Source Code Cross Referenced for DataTypeTimestamp.java in  » Database-Client » squirrel-sql-2.6.5a » net » sourceforge » squirrel_sql » fw » datasetviewer » cellcomponent » 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.fw.datasetviewer.cellcomponent 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package net.sourceforge.squirrel_sql.fw.datasetviewer.cellcomponent;
002:
003:        /*
004:         * Copyright (C) 2001-2004 Colin Bell
005:         * colbell@users.sourceforge.net
006:         *
007:         * This library is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU Lesser General Public
009:         * License as published by the Free Software Foundation; either
010:         * version 2.1 of the License, or (at your option) any later version.
011:         *
012:         * This library is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015:         * Lesser General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this library; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020:         */
021:        import java.awt.GridBagConstraints;
022:        import java.awt.GridBagLayout;
023:        import java.awt.Insets;
024:        import java.awt.event.KeyEvent;
025:        import java.awt.event.MouseAdapter;
026:        import java.awt.event.MouseEvent;
027:        import java.io.FileInputStream;
028:        import java.io.FileOutputStream;
029:        import java.io.IOException;
030:        import java.io.InputStreamReader;
031:        import java.io.OutputStreamWriter;
032:        import java.sql.PreparedStatement;
033:        import java.sql.ResultSet;
034:        import java.sql.Timestamp;
035:        import java.text.DateFormat;
036:
037:        import javax.swing.BorderFactory;
038:        import javax.swing.ButtonGroup;
039:        import javax.swing.ButtonModel;
040:        import javax.swing.JCheckBox;
041:        import javax.swing.JComboBox;
042:        import javax.swing.JLabel;
043:        import javax.swing.JRadioButton;
044:        import javax.swing.JTable;
045:        import javax.swing.JTextArea;
046:        import javax.swing.JTextField;
047:        import javax.swing.SwingUtilities;
048:        import javax.swing.event.ChangeEvent;
049:        import javax.swing.event.ChangeListener;
050:        import javax.swing.text.JTextComponent;
051:
052:        import net.sourceforge.squirrel_sql.fw.datasetviewer.CellDataPopup;
053:        import net.sourceforge.squirrel_sql.fw.datasetviewer.ColumnDisplayDefinition;
054:        import net.sourceforge.squirrel_sql.fw.gui.OkJPanel;
055:        import net.sourceforge.squirrel_sql.fw.gui.RightLabel;
056:        import net.sourceforge.squirrel_sql.fw.sql.ISQLDatabaseMetaData;
057:        import net.sourceforge.squirrel_sql.fw.util.StringManager;
058:        import net.sourceforge.squirrel_sql.fw.util.StringManagerFactory;
059:        import net.sourceforge.squirrel_sql.fw.util.ThreadSafeDateFormat;
060:        import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
061:        import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
062:
063:        /**
064:         * @author gwg
065:         *
066:         * This class provides the display components for handling Timestamp data types,
067:         * specifically SQL type TIMESTAMP.
068:         * The display components are for:
069:         * <UL>
070:         * <LI> read-only display within a table cell
071:         * <LI> editing within a table cell
072:         * <LI> read-only or editing display within a separate window
073:         * </UL>
074:         * The class also contains
075:         * <UL>
076:         * <LI> a function to compare two display values
077:         * to see if they are equal. This is needed because the display format
078:         * may not be the same as the internal format, and all internal object
079:         * types may not provide an appropriate equals() function.
080:         * <LI> a function to return a printable text form of the cell contents,
081:         * which is used in the text version of the table.
082:         * </UL>
083:         * <P>
084:         * The components returned from this class extend RestorableJTextField
085:         * and RestorableJTextArea for use in editing table cells that
086:         * contain values of this data type. It provides the special behavior for null
087:         * handling and resetting the cell to the original value.
088:         */
089:
090:        public class DataTypeTimestamp extends BaseDataTypeComponent implements 
091:                IDataTypeComponent {
092:
093:            private static final StringManager s_stringMgr = StringManagerFactory
094:                    .getStringManager(DataTypeTimestamp.class);
095:
096:            /** Logger for this class. */
097:            private static ILogger s_log = LoggerController
098:                    .createLogger(DataTypeTimestamp.class);
099:
100:            /* whether nulls are allowed or not */
101:            private boolean _isNullable;
102:
103:            /* table of which we are part (needed for creating popup dialog) */
104:            private JTable _table;
105:
106:            /* The JTextComponent that is being used for editing */
107:            private IRestorableTextComponent _textComponent;
108:
109:            /* The CellRenderer used for this data type */
110:            //??? For now, use the same renderer as everyone else.
111:            //??
112:            //?? IN FUTURE: change this to use a new instance of renederer
113:            //?? for this data type.
114:            private DefaultColumnRenderer _renderer = DefaultColumnRenderer
115:                    .getInstance();
116:
117:            /**
118:             * Name of this class, which is needed because the class name is needed
119:             * by the static method getControlPanel, so we cannot use something
120:             * like getClass() to find this name.
121:             */
122:            private static final String this ClassName = "net.sourceforge.squirrel_sql.fw.datasetviewer.cellcomponent.DataTypeTimestamp";
123:
124:            /** Default date format */
125:            private static int DEFAULT_LOCALE_FORMAT = DateFormat.SHORT;
126:
127:            /*
128:             * Properties set-able by the user
129:             */
130:            // flag for whether we have already loaded the properties or not
131:            private static boolean propertiesAlreadyLoaded = false;
132:
133:            // flag for whether to use the default Java format (true)
134:            // or the Locale-dependent format (false)
135:            private static boolean useJavaDefaultFormat = true;
136:
137:            // which locale-dependent format to use; short, medium, long, or full
138:            private static int localeFormat = DEFAULT_LOCALE_FORMAT;
139:
140:            // Whether to force user to enter dates in exact format or use heuristics to guess it
141:            private static boolean lenient = true;
142:
143:            // The DateFormat object to use for all locale-dependent formatting.
144:            // This is reset each time the user changes the previous settings.
145:            private static ThreadSafeDateFormat dateFormat = new ThreadSafeDateFormat(
146:                    localeFormat, localeFormat);
147:
148:            // values for how to use timestamps in WHERE clauses
149:            public static final int DO_NOT_USE = 0;
150:            public static final int USE_JDBC_ESCAPE_FORMAT = 1;
151:            public static final int USE_STRING_FORMAT = 2;
152:
153:            // Define whether or not to use Timestamp in internally generated WHERE
154:            // clauses, and if so what format to use.
155:            private static int whereClauseUsage = USE_JDBC_ESCAPE_FORMAT;
156:
157:            /** 
158:             * The DTProperties key that is used to store and get the mode that 
159:             * determines how timestamps are used in where clauses
160:             */
161:            public static String WHERE_CLAUSE_USAGE_KEY = "whereClauseUsage";
162:
163:            private boolean _renderExceptionHasBeenLogged;
164:
165:            /**
166:             * Constructor - save the data needed by this data type.
167:             */
168:            public DataTypeTimestamp(JTable table,
169:                    ColumnDisplayDefinition colDef) {
170:                _table = table;
171:                _colDef = colDef;
172:                _isNullable = colDef.isNullable();
173:
174:                loadProperties();
175:            }
176:
177:            /** Internal function to get the user-settable properties from the DTProperties,
178:             * if they exist, and to ensure that defaults are set if the properties have
179:             * not yet been created.
180:             * <P>
181:             * This method may be called from different places depending on whether
182:             * an instance of this class is created before the user brings up the Session
183:             * Properties window. In either case, the data is static and is set only
184:             * the first time we are called.
185:             */
186:            private static void loadProperties() {
187:
188:                //set the property values
189:                // Note: this may have already been done by another instance of
190:                // this DataType created to handle a different column.
191:                if (propertiesAlreadyLoaded == false) {
192:                    // get parameters previously set by user, or set default values
193:                    useJavaDefaultFormat = true; // set to use the Java default
194:                    String useJavaDefaultFormatString = DTProperties.get(
195:                            this ClassName, "useJavaDefaultFormat");
196:                    if (useJavaDefaultFormatString != null
197:                            && useJavaDefaultFormatString.equals("false"))
198:                        useJavaDefaultFormat = false;
199:
200:                    // get which locale-dependent format to use
201:                    localeFormat = DateFormat.SHORT; // set to use the Java default
202:                    String localeFormatString = DTProperties.get(this ClassName,
203:                            "localeFormat");
204:                    if (localeFormatString != null)
205:                        localeFormat = Integer.parseInt(localeFormatString);
206:
207:                    // use lenient input or force user to enter exact format
208:                    lenient = true; // set to allow less stringent input
209:                    String lenientString = DTProperties.get(this ClassName,
210:                            "lenient");
211:                    if (lenientString != null && lenientString.equals("false"))
212:                        lenient = false;
213:
214:                    // how to use Timestamp in WHERE clauses
215:                    whereClauseUsage = USE_JDBC_ESCAPE_FORMAT; // default to SQL standard
216:                    String whereClauseUsageString = DTProperties.get(
217:                            this ClassName, "whereClauseUsage");
218:                    if (whereClauseUsageString != null)
219:                        whereClauseUsage = Integer
220:                                .parseInt(whereClauseUsageString);
221:                }
222:            }
223:
224:            /**
225:             * Return the name of the java class used to hold this data type.
226:             */
227:            public String getClassName() {
228:                return "java.sql.Timestamp";
229:            }
230:
231:            /**
232:             * Determine if two objects of this data type contain the same value.
233:             * Neither of the objects is null
234:             */
235:            public boolean areEqual(Object obj1, Object obj2) {
236:                return ((Timestamp) obj1).equals(obj2);
237:            }
238:
239:            /*
240:             * First we have the methods for in-cell and Text-table operations
241:             */
242:
243:            /**
244:             * Render a value into text for this DataType.
245:             */
246:            public String renderObject(Object value) {
247:                // use the Java default date-to-string
248:                if (useJavaDefaultFormat == true || value == null)
249:                    return (String) _renderer.renderObject(value);
250:
251:                // use a date formatter
252:                try {
253:                    return (String) _renderer.renderObject(dateFormat
254:                            .format(value));
255:                } catch (Exception e) {
256:                    if (false == _renderExceptionHasBeenLogged) {
257:                        _renderExceptionHasBeenLogged = true;
258:                        s_log.error("Could not format \"" + value
259:                                + "\" as date type", e);
260:                    }
261:                    return (String) _renderer.renderObject(value);
262:                }
263:
264:            }
265:
266:            /**
267:             * This Data Type can be edited in a table cell.
268:             */
269:            public boolean isEditableInCell(Object originalValue) {
270:                return true;
271:            }
272:
273:            /**
274:             * See if a value in a column has been limited in some way and
275:             * needs to be re-read before being used for editing.
276:             * For read-only tables this may actually return true since we want
277:             * to be able to view the entire contents of the cell even if it was not
278:             * completely loaded during the initial table setup.
279:             */
280:            public boolean needToReRead(Object originalValue) {
281:                // this DataType does not limit the data read during the initial load of the table,
282:                // so there is no need to re-read the complete data later
283:                return false;
284:            }
285:
286:            /**
287:             * Return a JTextField usable in a CellEditor.
288:             */
289:            public JTextField getJTextField() {
290:                _textComponent = new RestorableJTextField();
291:
292:                // special handling of operations while editing this data type
293:                ((RestorableJTextField) _textComponent)
294:                        .addKeyListener(new KeyTextHandler());
295:
296:                //
297:                // handle mouse events for double-click creation of popup dialog.
298:                // This happens only in the JTextField, not the JTextArea, so we can
299:                // make this an inner class within this method rather than a separate
300:                // inner class as is done with the KeyTextHandler class.
301:                //
302:                ((RestorableJTextField) _textComponent)
303:                        .addMouseListener(new MouseAdapter() {
304:                            public void mousePressed(MouseEvent evt) {
305:                                if (evt.getClickCount() == 2) {
306:                                    MouseEvent tableEvt = SwingUtilities
307:                                            .convertMouseEvent(
308:                                                    (RestorableJTextField) DataTypeTimestamp.this ._textComponent,
309:                                                    evt,
310:                                                    DataTypeTimestamp.this ._table);
311:                                    CellDataPopup.showDialog(
312:                                            DataTypeTimestamp.this ._table,
313:                                            DataTypeTimestamp.this ._colDef,
314:                                            tableEvt, true);
315:                                }
316:                            }
317:                        }); // end of mouse listener
318:
319:                return (JTextField) _textComponent;
320:            }
321:
322:            /**
323:             * Implement the interface for validating and converting to internal object.
324:             * Null is a valid successful return, so errors are indicated only by
325:             * existance or not of a message in the messageBuffer.
326:             */
327:            public Object validateAndConvert(String value,
328:                    Object originalValue, StringBuffer messageBuffer) {
329:                // handle null, which is shown as the special string "<null>"
330:                if (value.equals("<null>") || value.equals(""))
331:                    return null;
332:
333:                // Do the conversion into the object in a safe manner
334:                try {
335:                    if (useJavaDefaultFormat) {
336:                        Object obj = Timestamp.valueOf(value);
337:                        return obj;
338:                    } else {
339:                        // use the DateFormat to parse
340:                        java.util.Date javaDate = dateFormat.parse(value);
341:                        return new Timestamp(javaDate.getTime());
342:                    }
343:                } catch (Exception e) {
344:                    messageBuffer.append(e.toString() + "\n");
345:                    //?? do we need the message also, or is it automatically part of the toString()?
346:                    //messageBuffer.append(e.getMessage());
347:                    return null;
348:                }
349:            }
350:
351:            /**
352:             * If true, this tells the PopupEditableIOPanel to use the
353:             * binary editing panel rather than a pure text panel.
354:             * The binary editing panel assumes the data is an array of bytes,
355:             * converts it into text form, allows the user to change how that
356:             * data is displayed (e.g. Hex, Decimal, etc.), and converts
357:             * the data back from text to bytes when the user editing is completed.
358:             * If this returns false, this DataType class must
359:             * convert the internal data into a text string that
360:             * can be displayed (and edited, if allowed) in a TextField
361:             * or TextArea, and must handle all
362:             * user key strokes related to editing of that data.
363:             */
364:            public boolean useBinaryEditingPanel() {
365:                return false;
366:            }
367:
368:            /*
369:             * Now the functions for the Popup-related operations.
370:             */
371:
372:            /**
373:             * Returns true if data type may be edited in the popup,
374:             * false if not.
375:             */
376:            public boolean isEditableInPopup(Object originalValue) {
377:                return true;
378:            }
379:
380:            /*
381:             * Return a JTextArea usable in the CellPopupDialog
382:             * and fill in the value.
383:             */
384:            public JTextArea getJTextArea(Object value) {
385:                _textComponent = new RestorableJTextArea();
386:
387:                // value is a simple string representation of the data,
388:                // the same one used in Text and in-cell operations.
389:                ((RestorableJTextArea) _textComponent)
390:                        .setText(renderObject(value));
391:
392:                // special handling of operations while editing this data type
393:                ((RestorableJTextArea) _textComponent)
394:                        .addKeyListener(new KeyTextHandler());
395:
396:                return (RestorableJTextArea) _textComponent;
397:            }
398:
399:            /**
400:             * Validating and converting in Popup is identical to cell-related operation.
401:             */
402:            public Object validateAndConvertInPopup(String value,
403:                    Object originalValue, StringBuffer messageBuffer) {
404:                return validateAndConvert(value, originalValue, messageBuffer);
405:            }
406:
407:            /*
408:             * The following is used in both cell and popup operations.
409:             */
410:
411:            /*
412:             * Internal class for handling key events during editing
413:             * of both JTextField and JTextArea.
414:             */
415:            private class KeyTextHandler extends BaseKeyTextHandler {
416:                public void keyTyped(KeyEvent e) {
417:                    char c = e.getKeyChar();
418:
419:                    // as a coding convenience, create a reference to the text component
420:                    // that is typecast to JTextComponent. this is not essential, as we
421:                    // could typecast every reference, but this makes the code cleaner
422:                    JTextComponent _theComponent = (JTextComponent) DataTypeTimestamp.this ._textComponent;
423:                    String text = _theComponent.getText();
424:
425:                    // tabs and newlines get put into the text before this check,
426:                    // so remove them
427:                    // This only applies to Popup editing since these chars are
428:                    // not passed to this level by the in-cell editor.
429:                    if (c == KeyEvent.VK_TAB || c == KeyEvent.VK_ENTER) {
430:                        // remove all instances of the offending char
431:                        int index = text.indexOf(c);
432:                        if (index != -1) {
433:                            if (index == text.length() - 1) {
434:                                text = text.substring(0, text.length() - 1); // truncate string
435:                            } else {
436:                                text = text.substring(0, index)
437:                                        + text.substring(index + 1);
438:                            }
439:                            ((IRestorableTextComponent) _theComponent)
440:                                    .updateText(text);
441:                            _theComponent.getToolkit().beep();
442:                        }
443:                        e.consume();
444:                    }
445:
446:                    // handle cases of null
447:                    // The processing is different when nulls are allowed and when they are not.
448:                    //
449:
450:                    if (DataTypeTimestamp.this ._isNullable) {
451:
452:                        // user enters something when field is null
453:                        if (text.equals("<null>")) {
454:                            if ((c == KeyEvent.VK_BACK_SPACE)
455:                                    || (c == KeyEvent.VK_DELETE)) {
456:                                // delete when null => original value
457:                                DataTypeTimestamp.this ._textComponent
458:                                        .restoreText();
459:                                e.consume();
460:                            } else {
461:                                // non-delete when null => clear field and add text
462:                                DataTypeTimestamp.this ._textComponent
463:                                        .updateText("");
464:                                // fall through to normal processing of this key stroke
465:                            }
466:                        } else {
467:                            // check for user deletes last thing in field
468:                            if ((c == KeyEvent.VK_BACK_SPACE)
469:                                    || (c == KeyEvent.VK_DELETE)) {
470:                                if (text.length() <= 1) {
471:                                    // about to delete last thing in field, so replace with null
472:                                    DataTypeTimestamp.this ._textComponent
473:                                            .updateText("<null>");
474:                                    e.consume();
475:                                }
476:                            }
477:                        }
478:                    } else {
479:                        // field is not nullable
480:                        //
481:                        handleNotNullableField(text, c, e, _textComponent);
482:                    }
483:                }
484:            }
485:
486:            /*
487:             * DataBase-related functions
488:             */
489:
490:            /**
491:             * On input from the DB, read the data from the ResultSet into the appropriate
492:             * type of object to be stored in the table cell.
493:             */
494:            public Object readResultSet(ResultSet rs, int index,
495:                    boolean limitDataRead) throws java.sql.SQLException {
496:
497:                Timestamp data = rs.getTimestamp(index);
498:                if (rs.wasNull())
499:                    return null;
500:                else
501:                    return data;
502:            }
503:
504:            /**
505:             * When updating the database, generate a string form of this object value
506:             * that can be used in the WHERE clause to match the value in the database.
507:             * A return value of null means that this column cannot be used in the WHERE
508:             * clause, while a return of "null" (or "is null", etc) means that the column
509:             * can be used in the WHERE clause and the value is actually a null value.
510:             * This function must also include the column label so that its output
511:             * is of the form:
512:             * 	"columnName = value"
513:             * or
514:             * 	"columnName is null"
515:             * or whatever is appropriate for this column in the database.
516:             */
517:            public String getWhereClauseValue(Object value,
518:                    ISQLDatabaseMetaData md) {
519:                if (whereClauseUsage == DO_NOT_USE)
520:                    return "";
521:                if (value == null || value.toString() == null
522:                        || value.toString().length() == 0)
523:                    return _colDef.getLabel() + " IS NULL";
524:                else if (whereClauseUsage == USE_JDBC_ESCAPE_FORMAT)
525:                    return _colDef.getLabel() + "={ts '" + value.toString()
526:                            + "'}";
527:                else
528:                    return _colDef.getLabel() + "='" + value.toString() + "'";
529:            }
530:
531:            /**
532:             * When updating the database, insert the appropriate datatype into the
533:             * prepared statment at the given variable position.
534:             */
535:            public void setPreparedStatementValue(PreparedStatement pstmt,
536:                    Object value, int position) throws java.sql.SQLException {
537:                if (value == null) {
538:                    pstmt.setNull(position, _colDef.getSqlType());
539:                } else {
540:                    pstmt.setTimestamp(position, ((Timestamp) value));
541:                }
542:            }
543:
544:            /**
545:             * Get a default value for the table used to input data for a new row
546:             * to be inserted into the DB.
547:             */
548:            public Object getDefaultValue(String dbDefaultValue) {
549:                if (dbDefaultValue != null) {
550:                    // try to use the DB default value
551:                    StringBuffer mbuf = new StringBuffer();
552:                    Object newObject = validateAndConvert(dbDefaultValue, null,
553:                            mbuf);
554:
555:                    // if there was a problem with converting, then just fall through
556:                    // and continue as if there was no default given in the DB.
557:                    // Otherwise, use the converted object
558:                    if (mbuf.length() == 0)
559:                        return newObject;
560:                }
561:
562:                // no default in DB.  If nullable, use null.
563:                if (_isNullable)
564:                    return null;
565:
566:                // field is not nullable, so create a reasonable default value
567:                return new Timestamp(new java.util.Date().getTime());
568:            }
569:
570:            /*
571:             * File IO related functions
572:             */
573:
574:            /**
575:             * Say whether or not object can be exported to and imported from
576:             * a file.  We put both export and import together in one test
577:             * on the assumption that all conversions can be done both ways.
578:             */
579:            public boolean canDoFileIO() {
580:                return true;
581:            }
582:
583:            /**
584:             * Read a file and construct a valid object from its contents.
585:             * Errors are returned by throwing an IOException containing the
586:             * cause of the problem as its message.
587:             * <P>
588:             * DataType is responsible for validating that the imported
589:             * data can be converted to an object, and then must return
590:             * a text string that can be used in the Popup window text area.
591:             * This object-to-text conversion is the same as is done by
592:             * the DataType object internally in the getJTextArea() method.
593:             *
594:             * <P>
595:             * File is assumed to be and ASCII string of digits
596:             * representing a value of this data type.
597:             */
598:            public String importObject(FileInputStream inStream)
599:                    throws IOException {
600:
601:                InputStreamReader inReader = new InputStreamReader(inStream);
602:
603:                int fileSize = inStream.available();
604:
605:                char charBuf[] = new char[fileSize];
606:
607:                int count = inReader.read(charBuf, 0, fileSize);
608:
609:                if (count != fileSize)
610:                    throw new IOException("Could read only " + count
611:                            + " chars from a total file size of " + fileSize
612:                            + ". Import failed.");
613:
614:                // convert file text into a string
615:                // Special case: some systems tack a newline at the end of
616:                // the text read.  Assume that if last char is a newline that
617:                // we want everything else in the line.
618:                String fileText;
619:                if (charBuf[count - 1] == KeyEvent.VK_ENTER)
620:                    fileText = new String(charBuf, 0, count - 1);
621:                else
622:                    fileText = new String(charBuf);
623:
624:                // test that the string is valid by converting it into an
625:                // object of this data type
626:                StringBuffer messageBuffer = new StringBuffer();
627:                validateAndConvertInPopup(fileText, null, messageBuffer);
628:                if (messageBuffer.length() > 0) {
629:                    // convert number conversion issue into IO issue for consistancy
630:                    throw new IOException(
631:                            "Text does not represent data of type "
632:                                    + getClassName() + ".  Text was:\n"
633:                                    + fileText);
634:                }
635:
636:                // return the text from the file since it does
637:                // represent a valid data value
638:                return fileText;
639:            }
640:
641:            /**
642:             * Construct an appropriate external representation of the object
643:             * and write it to a file.
644:             * Errors are returned by throwing an IOException containing the
645:             * cause of the problem as its message.
646:             * <P>
647:             * DataType is responsible for validating that the given text
648:             * text from a Popup JTextArea can be converted to an object.
649:             * This text-to-object conversion is the same as validateAndConvertInPopup,
650:             * which may be used internally by the object to do the validation.
651:             * <P>
652:             * The DataType object must flush and close the output stream before returning.
653:             * Typically it will create another object (e.g. an OutputWriter), and
654:             * that is the object that must be flushed and closed.
655:             *
656:             * <P>
657:             * File is assumed to be and ASCII string of digits
658:             * representing a value of this data type.
659:             */
660:            public void exportObject(FileOutputStream outStream, String text)
661:                    throws IOException {
662:
663:                OutputStreamWriter outWriter = new OutputStreamWriter(outStream);
664:
665:                // check that the text is a valid representation
666:                StringBuffer messageBuffer = new StringBuffer();
667:                validateAndConvertInPopup(text, null, messageBuffer);
668:                if (messageBuffer.length() > 0) {
669:                    // there was an error in the conversion
670:                    throw new IOException(new String(messageBuffer));
671:                }
672:
673:                // just send the text to the output file
674:                outWriter.write(text);
675:                outWriter.flush();
676:                outWriter.close();
677:            }
678:
679:            /*
680:             * Property change control panel
681:             */
682:
683:            /**
684:             * Generate a JPanel containing controls that allow the user
685:             * to adjust the properties for this DataType.
686:             * All properties are static accross all instances of this DataType.
687:             * However, the class may choose to apply the information differentially,
688:             * such as keeping a list (also entered by the user) of table/column names
689:             * for which certain properties should be used.
690:             * <P>
691:             * This is called ONLY if there is at least one property entered into the DTProperties
692:             * for this class.
693:             * <P>
694:             * Since this method is called by reflection on the Method object derived from this class,
695:             * it does not need to be included in the Interface.
696:             * It would be nice to include this in the Interface for consistancy, documentation, etc,
697:             * but the Interface does not seem to like static methods.
698:             */
699:            public static OkJPanel getControlPanel() {
700:
701:                /*
702:                 * If you add this method to one of the standard DataTypes in the
703:                 * fw/datasetviewer/cellcomponent directory, you must also add the name
704:                 * of that DataType class to the list in CellComponentFactory, method
705:                 * getControlPanels, variable named initialClassNameList.
706:                 * If the class is being registered with the factory using registerDataType,
707:                 * then you should not include the class name in the list (it will be found
708:                 * automatically), but if the DataType is part of the case statement in the
709:                 * factory method getDataTypeObject, then it does need to be explicitly listed
710:                 * in the getControlPanels method also.
711:                 */
712:
713:                // if this panel is called before any instances of the class have been
714:                // created, we need to load the properties from the DTProperties.
715:                loadProperties();
716:
717:                return new TimestampOkJPanel();
718:            }
719:
720:            // Class that displays the various formats available for dates
721:            public static class DateFormatTypeCombo extends JComboBox {
722:                private static final long serialVersionUID = -923184160665210096L;
723:
724:                public DateFormatTypeCombo() {
725:
726:                    // i18n[dataTypeTimestamp.full=Full ({0})]
727:                    addItem(s_stringMgr.getString("dataTypeTimestamp.full",
728:                            DateFormat.getDateTimeInstance(DateFormat.FULL,
729:                                    DateFormat.FULL).format(
730:                                    new java.util.Date())));
731:                    // i18n[dataTypeTimestamp.long=Long ({0})]
732:                    addItem(s_stringMgr.getString("dataTypeTimestamp.long",
733:                            DateFormat.getDateTimeInstance(DateFormat.LONG,
734:                                    DateFormat.LONG).format(
735:                                    new java.util.Date())));
736:                    // i18n[dataTypeTimestamp.medium=Medium ({0})]
737:                    addItem(s_stringMgr.getString("dataTypeTimestamp.medium",
738:                            DateFormat.getDateTimeInstance(DateFormat.MEDIUM,
739:                                    DateFormat.MEDIUM).format(
740:                                    new java.util.Date())));
741:                    // i18n[dataTypeTimestamp.short=Short ({0})]
742:                    addItem(s_stringMgr.getString("dataTypeTimestamp.short",
743:                            DateFormat.getDateTimeInstance(DateFormat.SHORT,
744:                                    DateFormat.SHORT).format(
745:                                    new java.util.Date())));
746:                }
747:
748:                public void setSelectedIndex(int option) {
749:                    if (option == DateFormat.SHORT)
750:                        super .setSelectedIndex(3);
751:                    else if (option == DateFormat.MEDIUM)
752:                        super .setSelectedIndex(2);
753:                    else if (option == DateFormat.LONG)
754:                        super .setSelectedIndex(1);
755:                    else
756:                        super .setSelectedIndex(0);
757:                }
758:
759:                public int getValue() {
760:                    if (getSelectedIndex() == 3)
761:                        return DateFormat.SHORT;
762:                    else if (getSelectedIndex() == 2)
763:                        return DateFormat.MEDIUM;
764:                    else if (getSelectedIndex() == 1)
765:                        return DateFormat.LONG;
766:                    else
767:                        return DateFormat.FULL;
768:                }
769:            }
770:
771:            /**
772:             * Inner class that extends OkJPanel so that we can call the ok()
773:             * method to save the data when the user is happy with it.
774:             */
775:            private static class TimestampOkJPanel extends OkJPanel {
776:                private static final long serialVersionUID = 2391094010453874795L;
777:
778:                Timestamp ts = new Timestamp(new java.util.Date().getTime());
779:                /*
780:                 * GUI components - need to be here because they need to be
781:                 * accessible from the event handlers to alter each other's state.
782:                 */
783:                // check box for whether to use Java Default or a Locale-dependent format
784:                private JCheckBox useJavaDefaultFormatChk = new JCheckBox(
785:                // i18n[dateTypeTimestamp.defaultFormat=Use default format ]
786:                        s_stringMgr
787:                                .getString("dateTypeTimestamp.defaultFormat")
788:                                + "(" + ts + ")");
789:
790:                // label for the date format combo, used to enable/disable text
791:                // i18n[dateTypeTimestamp.orLocaleDependend= or locale-dependent format:]
792:                private RightLabel dateFormatTypeDropLabel = new RightLabel(
793:                        s_stringMgr
794:                                .getString("dateTypeTimestamp.orLocaleDependend"));
795:
796:                // Combo box for read-all/read-part of blob
797:                private DateFormatTypeCombo dateFormatTypeDrop = new DateFormatTypeCombo();
798:
799:                // checkbox for whether to interpret input leniently or not
800:                // i18n[dateTypeTimestamp.allowInexact=allow inexact format on input]
801:                private JCheckBox lenientChk = new JCheckBox(s_stringMgr
802:                        .getString("dateTypeTimestamp.allowInexact"));
803:
804:                // Objects needed to handle radio buttons
805:                private JRadioButton doNotUseButton =
806:                // i18n[dateTypeTimestamp.timestampInWhere=Do not use Timestamp in WHERE clause]
807:                new JRadioButton(s_stringMgr
808:                        .getString("dateTypeTimestamp.timestampInWhere"));
809:
810:                // i18n[dateTypeTimestamp.jdbcEscape=Use JDBC standard escape format ]
811:                String jdbcEscapeMsg = s_stringMgr
812:                        .getString("dateTypeTimestamp.jdbcEscape");
813:
814:                private JRadioButton useTimestampFormatButton = new JRadioButton(
815:                        jdbcEscapeMsg + "( \"{ts '" + ts + "'}\")");
816:
817:                // i18n[dateTypeTimestamp.stringVersion=Use String version of Timestamp ]
818:                String stringVersionMsg = s_stringMgr
819:                        .getString("dateTypeTimestamp.stringVersion");
820:
821:                private JRadioButton useStringFormatButton = new JRadioButton(
822:                        stringVersionMsg + "('" + ts + "')");
823:
824:                // IMPORTANT: put the buttons into the array in same order as their
825:                // associated values defined for whereClauseUsage.
826:
827:                transient private ButtonModel radioButtonModels[] = {
828:                        doNotUseButton.getModel(),
829:                        useTimestampFormatButton.getModel(),
830:                        useStringFormatButton.getModel() };
831:                private ButtonGroup whereClauseUsageGroup = new ButtonGroup();
832:
833:                public TimestampOkJPanel() {
834:
835:                    /* set up the controls */
836:                    // checkbox for Java default/non-default format
837:                    useJavaDefaultFormatChk.setSelected(useJavaDefaultFormat);
838:                    useJavaDefaultFormatChk
839:                            .addChangeListener(new ChangeListener() {
840:                                public void stateChanged(ChangeEvent e) {
841:                                    dateFormatTypeDrop
842:                                            .setEnabled(!useJavaDefaultFormatChk
843:                                                    .isSelected());
844:                                    dateFormatTypeDropLabel
845:                                            .setEnabled(!useJavaDefaultFormatChk
846:                                                    .isSelected());
847:                                    lenientChk
848:                                            .setEnabled(!useJavaDefaultFormatChk
849:                                                    .isSelected());
850:                                }
851:                            });
852:
853:                    // Combo box for read-all/read-part of blob
854:                    dateFormatTypeDrop = new DateFormatTypeCombo();
855:                    dateFormatTypeDrop.setSelectedIndex(localeFormat);
856:
857:                    // lenient checkbox
858:                    lenientChk.setSelected(lenient);
859:
860:                    // where clause usage group
861:                    whereClauseUsageGroup.add(doNotUseButton);
862:                    whereClauseUsageGroup.add(useTimestampFormatButton);
863:                    whereClauseUsageGroup.add(useStringFormatButton);
864:                    whereClauseUsageGroup.setSelected(
865:                            radioButtonModels[whereClauseUsage], true);
866:
867:                    // handle cross-connection between fields
868:                    dateFormatTypeDrop.setEnabled(!useJavaDefaultFormatChk
869:                            .isSelected());
870:                    dateFormatTypeDropLabel.setEnabled(!useJavaDefaultFormatChk
871:                            .isSelected());
872:                    lenientChk
873:                            .setEnabled(!useJavaDefaultFormatChk.isSelected());
874:
875:                    /*
876:                     * Create the panel and add the GUI items to it
877:                     */
878:
879:                    setLayout(new GridBagLayout());
880:
881:                    // i18n[dateTypeTimestamp.typeTimestamp=Timestamp   (SQL type 93)]
882:                    setBorder(BorderFactory.createTitledBorder(s_stringMgr
883:                            .getString("dateTypeTimestamp.typeTimestamp")));
884:                    final GridBagConstraints gbc = new GridBagConstraints();
885:                    gbc.fill = GridBagConstraints.HORIZONTAL;
886:                    gbc.insets = new Insets(4, 4, 4, 4);
887:                    gbc.anchor = GridBagConstraints.WEST;
888:
889:                    gbc.gridx = 0;
890:                    gbc.gridy = 0;
891:
892:                    gbc.gridwidth = GridBagConstraints.REMAINDER;
893:                    add(useJavaDefaultFormatChk, gbc);
894:
895:                    gbc.gridwidth = 1;
896:                    gbc.gridx = 0;
897:                    ++gbc.gridy;
898:                    add(dateFormatTypeDropLabel, gbc);
899:
900:                    ++gbc.gridx;
901:                    add(dateFormatTypeDrop, gbc);
902:
903:                    gbc.gridx = 0;
904:                    ++gbc.gridy;
905:                    add(lenientChk, gbc);
906:
907:                    // add label for the radio button group
908:                    gbc.gridx = 0;
909:                    ++gbc.gridy;
910:                    gbc.gridwidth = GridBagConstraints.REMAINDER;
911:
912:                    // i18n[dateTypeTimestamp.generateWhereClause=For internally generated WHERE clauses:]
913:                    add(
914:                            new JLabel(
915:                                    s_stringMgr
916:                                            .getString("dateTypeTimestamp.generateWhereClause")),
917:                            gbc);
918:
919:                    ++gbc.gridy;
920:                    gbc.insets = new Insets(0, 30, 0, 0);
921:                    gbc.gridwidth = GridBagConstraints.REMAINDER;
922:                    add(doNotUseButton, gbc);
923:                    ++gbc.gridy;
924:                    add(useTimestampFormatButton, gbc);
925:                    ++gbc.gridy;
926:                    add(useStringFormatButton, gbc);
927:
928:                } // end of constructor for inner class
929:
930:                /**
931:                 * User has clicked OK in the surrounding JPanel,
932:                 * so save the current state of all variables
933:                 */
934:                public void ok() {
935:                    // get the values from the controls and set them in the static properties
936:                    useJavaDefaultFormat = useJavaDefaultFormatChk.isSelected();
937:                    DTProperties.put(this ClassName, "useJavaDefaultFormat",
938:                            Boolean.valueOf(useJavaDefaultFormat).toString());
939:
940:                    localeFormat = dateFormatTypeDrop.getValue();
941:                    dateFormat = new ThreadSafeDateFormat(localeFormat,
942:                            localeFormat); // lenient is set next
943:                    DTProperties.put(this ClassName, "localeFormat", Integer
944:                            .toString(localeFormat));
945:
946:                    lenient = lenientChk.isSelected();
947:                    dateFormat.setLenient(lenient);
948:                    DTProperties.put(this ClassName, "lenient", Boolean.valueOf(
949:                            lenient).toString());
950:
951:                    //WARNING: this depends on entries in ButtonGroup being in the same order
952:                    // as the values for whereClauseUsage
953:                    int buttonIndex;
954:                    for (buttonIndex = 0; buttonIndex < radioButtonModels.length; buttonIndex++) {
955:                        if (whereClauseUsageGroup
956:                                .isSelected(radioButtonModels[buttonIndex]))
957:                            break;
958:                    }
959:                    if (buttonIndex > radioButtonModels.length)
960:                        buttonIndex = USE_JDBC_ESCAPE_FORMAT;
961:                    whereClauseUsage = buttonIndex;
962:                    DTProperties.put(this ClassName, "whereClauseUsage", Integer
963:                            .toString(whereClauseUsage));
964:                }
965:
966:            } // end of inner class
967:
968:        }
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