Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.services / src / org / simantics / db / services / GlobalServiceInitializer.java

diff --git a/bundles/org.simantics.db.services/src/org/simantics/db/services/GlobalServiceInitializer.java b/bundles/org.simantics.db.services/src/org/simantics/db/services/GlobalServiceInitializer.java
new file mode 100644 (file)
index 0000000..90cbd38
--- /dev/null
+++ b/bundles/org.simantics.db.services/src/org/simantics/db/services/GlobalServiceInitializer.java
@@ -0,0 +1,91 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.services;\r
+\r
+import org.eclipse.core.runtime.CoreException;\r
+import org.eclipse.core.runtime.IConfigurationElement;\r
+import org.eclipse.core.runtime.IExtensionPoint;\r
+import org.eclipse.core.runtime.IExtensionRegistry;\r
+import org.eclipse.core.runtime.IStatus;\r
+import org.eclipse.core.runtime.MultiStatus;\r
+import org.eclipse.core.runtime.Platform;\r
+import org.eclipse.core.runtime.Status;\r
+import org.simantics.db.Session;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class GlobalServiceInitializer implements ServiceInitializer {\r
+\r
+    private static final String PLUGIN_ID           = "org.simantics.db.services";\r
+\r
+    private static final String SERVICE_INITIALIZER = "serviceInitializer";\r
+\r
+    public static final int     INITIALIZER_ERROR   = 1;\r
+\r
+    @Override\r
+    public IStatus initialize(final Session s) {\r
+        MultiStatus problems = new MultiStatus(PLUGIN_ID, INITIALIZER_ERROR, "ServiceInitializer errors:", null);\r
+\r
+        // Initialize adaption service\r
+        merge(problems, new AdaptionServiceInitializer().initialize(s));\r
+\r
+        //s.registerService(StructuralResourceListener.class, new StructuralResourceListenerImpl(s));\r
+\r
+        // Find extensions if any are available\r
+        IExtensionRegistry er = Platform.getExtensionRegistry();\r
+        if (er != null) {\r
+            IExtensionPoint ep = er.getExtensionPoint(PLUGIN_ID, SERVICE_INITIALIZER);\r
+            if (ep != null) {\r
+                for (IConfigurationElement conf : ep.getConfigurationElements()) {\r
+                    try {\r
+//                        System.out.println("initialize: " + conf.getAttribute("class") + " (id=" + conf.getAttribute("id") + ")");\r
+                        ServiceInitializer initializer = (ServiceInitializer) conf.createExecutableExtension("class");\r
+                        merge(problems, initializer.initialize(s));\r
+                    } catch (CoreException e) {\r
+                        IStatus status = new Status(IStatus.ERROR, conf.getDeclaringExtension().getNamespaceIdentifier(), "ServiceInitializer instantiation failed, see exception for details.", e);\r
+                        problems.merge(status);\r
+                    }\r
+                }\r
+            }\r
+        }\r
+        if (problems.isOK())\r
+            return Status.OK_STATUS;\r
+        return problems;\r
+    }\r
+\r
+    public IStatus initialize(Session s, String initializerId) {\r
+        if (initializerId == null)\r
+            throw new IllegalArgumentException("null initializer id");\r
+\r
+        // Find the matching service initializer extension\r
+        for (IConfigurationElement conf : Platform.getExtensionRegistry().getExtensionPoint(PLUGIN_ID, SERVICE_INITIALIZER).getConfigurationElements()) {\r
+            try {\r
+                String id = conf.getAttribute("id");\r
+                if (initializerId.equals(id)) {\r
+//                    System.out.println("initialize: " + conf.getAttribute("class"));\r
+                    ServiceInitializer initializer = (ServiceInitializer) conf.createExecutableExtension("class");\r
+                    return initializer.initialize(s);\r
+                }\r
+            } catch (CoreException e) {\r
+                return new Status(IStatus.ERROR, conf.getDeclaringExtension().getNamespaceIdentifier(), "ServiceInitializer instantiation failed, see exception for details.", e);\r
+            }\r
+        }\r
+        return new Status(IStatus.ERROR, PLUGIN_ID, "ServiceInitializer extension with id '" + initializerId + "' not found.", null);\r
+    }\r
+\r
+    private void merge(MultiStatus result, IStatus status) {\r
+        if (!status.isOK())\r
+            result.add(status);\r
+    }\r
+\r
+}\r