bundles/org.simantics.db.services/src/org/simantics/db/services/GlobalServiceInitializer.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.db.services;\r
  13 \r
  14 import org.eclipse.core.runtime.CoreException;\r
  15 import org.eclipse.core.runtime.IConfigurationElement;\r
  16 import org.eclipse.core.runtime.IExtensionPoint;\r
  17 import org.eclipse.core.runtime.IExtensionRegistry;\r
  18 import org.eclipse.core.runtime.IStatus;\r
  19 import org.eclipse.core.runtime.MultiStatus;\r
  20 import org.eclipse.core.runtime.Platform;\r
  21 import org.eclipse.core.runtime.Status;\r
  22 import org.simantics.db.Session;\r
  23 \r
  24 /**\r
  25  * @author Tuukka Lehtonen\r
  26  */\r
  27 public class GlobalServiceInitializer implements ServiceInitializer {\r
  28 \r
  29     private static final String PLUGIN_ID           = "org.simantics.db.services";\r
  30 \r
  31     private static final String SERVICE_INITIALIZER = "serviceInitializer";\r
  32 \r
  33     public static final int     INITIALIZER_ERROR   = 1;\r
  34 \r
  35     @Override\r
  36     public IStatus initialize(final Session s) {\r
  37         MultiStatus problems = new MultiStatus(PLUGIN_ID, INITIALIZER_ERROR, "ServiceInitializer errors:", null);\r
  38 \r
  39         // Initialize adaption service\r
  40         merge(problems, new AdaptionServiceInitializer().initialize(s));\r
  41 \r
  42         //s.registerService(StructuralResourceListener.class, new StructuralResourceListenerImpl(s));\r
  43 \r
  44         // Find extensions if any are available\r
  45         IExtensionRegistry er = Platform.getExtensionRegistry();\r
  46         if (er != null) {\r
  47             IExtensionPoint ep = er.getExtensionPoint(PLUGIN_ID, SERVICE_INITIALIZER);\r
  48             if (ep != null) {\r
  49                 for (IConfigurationElement conf : ep.getConfigurationElements()) {\r
  50                     try {\r
  51 //                        System.out.println("initialize: " + conf.getAttribute("class") + " (id=" + conf.getAttribute("id") + ")");\r
  52                         ServiceInitializer initializer = (ServiceInitializer) conf.createExecutableExtension("class");\r
  53                         merge(problems, initializer.initialize(s));\r
  54                     } catch (CoreException e) {\r
  55                         IStatus status = new Status(IStatus.ERROR, conf.getDeclaringExtension().getNamespaceIdentifier(), "ServiceInitializer instantiation failed, see exception for details.", e);\r
  56                         problems.merge(status);\r
  57                     }\r
  58                 }\r
  59             }\r
  60         }\r
  61         if (problems.isOK())\r
  62             return Status.OK_STATUS;\r
  63         return problems;\r
  64     }\r
  65 \r
  66     public IStatus initialize(Session s, String initializerId) {\r
  67         if (initializerId == null)\r
  68             throw new IllegalArgumentException("null initializer id");\r
  69 \r
  70         // Find the matching service initializer extension\r
  71         for (IConfigurationElement conf : Platform.getExtensionRegistry().getExtensionPoint(PLUGIN_ID, SERVICE_INITIALIZER).getConfigurationElements()) {\r
  72             try {\r
  73                 String id = conf.getAttribute("id");\r
  74                 if (initializerId.equals(id)) {\r
  75 //                    System.out.println("initialize: " + conf.getAttribute("class"));\r
  76                     ServiceInitializer initializer = (ServiceInitializer) conf.createExecutableExtension("class");\r
  77                     return initializer.initialize(s);\r
  78                 }\r
  79             } catch (CoreException e) {\r
  80                 return new Status(IStatus.ERROR, conf.getDeclaringExtension().getNamespaceIdentifier(), "ServiceInitializer instantiation failed, see exception for details.", e);\r
  81             }\r
  82         }\r
  83         return new Status(IStatus.ERROR, PLUGIN_ID, "ServiceInitializer extension with id '" + initializerId + "' not found.", null);\r
  84     }\r
  85 \r
  86     private void merge(MultiStatus result, IStatus status) {\r
  87         if (!status.isOK())\r
  88             result.add(status);\r
  89     }\r
  90 \r
  91 }\r