--- /dev/null
+/*******************************************************************************\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;\r
+\r
+import java.util.Collection;\r
+import java.util.Collections;\r
+import java.util.HashMap;\r
+import java.util.Map;\r
+\r
+import org.osgi.framework.BundleContext;\r
+import org.osgi.framework.InvalidSyntaxException;\r
+import org.osgi.framework.ServiceReference;\r
+import org.simantics.db.internal.Activator;\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public final class Manager {\r
+\r
+ private Manager() {}\r
+\r
+ /**\r
+ * Search for registered database driver by driver id.\r
+ *\r
+ * @param id for database driver.\r
+ * @return database driver or null.\r
+ */\r
+ public static Driver getDriver(String id) {\r
+ Map<String, Driver> drivers = collectDrivers();\r
+ return drivers.get(id);\r
+ }\r
+\r
+ private static Map<String, Driver> collectDrivers() {\r
+ BundleContext context = Activator.getContext();\r
+ Collection<ServiceReference<Driver>> serviceReferences;\r
+ try {\r
+ serviceReferences = context.getServiceReferences(Driver.class, null);\r
+ } catch (InvalidSyntaxException e) {\r
+ e.printStackTrace();\r
+ serviceReferences = Collections.emptyList();\r
+ }\r
+ Map<String, Driver> drivers = new HashMap<>(serviceReferences.size());\r
+ for (ServiceReference<Driver> reference : serviceReferences) {\r
+ Driver driver = context.getService(reference);\r
+ String driverName = driver.getName();\r
+ if (driverName != null && !driverName.isEmpty()) {\r
+ drivers.put(driverName, driver);\r
+ }\r
+ }\r
+ return drivers;\r
+ }\r
+ \r
+ public static DatabaseUserAgent getUserAgent(String id) {\r
+ Map<String, DatabaseUserAgent> agents = collectUserAgents();\r
+ return agents.get(id);\r
+ }\r
+ \r
+ private static Map<String, DatabaseUserAgent> collectUserAgents() {\r
+ BundleContext context = Activator.getContext();\r
+ Collection<ServiceReference<DatabaseUserAgent>> serviceReferences;\r
+ try {\r
+ serviceReferences = context.getServiceReferences(DatabaseUserAgent.class, null);\r
+ } catch (InvalidSyntaxException e) {\r
+ e.printStackTrace();\r
+ serviceReferences = Collections.emptyList();\r
+ }\r
+ Map<String, DatabaseUserAgent> drivers = new HashMap<>(serviceReferences.size());\r
+ for (ServiceReference<DatabaseUserAgent> reference : serviceReferences) {\r
+ DatabaseUserAgent dbua = context.getService(reference);\r
+ String driverName = dbua.getId();\r
+ if (driverName != null && !driverName.isEmpty()) {\r
+ drivers.put(driverName, dbua);\r
+ }\r
+ }\r
+ return drivers;\r
+ }\r
+\r
+}\r