1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.db;
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14 import java.util.Collection;
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15 import java.util.Collections;
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16 import java.util.HashMap;
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17 import java.util.Map;
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19 import org.osgi.framework.BundleContext;
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20 import org.osgi.framework.InvalidSyntaxException;
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21 import org.osgi.framework.ServiceReference;
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22 import org.simantics.db.internal.Activator;
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25 * @author Antti Villberg
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27 public final class Manager {
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29 private Manager() {}
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32 * Search for registered database driver by driver id.
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34 * @param id for database driver.
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35 * @return database driver or null.
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37 public static Driver getDriver(String id) {
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38 Map<String, Driver> drivers = collectDrivers();
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39 return drivers.get(id);
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42 private static Map<String, Driver> collectDrivers() {
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43 BundleContext context = Activator.getContext();
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44 Collection<ServiceReference<Driver>> serviceReferences;
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46 serviceReferences = context.getServiceReferences(Driver.class, null);
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47 } catch (InvalidSyntaxException e) {
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48 e.printStackTrace();
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49 serviceReferences = Collections.emptyList();
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51 Map<String, Driver> drivers = new HashMap<>(serviceReferences.size());
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52 for (ServiceReference<Driver> reference : serviceReferences) {
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53 Driver driver = context.getService(reference);
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54 String driverName = driver.getName();
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55 if (driverName != null && !driverName.isEmpty()) {
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56 drivers.put(driverName, driver);
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62 public static DatabaseUserAgent getUserAgent(String id) {
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63 Map<String, DatabaseUserAgent> agents = collectUserAgents();
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64 return agents.get(id);
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67 private static Map<String, DatabaseUserAgent> collectUserAgents() {
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68 BundleContext context = Activator.getContext();
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69 Collection<ServiceReference<DatabaseUserAgent>> serviceReferences;
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71 serviceReferences = context.getServiceReferences(DatabaseUserAgent.class, null);
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72 } catch (InvalidSyntaxException e) {
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73 e.printStackTrace();
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74 serviceReferences = Collections.emptyList();
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76 Map<String, DatabaseUserAgent> drivers = new HashMap<>(serviceReferences.size());
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77 for (ServiceReference<DatabaseUserAgent> reference : serviceReferences) {
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78 DatabaseUserAgent dbua = context.getService(reference);
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79 String driverName = dbua.getId();
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80 if (driverName != null && !driverName.isEmpty()) {
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81 drivers.put(driverName, dbua);
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