org.eclipse.emfforms.internal.spreadsheet.stream.EMFFormsSpreadsheetStreamExporterImpl.java Source code

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Here is the source code for org.eclipse.emfforms.internal.spreadsheet.stream.EMFFormsSpreadsheetStreamExporterImpl.java

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/*******************************************************************************
 * Copyright (c) 2011-2015 EclipseSource Muenchen GmbH and others.
 *
 * 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:
 * Eugen - initial API and implementation
 ******************************************************************************/
package org.eclipse.emfforms.internal.spreadsheet.stream;

import java.io.IOException;
import java.io.OutputStream;
import java.util.Collection;

import org.apache.poi.ss.usermodel.Workbook;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecp.view.spi.model.VViewModelProperties;
import org.eclipse.emfforms.spi.common.report.ReportService;
import org.eclipse.emfforms.spi.spreadsheet.core.EMFFormsSpreadsheetReport;
import org.eclipse.emfforms.spi.spreadsheet.core.transfer.EMFFormsSpreadsheetExporter;
import org.eclipse.emfforms.spi.spreadsheet.stream.EMFFormsSpreadsheetStreamExporter;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;

/**
 * Class for exporting data to a workbook based on the provided OutputStream.
 *
 * @author Eugen Neufeld
 *
 */
public class EMFFormsSpreadsheetStreamExporterImpl implements EMFFormsSpreadsheetStreamExporter {

    @Override
    public void render(OutputStream outputStream, Collection<EObject> domainObjects, EObject viewEobject,
            VViewModelProperties properties) {
        final Workbook workbook = EMFFormsSpreadsheetExporter.INSTANCE.render(domainObjects, viewEobject,
                properties);

        final BundleContext bundleContext = FrameworkUtil.getBundle(getClass()).getBundleContext();
        final ServiceReference<ReportService> serviceReference = bundleContext
                .getServiceReference(ReportService.class);
        final ReportService reportService = bundleContext.getService(serviceReference);

        try {
            workbook.write(outputStream);
        } catch (final IOException ex) {
            reportService.report(new EMFFormsSpreadsheetReport(ex, 4));
        } finally {
            try {
                outputStream.close();
            } catch (final IOException ex) {
                reportService.report(new EMFFormsSpreadsheetReport(ex, 4));
            }
        }
        bundleContext.ungetService(serviceReference);
    }

}