+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management
- * in Industry THTH ry.
- * 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:
- * VTT Technical Research Centre of Finland - initial API and implementation
- *******************************************************************************/
-package org.simantics.db.layer0.service.impl;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.URL;
-import java.util.Enumeration;
-import java.util.UUID;
-
-import org.eclipse.core.runtime.IStatus;
-import org.eclipse.core.runtime.MultiStatus;
-import org.eclipse.core.runtime.Status;
-import org.osgi.framework.Bundle;
-import org.osgi.framework.BundleContext;
-import org.simantics.databoard.Bindings;
-import org.simantics.databoard.Datatypes;
-import org.simantics.databoard.serialization.Serializer;
-import org.simantics.databoard.type.Datatype;
-import org.simantics.db.Session;
-import org.simantics.db.VirtualGraph;
-import org.simantics.db.exception.DatabaseException;
-import org.simantics.db.layer0.internal.Activator;
-import org.simantics.db.service.VirtualGraphSupport;
-import org.simantics.db.services.ServiceInitializer;
-import org.simantics.graph.db.ImportAdvisor;
-import org.simantics.graph.db.TransferableGraphs;
-import org.simantics.graph.representation.TransferableGraph1;
-
-/**
- * A database client service initializer which ensures that any <code>.tg</code>
- * files defined in a bundle folder <code>virtualgraphs</code> are imported into
- * randomly named in-memory virtualgraphs for the initialized session.
- *
- * @author Antti Villberg
- */
-public class VirtualGraphInitializer implements ServiceInitializer {
-
- @Override
- public IStatus initialize(Session s) {
- MultiStatus result = new MultiStatus(Activator.PLUGIN_ID, 0, "VirtualGraphInitialize errors:", null);
- BundleContext context = Activator.getInstance().getContext();
- Serializer datatypeSerializer = Bindings.getSerializerUnchecked( Datatype.class );
- Datatype tgType = Datatypes.getDatatypeUnchecked(TransferableGraph1.class);
- Serializer tgSerializer = Bindings.getSerializerUnchecked( TransferableGraph1.class );
- for (final Bundle b : context.getBundles()) {
- Enumeration<?> graphs = b.getEntryPaths("virtualgraphs");
- while(graphs != null && graphs.hasMoreElements()) {
- String element = (String)graphs.nextElement();
- if(!element.endsWith(".tg"))
- continue;
- URL url = b.getEntry(element);
- try {
- InputStream stream = url.openStream();
- Datatype dt = (Datatype) datatypeSerializer.deserialize( stream );
- if(dt.equals(tgType)) {
- VirtualGraphSupport support = s.getService(VirtualGraphSupport.class);
- VirtualGraph vg = support.getMemoryPersistent(UUID.randomUUID().toString());
- TransferableGraph1 tg = (TransferableGraph1) tgSerializer.deserialize(stream);
- TransferableGraphs.importVirtualGraph(s, vg, tg,
- new ImportAdvisor());
- }
- stream.close();
- } catch (IOException e) {
- IStatus status = new Status(IStatus.ERROR, context.getBundle().getSymbolicName(), "VirtualGraphInitializer transferable graph initialization failed for '" + url.toString() + "', see exception for details.", e);
- result.add(status);
- } catch (DatabaseException e) {
- IStatus status = new Status(IStatus.ERROR, context.getBundle().getSymbolicName(), "VirtualGraphInitializer transferable graph initialization failed for '" + url.toString() + "', see exception for details.", e);
- result.add(status);
- }
- }
- }
- if (!result.isOK()) return result;
- return Status.OK_STATUS;
- }
-
-}