Source Code Cross Referenced for ConnectToAliasCommand.java in  » Database-Client » squirrel-sql-2.6.5a » net » sourceforge » squirrel_sql » client » mainframe » action » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database Client » squirrel sql 2.6.5a » net.sourceforge.squirrel_sql.client.mainframe.action 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package net.sourceforge.squirrel_sql.client.mainframe.action;
002:
003:        /*
004:         * Copyright (C) 2001-2004 Colin Bell and Johan Compagner
005:         * colbell@users.sourceforge.net
006:         * jcompagner@j-com.nl
007:         *
008:         * This library is free software; you can redistribute it and/or
009:         * modify it under the terms of the GNU Lesser General Public
010:         * License as published by the Free Software Foundation; either
011:         * version 2.1 of the License, or (at your option) any later version.
012:         *
013:         * This library is distributed in the hope that it will be useful,
014:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
015:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
016:         * Lesser General Public License for more details.
017:         *
018:         * You should have received a copy of the GNU Lesser General Public
019:         * License along with this library; if not, write to the Free Software
020:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
021:         */
022:        import java.sql.SQLException;
023:
024:        import javax.swing.SwingUtilities;
025:
026:        import net.sourceforge.squirrel_sql.client.IApplication;
027:        import net.sourceforge.squirrel_sql.client.gui.db.ConnectToAliasCallBack;
028:        import net.sourceforge.squirrel_sql.client.gui.db.ConnectionInternalFrame;
029:        import net.sourceforge.squirrel_sql.client.gui.db.ICompletionCallback;
030:        import net.sourceforge.squirrel_sql.client.gui.db.SQLAlias;
031:        import net.sourceforge.squirrel_sql.client.session.ISession;
032:        import net.sourceforge.squirrel_sql.client.session.SessionManager;
033:        import net.sourceforge.squirrel_sql.fw.gui.GUIUtils;
034:        import net.sourceforge.squirrel_sql.fw.id.IIdentifier;
035:        import net.sourceforge.squirrel_sql.fw.sql.ISQLConnection;
036:        import net.sourceforge.squirrel_sql.fw.sql.ISQLDriver;
037:        import net.sourceforge.squirrel_sql.fw.sql.SQLConnection;
038:        import net.sourceforge.squirrel_sql.fw.sql.SQLDriverPropertyCollection;
039:        import net.sourceforge.squirrel_sql.fw.util.ICommand;
040:        import net.sourceforge.squirrel_sql.fw.util.StringManager;
041:        import net.sourceforge.squirrel_sql.fw.util.StringManagerFactory;
042:        import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
043:        import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
044:
045:        /**
046:         * This <CODE>ICommand</CODE> allows the user to connect to
047:         * an <TT>ISQLAlias</TT>.
048:         *
049:         * @author	<A HREF="mailto:colbell@users.sourceforge.net">Colin Bell</A>
050:         */
051:        public class ConnectToAliasCommand implements  ICommand {
052:
053:            /** Internationalized strings for this class. */
054:            private static final StringManager s_stringMgr = StringManagerFactory
055:                    .getStringManager(ConnectToAliasCommand.class);
056:
057:            /** Logger for this class. */
058:            private static final ILogger s_log = LoggerController
059:                    .createLogger(ConnectToAliasCommand.class);
060:
061:            /** Application API. */
062:            private IApplication _app;
063:
064:            /** The <TT>ISQLAlias</TT> to connect to. */
065:            private SQLAlias _sqlAlias;
066:
067:            /** If <TT>true</TT> a session is to be created as well as connecting to database. */
068:            private boolean _createSession;
069:
070:            /** Callback to notify client on the progress of this command. */
071:            private ICompletionCallback _callback;
072:
073:            /**
074:             * Ctor. This ctor will create a new session as well as opening a connection.
075:             *
076:             * @param	app		The <TT>IApplication</TT> that defines app API.
077:             * @param	alias	The <TT>ISQLAlias</TT> to connect to.
078:             *
079:             * @throws	IllegalArgumentException
080:             *			Thrown if a <TT>null</TT> <TT>IApplication</TT> or
081:             *			<TT>ISQLAlias</TT> passed.
082:             */
083:            public ConnectToAliasCommand(IApplication app, SQLAlias sqlAlias) {
084:                this (app, sqlAlias, true, null);
085:            }
086:
087:            /**
088:             * Ctor.
089:             *
090:             * @param	app				The <TT>IApplication</TT> that defines app API.
091:             * @param	alias			The <TT>ISQLAlias</TT> to connect to.
092:             * @param	createSession	If <TT>true</TT> then create a session as well
093:             *							as connecting to the database.
094:             * @param	callback		Callback for client code to be informed of the
095:             *							progress of this command.
096:             *
097:             *			Thrown if a <TT>null</TT> <TT>IApplication</TT> or
098:             *			<TT>ISQLAlias</TT> passed.
099:             */
100:            public ConnectToAliasCommand(IApplication app, SQLAlias sqlAlias,
101:                    boolean createSession, ICompletionCallback callback) {
102:                super ();
103:                if (app == null) {
104:                    throw new IllegalArgumentException(
105:                            "Null IApplication passed");
106:                }
107:                if (sqlAlias == null) {
108:                    throw new IllegalArgumentException("Null ISQLAlias passed");
109:                }
110:                _app = app;
111:                _sqlAlias = sqlAlias;
112:                _createSession = createSession;
113:                _callback = callback != null ? callback
114:                        : new ConnectToAliasCallBack(app, _sqlAlias);
115:            }
116:
117:            /**
118:             * Display connection internal frame.
119:             */
120:            public void execute() {
121:                try {
122:                    final SheetHandler hdl = new SheetHandler(_app, _sqlAlias,
123:                            _createSession, _callback);
124:
125:                    if (SwingUtilities.isEventDispatchThread()) {
126:                        createConnectionInternalFrame(hdl);
127:                    } else {
128:                        SwingUtilities.invokeLater(new Runnable() {
129:                            public void run() {
130:                                createConnectionInternalFrame(hdl);
131:                            }
132:                        });
133:                    }
134:                } catch (Exception ex) {
135:                    _app.showErrorDialog(ex);
136:                }
137:            }
138:
139:            private void createConnectionInternalFrame(SheetHandler hdl) {
140:                ConnectionInternalFrame sheet = new ConnectionInternalFrame(
141:                        _app, _sqlAlias, hdl);
142:                _app.getMainFrame().addInternalFrame(sheet, true, null);
143:                GUIUtils.centerWithinDesktop(sheet);
144:                sheet.moveToFront();
145:                sheet.setVisible(true);
146:            }
147:
148:            /**
149:             * Handler used for connection internal frame actions.
150:             */
151:            private static class SheetHandler implements 
152:                    ConnectionInternalFrame.IHandler, Runnable {
153:                /** The connection internal frame. */
154:                private ConnectionInternalFrame _connSheet;
155:
156:                /** Application API. */
157:                private IApplication _app;
158:
159:                /** <TT>ISQLAlias</TT> to connect to. */
160:                private SQLAlias _alias;
161:
162:                /** If <TT>true</TT> a session is to be created as well as connecting to database. */
163:                private boolean _createSession;
164:
165:                /** User name to use to connect to alias. */
166:                private String _user;
167:
168:                /** Password to use to connect to alias. */
169:                private String _password;
170:
171:                /** Connection properties. */
172:                private SQLDriverPropertyCollection _props;
173:
174:                /** If <TT>true</TT> user has requested cancellation of the connection attempt. */
175:                private boolean _stopConnection;
176:
177:                /** Callback to notify client on the progress of this command. */
178:                private ICompletionCallback _callback;
179:
180:                /**
181:                 * Ctor.
182:                 *
183:                 * @param	app				Application API.
184:                 * @param	alias			Database alias to connect to.
185:                 * @param	createSession	If <TT>true</TT> a session should be created.
186:                 * @param	cmd				Command executing this handler.
187:                 *
188:                 * @throws	IllegalArgumentException
189:                 * 			Thrown if <TT>null</TT>IApplication</TT>, <TT>ISQLAlias</TT>,
190:                 * 			or <TT>ICompletionCallback</TT> passed.
191:                 */
192:                private SheetHandler(IApplication app, SQLAlias alias,
193:                        boolean createSession, ICompletionCallback callback) {
194:                    super ();
195:                    if (app == null) {
196:                        throw new IllegalArgumentException(
197:                                "IApplication == null");
198:                    }
199:                    if (alias == null) {
200:                        throw new IllegalArgumentException("ISQLAlias == null");
201:                    }
202:                    if (alias == null) {
203:                        throw new IllegalArgumentException(
204:                                "ICompletionCallback == null");
205:                    }
206:                    _app = app;
207:                    _alias = alias;
208:                    _createSession = createSession;
209:                    _callback = callback;
210:                }
211:
212:                /**
213:                 * User has clicked the OK button to connect to the alias. Run the connection
214:                 * attempt in a separate thread.
215:                 *
216:                 * @param	connSheet	Connection internal frame.
217:                 * @param	user		The user name entered.
218:                 * @param	password	The password entered.
219:                 * @param	props		Connection properties.
220:                 */
221:                public void performOK(ConnectionInternalFrame connSheet,
222:                        String user, String password,
223:                        SQLDriverPropertyCollection props) {
224:                    _stopConnection = false;
225:                    _connSheet = connSheet;
226:                    _user = user;
227:                    _password = password;
228:                    _props = props;
229:                    _app.getThreadPool().addTask(this );
230:                }
231:
232:                /**
233:                 * User has clicked the Cancel button to cancel this connection attempt.
234:                 *
235:                 * @param	connSheet	Connection internal frame.
236:                 */
237:                public void performCancelConnect(
238:                        ConnectionInternalFrame connSheet) {
239:                    // if blocked that means that it doesn't help anymore
240:                    // Or an error dialog is shown or the connection is made
241:                    // and the SessionFrame is being constructed/shown.
242:                    synchronized (this ) {
243:                        _stopConnection = true;
244:                    }
245:                }
246:
247:                /**
248:                 * User has clicked the Close button to close the internal frame.
249:                 *
250:                 * @param	connSheet	Connection internal frame.
251:                 */
252:                public void performClose(ConnectionInternalFrame connSheet) {
253:                    // Empty.
254:                }
255:
256:                /**
257:                 * Execute task. Connect to the alias with the information entered
258:                 * in the connection internal frame.
259:                 */
260:                public void run() {
261:                    SQLConnection conn = null;
262:                    final IIdentifier driverID = _alias.getDriverIdentifier();
263:                    final ISQLDriver sqlDriver = _app.getDataCache().getDriver(
264:                            driverID);
265:
266:                    try {
267:                        OpenConnectionCommand cmd = new OpenConnectionCommand(
268:                                _app, _alias, _user, _password, _props);
269:                        cmd.execute();
270:
271:                        if (_alias.isAutoLogon()) {
272:                            // If the user checked Auto Logon but gave wrong username/password
273:                            // in the Alias definition. He will be asked to enter username/password again in an extra dialog.
274:                            // Here for convenience we transfer these data back into the Alias.
275:                            // Note: Don't do this when Auto Logon is false.
276:                            _alias.setUserName(_user);
277:                            _alias.setPassword(_password);
278:                        }
279:
280:                        conn = cmd.getSQLConnection();
281:                        synchronized (this ) {
282:                            if (_stopConnection) {
283:                                if (conn != null) {
284:                                    closeConnection(conn);
285:                                    conn = null;
286:                                }
287:                            } else {
288:                                // After this it can't be stopped anymore!
289:                                _callback.connected(conn);
290:                                if (_createSession) {
291:                                    createSession(sqlDriver, conn);
292:                                } else {
293:                                    _connSheet.executed(true);
294:                                }
295:                            }
296:                        }
297:                    } catch (Throwable ex) {
298:                        _connSheet.executed(false);
299:                        _callback.errorOccured(ex);
300:                    }
301:                }
302:
303:                private void closeConnection(ISQLConnection conn) {
304:                    if (conn != null) {
305:                        try {
306:                            conn.close();
307:                        } catch (SQLException ex) {
308:                            // i18n[ConnectToAliasCommand.error.closeconnection=Error occured closing Connection]
309:                            s_log
310:                                    .error(
311:                                            s_stringMgr
312:                                                    .getString("ConnectToAliasCommand.error.closeconnection"),
313:                                            ex);
314:                        }
315:                    }
316:                }
317:
318:                private ISession createSession(ISQLDriver sqlDriver,
319:                        SQLConnection conn) {
320:                    SessionManager sm = _app.getSessionManager();
321:                    final ISession session = sm.createSession(_app, sqlDriver,
322:                            _alias, conn, _user, _password);
323:                    _callback.sessionCreated(session);
324:                    SwingUtilities.invokeLater(new Runner(session, _connSheet));
325:                    return session;
326:                }
327:            }
328:
329:            private static final class Runner implements  Runnable {
330:                private final ISession _session;
331:                private final ConnectionInternalFrame _connSheet;
332:
333:                Runner(ISession session, ConnectionInternalFrame connSheet) {
334:                    super ();
335:                    _session = session;
336:                    _connSheet = connSheet;
337:                }
338:
339:                public void run() {
340:                    final IApplication app = _session.getApplication();
341:                    try {
342:                        app.getPluginManager().sessionCreated(_session);
343:                        app.getWindowManager().createInternalFrame(_session);
344:                        _connSheet.executed(true);
345:                    } catch (Throwable th) {
346:                        app
347:                                .showErrorDialog(
348:                                        s_stringMgr
349:                                                .getString("ConnectToAliasCommand.error.opensession"),
350:                                        th);
351:                    }
352:                }
353:            }
354:        }
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