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.simulation.core.ant; import java.io.IOException; import java.io.OutputStreamWriter; import java.lang.reflect.InvocationTargetException; import java.net.URL; import java.util.logging.Level; import org.apache.commons.io.IOUtils; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.OperationCanceledException; import org.eclipse.core.runtime.SubProgressMonitor; import org.kalypso.contribs.eclipse.core.runtime.IStatusCollector; import org.kalypso.contribs.eclipse.core.runtime.StatusCollector; import org.kalypso.contribs.eclipse.core.runtime.StatusUtilities; import org.kalypso.contribs.eclipse.jface.operation.ICoreRunnableWithProgress; import org.kalypso.contribs.java.net.UrlResolverSingleton; import org.kalypso.contribs.java.util.logging.ILogger; import org.kalypso.ogc.gml.serialize.GmlSerializeException; import org.kalypso.ogc.gml.serialize.GmlSerializer; import org.kalypso.simulation.core.KalypsoSimulationCorePlugin; import org.kalypsodeegree.model.feature.FeatureVisitor; import org.kalypsodeegree.model.feature.GMLWorkspace; import org.kalypsodeegree_impl.model.feature.visitors.CountFeatureVisitor; import org.kalypsodeegree_impl.model.feature.visitors.MonitorFeatureVisitor; /** * @author belger */ public class FeatureVisitorOperation implements ICoreRunnableWithProgress { private final IFeatureVisitorTask m_visitorTask; public FeatureVisitorOperation(final IFeatureVisitorTask visitorTask) { m_visitorTask = visitorTask; } /** * @see org.kalypso.contribs.eclipse.jface.operation.ICoreRunnableWithProgress#execute(org.eclipse.core.runtime.IProgressMonitor) */ @Override public final IStatus execute(final IProgressMonitor monitor) throws InterruptedException { try { final String description = m_visitorTask.getVisitorTaskDescription(); final URL gmlLocation = m_visitorTask.getGmlLocation(); final IProgressMonitor niceMonitor = new AntProgressMonitor(monitor, description); niceMonitor.beginTask(description, 100); niceMonitor.subTask("Parameter werden validiert"); m_visitorTask.validateInput(); niceMonitor.worked(10); niceMonitor.subTask("Lese Konfiguration"); final GMLWorkspace workspace = GmlSerializer.createGMLWorkspace(gmlLocation, null); niceMonitor.worked(10); final IStatus resultStatus = executeFeaturePathes(new SubProgressMonitor(niceMonitor, 70), workspace); if (m_visitorTask.doSaveGml()) { niceMonitor.subTask("Schreibe Ergebnis"); saveGML(gmlLocation, workspace); niceMonitor.worked(10); } return resultStatus; } catch (final Exception e) { if (e instanceof InterruptedException) throw (InterruptedException) e; return StatusUtilities.statusFromThrowable(e); } finally { monitor.done(); } } private IStatus executeFeaturePathes(final IProgressMonitor monitor, final GMLWorkspace workspace) throws InterruptedException { final String[] featurePathes = m_visitorTask.getFeaturePathes(); monitor.beginTask(m_visitorTask.getVisitorTaskDescription(), featurePathes.length); monitor.subTask("wird bearbeitet..."); final IStatusCollector stati = new StatusCollector(KalypsoSimulationCorePlugin.getID()); // FIXME: ERRROR-HANDLING: handling: always add OK-stati (but with good messages...) // FIXME: ERRROR-HANDLING: one status per- feature path (but remove this level if we have only one path) for (final String featurePath : featurePathes) { if (monitor.isCanceled()) throw new InterruptedException(); try { if (featurePathes.length > 1) monitor.subTask(String.format("Bearbeite %s", featurePath)); final IStatus result = visitPath(workspace, featurePath, new SubProgressMonitor(monitor, 1, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK)); if (!result.isOK()) stati.add(result); } catch (final IllegalArgumentException e) { final IStatus status = StatusUtilities.statusFromThrowable(e); if (m_visitorTask.doIgnoreIllegalFeaturePath()) { getLogger().log(Level.WARNING, -1, "Feature wird ignoriert (" + status.getMessage() + ")"); } else { getLogger().log(Level.WARNING, -1, status.getMessage()); stati.add(status); } } catch (final Throwable t) { final IStatus status = StatusUtilities.statusFromThrowable(t); getLogger().log(Level.SEVERE, -1, status.getMessage()); stati.add(status); } } // TODO: where to get the message from? // TODO: get message from the visitor-task return stati.asMultiStatusOrOK(""); //$NON-NLS-1$ } private ILogger getLogger() { return m_visitorTask.getLogger(); } private IStatus visitPath(final GMLWorkspace workspace, final String featurePath, final IProgressMonitor monitor) throws CoreException, InvocationTargetException, InterruptedException { FeatureVisitor visitor; try { final ILogger logger = getLogger(); final URL context = m_visitorTask.getContext(); visitor = m_visitorTask.createVisitor(context, logger); // count features final int depth = m_visitorTask.getDepth(); final int count = countFeatures(workspace, featurePath, depth); final MonitorFeatureVisitor wrappedVisitor = new MonitorFeatureVisitor(monitor, count, visitor); workspace.accept(wrappedVisitor, featurePath, depth); } catch (final OperationCanceledException e) { throw new InterruptedException(); } finally { monitor.done(); } return m_visitorTask.statusFromVisitor(visitor); } private int countFeatures(final GMLWorkspace workspace, final String featurePath, final int depth) { final CountFeatureVisitor countFeatureVisitor = new CountFeatureVisitor(); workspace.accept(countFeatureVisitor, featurePath, depth); return countFeatureVisitor.getCount(); } private void saveGML(final URL gmlURL, final GMLWorkspace workspace) throws IOException, GmlSerializeException { OutputStreamWriter writer = null; try { writer = UrlResolverSingleton.getDefault().createWriter(gmlURL); GmlSerializer.serializeWorkspace(writer, workspace); writer.close(); } finally { IOUtils.closeQuietly(writer); } } }