Java tutorial
/*---------------- FILE HEADER KALYPSO ------------------------------------------ * * This file is part of kalypso. * Copyright (C) 2004 by: * * Technical University Hamburg-Harburg (TUHH) * Institute of River and coastal engineering * Denickestrae 22 * 21073 Hamburg, Germany * http://www.tuhh.de/wb * * and * * Bjoernsen Consulting Engineers (BCE) * Maria Trost 3 * 56070 Koblenz, Germany * http://www.bjoernsen.de * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Contact: * * E-Mail: * belger@bjoernsen.de * schlienger@bjoernsen.de * v.doemming@tuhh.de * * ---------------------------------------------------------------------------*/ package org.kalypso.gml.ui.internal.coverage.imports; import java.io.File; import java.net.MalformedURLException; import java.net.URL; import org.apache.commons.httpclient.URIException; import org.apache.commons.io.FileUtils; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.SubProgressMonitor; import org.kalypso.commons.java.io.FileUtilities; import org.kalypso.contribs.java.io.FilePattern; import org.kalypso.gml.processes.tin.MultiSurfaceCoverage; import org.kalypso.gml.processes.tin.TriangulatedSurfaceFeature; import org.kalypso.gml.ui.KalypsoGmlUIPlugin; import org.kalypso.gml.ui.coverage.imports.AbstractGridCoverageImporter; import org.kalypso.gml.ui.coverage.imports.ICoverageImporter; import org.kalypso.gml.ui.i18n.Messages; import org.kalypso.ogc.gml.serialize.GmlSerializer; import org.kalypso.transformation.transformer.GeoTransformerFactory; import org.kalypso.transformation.transformer.IGeoTransformer; import org.kalypsodeegree.KalypsoDeegreePlugin; import org.kalypsodeegree.model.coverage.RangeSetFile; import org.kalypsodeegree.model.feature.Feature; import org.kalypsodeegree.model.feature.GMLWorkspace; import org.kalypsodeegree.model.feature.IFeatureBindingCollection; import org.kalypsodeegree.model.feature.event.FeatureStructureChangeModellEvent; import org.kalypsodeegree.model.geometry.GM_Envelope; import org.kalypsodeegree.model.geometry.GM_Object; import org.kalypsodeegree.model.geometry.GM_TriangulatedSurface; import org.kalypsodeegree_impl.gml.binding.commons.ICoverage; import org.kalypsodeegree_impl.gml.binding.commons.ICoverageCollection; import org.kalypsodeegree_impl.model.feature.FeatureFactory; /** * @author Holger Albert */ public abstract class AbstractTriangulatedSurfaceCoverageImporter implements ICoverageImporter { @Override public abstract FilePattern getFilePattern(); /** * Default implementation that returns the source file itself. Most import only import exactly one file. */ @Override public File[] getSourceFiles(final File sourceFile) { return new File[] { sourceFile }; } @Override public ICoverage importCoverage(final ICoverageCollection coverageContainer, final File dataFile, final String crs, final IContainer dataContainer, IProgressMonitor monitor) throws CoreException { /* Monitor. */ if (monitor == null) monitor = new NullProgressMonitor(); /* Get a temporary file. */ final File tempFile = FileUtilities.getNewTempFile("hmoConverter", "gmlz");//$NON-NLS-1$ //$NON-NLS-2$ try { /* Monitor. */ monitor.beginTask(Messages.getString("AbstractTriangulatedSurfaceCoverageImporter_0"), 300); //$NON-NLS-1$ monitor.subTask(Messages.getString("AbstractTriangulatedSurfaceCoverageImporter_1")); //$NON-NLS-1$ /* Read the input data. */ final GM_TriangulatedSurface gmSurface = readInputData(dataFile, crs, new SubProgressMonitor(monitor, 100)); /* Monitor. */ monitor.subTask(Messages.getString("AbstractTriangulatedSurfaceCoverageImporter_2")); //$NON-NLS-1$ /* Transform into the Kalypso coordinate system. */ final IGeoTransformer geoTransformer = GeoTransformerFactory .getGeoTransformer(KalypsoDeegreePlugin.getDefault().getCoordinateSystem()); final GM_Object transformedSurface = geoTransformer.transform(gmSurface); /* Create the workspace. */ final GMLWorkspace tmpWorkspace = FeatureFactory .createGMLWorkspace(TriangulatedSurfaceFeature.FEATURE_TRIANGULATED_SURFACE, null, null); final TriangulatedSurfaceFeature rootFeature = (TriangulatedSurfaceFeature) tmpWorkspace .getRootFeature(); rootFeature.setTriangulatedSurface((GM_TriangulatedSurface) transformedSurface); /* Save the workspace. */ GmlSerializer.serializeWorkspace(tempFile, tmpWorkspace, "UTF-8"); //$NON-NLS-1$ /* Monitor. */ monitor.worked(100); monitor.subTask(Messages.getString("AbstractTriangulatedSurfaceCoverageImporter_4")); //$NON-NLS-1$ /* Get the target file. */ final File targetDir = dataContainer.getLocation().toFile(); final File targetFile = AbstractGridCoverageImporter.createTargetFile(dataFile, targetDir, "gmlz"); //$NON-NLS-1$ /* Add as MultiSurface-Coverage. */ final IFeatureBindingCollection<ICoverage> coverages = coverageContainer.getCoverages(); final ICoverage newCoverage = coverages.addNew(MultiSurfaceCoverage.FEATURE_MULTI_SURFACE_COVERAGE); newCoverage.setName(dataFile.getName()); /* Update the bounded by property. */ final GM_Envelope boundedBy = gmSurface.getEnvelope(); final GM_Envelope boundedByTransformed = geoTransformer.transform(boundedBy); newCoverage.setProperty(Feature.QN_BOUNDED_BY, boundedByTransformed); /* Update the range set property. */ final String externalResource = buildRelativePath(dataContainer, coverageContainer.getWorkspace().getContext(), targetFile); final RangeSetFile rangeSetFile = new RangeSetFile(externalResource); rangeSetFile.setMimeType("application/gml+xml"); //$NON-NLS-1$ newCoverage.setRangeSet(rangeSetFile); /* Update the envelopes. */ newCoverage.setEnvelopesUpdated(); /* Move the file. */ FileUtils.moveFile(tempFile, targetFile); /* Fire model event. */ final GMLWorkspace workspace = coverageContainer.getWorkspace(); workspace.fireModellEvent(new FeatureStructureChangeModellEvent(workspace, coverageContainer, newCoverage, FeatureStructureChangeModellEvent.STRUCTURE_CHANGE_ADD)); /* Monitor. */ monitor.worked(100); return newCoverage; } catch (final Exception e) { final IStatus status = new Status(IStatus.ERROR, KalypsoGmlUIPlugin.id(), Messages.getString("AbstractTriangulatedSurfaceCoverageImporter_6"), e); //$NON-NLS-1$ throw new CoreException(status); } finally { FileUtils.deleteQuietly(tempFile); dataContainer.refreshLocal(IResource.DEPTH_INFINITE, new NullProgressMonitor()); monitor.done(); } } @Override public String getTargetExtension() { return "gmlz"; //$NON-NLS-1$ } private String buildRelativePath(final IContainer dataContainer, final URL context, final File targetFile) throws URIException, MalformedURLException { final IFile file = dataContainer.getFile(Path.fromPortableString(targetFile.getName())); return AbstractGridCoverageImporter.createRelativeGridPath(context, file); } protected abstract GM_TriangulatedSurface readInputData(final File dataFile, final String crs, final IProgressMonitor monitor) throws CoreException, MalformedURLException; }