dev.database.jobs.DatabaseLoadJob.java Source code

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///////////////////////////////////////////////////////////////////////////////
//
// PACKAGE   : com.astra.ses.spell.dev.database.jobs
// 
// FILE      : DatabaseLoadJob.java
//
// DATE      : 2009-09-14
//
// Copyright (C) 2008, 2011 SES ENGINEERING, Luxembourg S.A.R.L.
//
// By using this software in any way, you are agreeing to be bound by
// the terms of this license.
//
// 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
//
// NO WARRANTY
// EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED
// ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER
// EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR
// CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
// PARTICULAR PURPOSE. Each Recipient is solely responsible for determining
// the appropriateness of using and distributing the Program and assumes all
// risks associated with its exercise of rights under this Agreement ,
// including but not limited to the risks and costs of program errors,
// compliance with applicable laws, damage to or loss of data, programs or
// equipment, and unavailability or interruption of operations.
//
// DISCLAIMER OF LIABILITY
// EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY
// CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION
// LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE
// EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGES.
//
// Contributors:
//    SES ENGINEERING - initial API and implementation and/or initial documentation
//
// PROJECT   : SPELL
//
// SUBPROJECT: SPELL Development Environment
//
///////////////////////////////////////////////////////////////////////////////
package com.astra.ses.spell.dev.database.jobs;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.widgets.Display;

import com.astra.ses.spell.dev.database.Activator;
import com.astra.ses.spell.dev.database.DatabaseDriverManager;
import com.astra.ses.spell.dev.database.DatabaseManager;
import com.astra.ses.spell.dev.database.exception.DatabaseLoadException;
import com.astra.ses.spell.dev.database.interfaces.ISpellDatabase;
import com.astra.ses.spell.dev.database.interfaces.ISpellDatabaseDriver;

/**************************************************************************
 * DatabaseLoadJob class will try to retrieve a ISpellDatabase in a 
 * different thread
 *************************************************************************/
public class DatabaseLoadJob implements IRunnableWithProgress {
    /** Current project */
    private IProject m_project;
    /** Driver Name */
    private String m_driverName;
    /** DB path */
    private String m_path;
    /** Job result */
    public IStatus result;

    /**********************************************************************
     * Constructor
     * @param driver
     * @param path
     *********************************************************************/
    public DatabaseLoadJob(IProject project, String driver, String path) {
        m_project = project;
        m_driverName = driver;
        m_path = path;
    }

    @Override
    public void run(IProgressMonitor monitor) {
        monitor.setTaskName("Loading TM/TC database");
        result = Status.OK_STATUS;
        monitor.subTask("Loading database for project " + m_project.getName());
        try {
            ISpellDatabaseDriver driver = DatabaseDriverManager.getInstance().getDriver(m_driverName);
            if ((driver == null) || (monitor.isCanceled())) {
                result = Status.CANCEL_STATUS;
                return;
            }
            boolean correctDb = driver.checkDatabase(m_path);
            if (!correctDb) {
                String errMessage = "Database for project " + m_project.getName() + " is not accessible";
                result = new Status(IStatus.ERROR, Activator.PLUGIN_ID, errMessage,
                        new DatabaseLoadException(errMessage));
            } else {
                try {
                    final ISpellDatabase loadedDatabase = driver.loadDatabase(m_path, monitor);
                    if (Display.getDefault() != null) {
                        Display.getDefault().asyncExec(new Runnable() {
                            public void run() {
                                DatabaseManager.getInstance().setDB(m_project, loadedDatabase);
                            }
                        });
                    } else {
                        DatabaseManager.getInstance().setDB(m_project, loadedDatabase);
                    }
                } catch (DatabaseLoadException e) {
                    String errMessage = "Error loading database for project " + m_project.getName();
                    result = new Status(IStatus.ERROR, Activator.PLUGIN_ID, errMessage,
                            new DatabaseLoadException(errMessage));
                }
            }
        } finally {
            monitor.done();
        }
        if (monitor.isCanceled()) {
            result = Status.CANCEL_STATUS;
        }
    }
}