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1
8 package org.jboss.cache;
9
10
11 import org.apache.commons.logging.Log;
12 import org.apache.commons.logging.LogFactory;
13 import org.jboss.cache.config.Configuration;
14 import org.jgroups.View;
15
16 import javax.management.MBeanServer  ;
17 import javax.management.MBeanServerFactory ;
18 import javax.management.ObjectName ;
19 import javax.swing.*;
20 import javax.swing.event.TableModelEvent ;
21 import javax.swing.event.TableModelListener ;
22 import javax.swing.event.TreeSelectionEvent ;
23 import javax.swing.event.TreeSelectionListener ;
24 import javax.swing.table.DefaultTableModel ;
25 import javax.swing.table.TableColumn ;
26 import javax.swing.tree.DefaultMutableTreeNode ;
27 import javax.swing.tree.DefaultTreeModel ;
28 import javax.swing.tree.TreeNode ;
29 import javax.swing.tree.TreePath ;
30 import javax.swing.tree.TreeSelectionModel ;
31 import java.awt.*;
32 import java.awt.event.ActionEvent ;
33 import java.awt.event.MouseAdapter ;
34 import java.awt.event.MouseEvent ;
35 import java.awt.event.MouseListener ;
36 import java.awt.event.WindowEvent ;
37 import java.awt.event.WindowListener ;
38 import java.io.File ;
39 import java.util.ArrayList ;
40 import java.util.HashMap ;
41 import java.util.Iterator ;
42 import java.util.List ;
43 import java.util.Map ;
44 import java.util.Set ;
45 import java.util.Vector ;
46
47
48
59 public class TreeCacheView implements TreeCacheViewMBean
60 {
61
64 ObjectName cache_service = null;
65 TreeCacheGui gui = null;
66 CacheSPI cache;
67 Log log = LogFactory.getLog(TreeCacheView.class);
68
69
70 public TreeCacheView() throws Exception
71 {
72 super();
73 init(null);
74 }
75
76 public TreeCacheView(String cache_service) throws Exception
77 {
78 init(cache_service);
79 }
80
81
82 public void create()
83 {
84 }
85
86 public void start() throws Exception
87 {
88 if (gui == null)
89 {
90 log.info("start(): creating the GUI");
91 gui = new TreeCacheGui(cache);
92 }
93 }
94
95 public void stop()
96 {
97 if (gui != null)
98 {
99 log.info("stop(): disposing the GUI");
100 gui.dispose();
101 gui = null;
102 }
103 }
104
105
107 public void destroy()
108 {
109 }
110
111 public String getCacheService()
112 {
113 return cache_service != null ? cache_service.toString() : null;
114 }
115
116
120 public void setCacheService(String cache_service) throws Exception
121 {
122 init(cache_service);
123 }
124
125
126 void init(String cache_service) throws Exception
127 {
128 MBeanServer srv = null;
129
130 if (cache_service != null)
131 this.cache_service = new ObjectName (cache_service);
132 else
133 return;
134
135 List servers = MBeanServerFactory.findMBeanServer(null);
137 if (servers == null || servers.size() == 0)
138 throw new Exception ("TreeCacheView.init(): no MBeanServers found");
139 srv = (MBeanServer ) servers.get(0);
140 log.info("init(): found MBeanServer " + srv);
141 cache = (CacheSPI) srv.getAttribute(this.cache_service, "Cache");
142 System.out.println("Cache " + cache);
143 TreeCacheGui gui = new TreeCacheGui(cache);
144 }
145
146
147 void populateTree(String dir) throws Exception
148 {
149 File file = new File (dir);
150
151 if (!file.exists()) return;
152
153 put(Fqn.fromString(dir), null);
154
155 if (file.isDirectory())
156 {
157 String [] children = file.list();
158 if (children != null && children.length > 0)
159 {
160 for (int i = 0; i < children.length; i++)
161 populateTree(dir + "/" + children[i]);
162 }
163 }
164 }
165
166 void put(Fqn fqn, Map m)
167 {
168 try
169 {
170 cache.put(fqn, m);
171 }
172 catch (Throwable t)
173 {
174 log.error("TreeCacheView.put(): " + t);
175 }
176 }
177
178
179 public static void main(String args[])
180 {
181 CacheImpl cache = null;
182 TreeCacheView demo;
183 String start_directory = null;
184 String mbean_name = "jboss.cache:service=CacheImpl";
185 String props = getDefaultProps();
186 MBeanServer srv;
187 Log log;
188 boolean use_queue = false;
189 int queue_interval = 5000;
190 int queue_max_elements = 100;
191
192
193 for (int i = 0; i < args.length; i++)
194 {
195 if (args[i].equals("-mbean_name"))
196 {
197 mbean_name = args[++i];
198 continue;
199 }
200 if (args[i].equals("-props"))
201 {
202 props = args[++i];
203 continue;
204 }
205 if (args[i].equals("-start_directory"))
206 {
207 start_directory = args[++i];
208 continue;
209 }
210 if (args[i].equals("-use_queue"))
211 {
212 use_queue = true;
213 continue;
214 }
215 if (args[i].equals("-queue_interval"))
216 {
217 queue_interval = Integer.parseInt(args[++i]);
218 use_queue = true;
219 continue;
220 }
221 if (args[i].equals("-queue_max_elements"))
222 {
223 queue_max_elements = Integer.parseInt(args[++i]);
224 use_queue = true;
225 continue;
226 }
227 help();
228 return;
229 }
230
231 try
232 {
233 log = LogFactory.getLog(CacheImpl.class);
234 srv = MBeanServerFactory.createMBeanServer();
235
236
241
242 cache = new CacheImpl();
243 Configuration c = new Configuration();
244 c.setClusterName("TreeCacheGroup");
245 c.setClusterConfig(props);
246 c.setInitialStateRetrievalTimeout(10000);
247 c.setCacheMode("REPL_ASYNC");
248
249 if (use_queue)
250 {
251 c.setUseReplQueue(true);
252 c.setReplQueueInterval(queue_interval);
253 c.setReplQueueMaxElements(queue_max_elements);
254 }
255
256 cache.getNotifier().addCacheListener(new MyListener());
257
258 log.info("registering the cache as " + mbean_name);
259 srv.registerMBean(cache.getCacheMBeanInterface(), new ObjectName (mbean_name));
260
261 cache.start();
262
263 Runtime.getRuntime().addShutdownHook(new ShutdownThread(cache));
264
265
272 demo = new TreeCacheView(mbean_name);
273 demo.create();
274 demo.start();
275 if (start_directory != null && start_directory.length() > 0)
276 {
277 demo.populateTree(start_directory);
278 }
279 }
280 catch (Exception ex)
281 {
282 ex.printStackTrace();
283 }
284 }
285
286 static class ShutdownThread extends Thread
287 {
288 CacheImpl cache = null;
289
290 ShutdownThread(CacheImpl cache)
291 {
292 this.cache = cache;
293 }
294
295 public void run()
296 {
297 cache.stop();
298 }
299 }
300
301 private static String getDefaultProps()
302 {
303 return
304 "UDP(ip_mcast=true;ip_ttl=64;loopback=false;mcast_addr=228.1.2.3;" +
305 "mcast_port=45566;mcast_recv_buf_size=80000;mcast_send_buf_size=150000;" +
306 "ucast_recv_buf_size=80000;ucast_send_buf_size=150000):" +
307 "PING(down_thread=true;num_initial_members=3;timeout=2000;up_thread=true):" +
308 "MERGE2(max_interval=20000;min_interval=10000):" +
309 "FD(down_thread=true;shun=true;up_thread=true):" +
310 "VERIFY_SUSPECT(down_thread=true;timeout=1500;up_thread=true):" +
311 "pbcast.NAKACK(down_thread=true;gc_lag=50;retransmit_timeout=600,1200,2400,4800;" +
312 "up_thread=true):" +
313 "pbcast.STABLE(desired_avg_gossip=20000;down_thread=true;up_thread=true):" +
314 "UNICAST(down_thread=true;min_threshold=10;timeout=600,1200,2400;window_size=100):" +
315 "FRAG(down_thread=true;frag_size=8192;up_thread=true):" +
316 "pbcast.GMS(join_retry_timeout=2000;join_timeout=5000;print_local_addr=true;shun=true):" +
317 "pbcast.STATE_TRANSFER(down_thread=true;up_thread=true)";
318 }
319
320
321 static void help()
322 {
323 System.out.println("TreeCacheView [-help] " +
324 "[-mbean_name <name of CacheImpl MBean>] " +
325 "[-start_directory <dirname>] [-props <props>] " +
326 "[-use_queue <true/false>] [-queue_interval <ms>] " +
327 "[-queue_max_elements <num>]");
328 }
329
330
331 public static class MyListener extends AbstractCacheListener
332 {
333 }
334
335
336 }
337
338
339 class TreeCacheGui extends JFrame implements WindowListener , CacheListener,
340 TreeSelectionListener , TableModelListener
341 {
342 private static final long serialVersionUID = 8576324868563647538L;
343 CacheSPI cache;
344 DefaultTreeModel tree_model = null;
345 Log log = LogFactory.getLog(getClass());
346 JTree jtree = null;
347 DefaultTableModel table_model = new DefaultTableModel ();
348 JTable table = new JTable(table_model);
349 MyNode root = new MyNode(SEP.getLastElementAsString());
350 Fqn selected_node = null;
351 JPanel tablePanel = null;
352 JMenu operationsMenu = null;
353 JPopupMenu operationsPopup = null;
354 JMenuBar menubar = null;
355 static final Fqn SEP = Fqn.ROOT;
356 private static final int KEY_COL_WIDTH = 20;
357 private static final int VAL_COL_WIDTH = 300;
358
359
360 public TreeCacheGui(CacheSPI cache) throws Exception
361 {
362 this.cache = cache;
363
364 cache.getNotifier().addCacheListener(this);
368 addNotify();
369 setTitle("TreeCacheGui: mbr=" + getLocalAddress());
370
371 tree_model = new DefaultTreeModel (root);
372 jtree = new JTree(tree_model);
373 jtree.setDoubleBuffered(true);
374 jtree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
375
376 JScrollPane scroll_pane = new JScrollPane(jtree);
377
378 populateTree();
379
380 getContentPane().add(scroll_pane, BorderLayout.CENTER);
381 addWindowListener(this);
382
383 table_model.setColumnIdentifiers(new String []{"Name", "Value"});
384 table_model.addTableModelListener(this);
385
386 setTableColumnWidths();
387
388 tablePanel = new JPanel();
389 tablePanel.setLayout(new BorderLayout());
390 tablePanel.add(table.getTableHeader(), BorderLayout.NORTH);
391 tablePanel.add(table, BorderLayout.CENTER);
392
393 getContentPane().add(tablePanel, BorderLayout.SOUTH);
394
395 jtree.addTreeSelectionListener(this);
397 MouseListener ml = new MouseAdapter ()
398 {
399 public void mouseClicked(MouseEvent e)
400 {
401 int selRow = jtree.getRowForLocation(e.getX(), e.getY());
402 TreePath selPath = jtree.getPathForLocation(e.getX(), e.getY());
403 if (selRow != -1)
404 {
405 selected_node = makeFQN(selPath.getPath());
406 jtree.setSelectionPath(selPath);
407
408 if (e.getModifiers() == java.awt.event.InputEvent.BUTTON3_MASK)
409 {
410 operationsPopup.show(e.getComponent(),
411 e.getX(), e.getY());
412 }
413 }
414 }
415 };
416
417 jtree.addMouseListener(ml);
418
419 createMenus();
420 setLocation(50, 50);
421 setSize(getInsets().left + getInsets().right + 485,
422 getInsets().top + getInsets().bottom + 367);
423
424 init();
425 setVisible(true);
426 }
427
428 void setSystemExit(boolean flag)
429 {
430 }
431
432 public void windowClosed(WindowEvent event)
433 {
434 }
435
436 public void windowDeiconified(WindowEvent event)
437 {
438 }
439
440 public void windowIconified(WindowEvent event)
441 {
442 }
443
444 public void windowActivated(WindowEvent event)
445 {
446 }
447
448 public void windowDeactivated(WindowEvent event)
449 {
450 }
451
452 public void windowOpened(WindowEvent event)
453 {
454 }
455
456 public void windowClosing(WindowEvent event)
457 {
458 dispose();
459 }
460
461
462 public void tableChanged(TableModelEvent evt)
463 {
464 int row, col;
465 String key, val;
466
467 if (evt.getType() == TableModelEvent.UPDATE)
468 {
469 row = evt.getFirstRow();
470 col = evt.getColumn();
471 if (col == 0)
472 { key = (String ) table_model.getValueAt(row, col);
474 val = (String ) table_model.getValueAt(row, col + 1);
475 if (key != null && val != null)
476 {
477
479 try
484 {
485 cache.put(selected_node, key, val);
486 }
487 catch (Exception e)
488 {
489 e.printStackTrace();
490 }
491
492 }
493 }
494 else
495 { key = (String ) table_model.getValueAt(row, col - 1);
497 val = (String ) table.getValueAt(row, col);
498 if (key != null && val != null)
499 {
500 cache.put(selected_node, key, val);
501 }
502 }
503 }
504 }
505
506
507 public void valueChanged(TreeSelectionEvent evt)
508 {
509 TreePath path = evt.getPath();
510 Fqn fqn = SEP;
511 Object component_name;
512 Map data = null;
513
514 for (int i = 0; i < path.getPathCount(); i++)
515 {
516 component_name = ((MyNode) path.getPathComponent(i)).name;
517 if (component_name.equals("/"))
518 continue;
519 fqn = new Fqn(fqn, component_name);
520 }
521 data = getData(fqn);
522 if (data != null)
523 {
524 getContentPane().add(tablePanel, BorderLayout.SOUTH);
525 populateTable(data);
526 validate();
527 }
528 else
529 {
530 clearTable();
531 getContentPane().remove(tablePanel);
532 validate();
533 }
534 }
535
536
537
538 public void nodeCreated(Fqn fqn, boolean pre, boolean isLocal)
539 {
540 if (!pre)
541 {
542 MyNode n, p;
543
544 n = root.add(fqn);
545 if (n != null)
546 {
547 p = (MyNode) n.getParent();
548 tree_model.reload(p);
549 jtree.scrollPathToVisible(new TreePath (n.getPath()));
550 }
551 }
552 }
553
554 public void nodeRemoved(Fqn fqn, boolean pre, boolean isLocal, Map data)
555 {
556 if (!pre)
557 {
558 MyNode n;
559 TreeNode par;
560
561 n = root.findNode(fqn);
562 if (n != null)
563 {
564 n.removeAllChildren();
565 par = n.getParent();
566 n.removeFromParent();
567 tree_model.reload(par);
568 }
569 }
570 }
571
572 public void nodeVisited(Fqn fqn, boolean pre)
573 {
574 }
575
576 public void nodeLoaded(Fqn fqn, boolean pre, Map data)
577 {
578 nodeCreated(fqn, pre, false);
579 }
580
581 public void nodeMoved(Fqn from, Fqn to, boolean pre, boolean isLocal)
582 {
583 }
584
585 public void nodeActivated(Fqn fqn, boolean pre)
586 {
587 }
588
589 public void nodePassivated(Fqn fqn, boolean pre)
590 {
591 }
592
593 public void nodeEvicted(Fqn fqn, boolean pre, boolean isLocal)
594 {
595 nodeRemoved(fqn, pre, isLocal, null);
596 }
597
598 public void nodeModified(Fqn fqn, boolean pre, boolean isLocal, ModificationType modType, Map data)
599 {
600
606 }
607
608 public void nodeVisited(Fqn fqn, boolean pre, boolean isLocal)
609 {
610 }
611
612 public void cacheStarted(CacheSPI cache)
613 {
614 }
615
616 public void cacheStopped(CacheSPI cache)
617 {
618 }
619
620 public void viewChange(final View new_view)
621 {
622 new Thread ()
623 {
624 public void run()
625 {
626 Vector mbrship;
627 if (new_view != null && (mbrship = new_view.getMembers()) != null)
628 {
629 put(SEP, "members", mbrship);
630 put(SEP, "coordinator", mbrship.firstElement());
631 }
632 }
633 }.start();
634 }
635
636
637
638
639
640 public void run()
641 {
642
643 }
644
645
646
647
650 void init()
651 {
652 Vector mbrship = null;
653
654 addGuiNode(SEP);
655
656 mbrship = getMembers() != null ? (Vector ) getMembers().clone() : null;
657 if (mbrship != null && mbrship.size() > 0)
658 {
659 put(SEP, "members", mbrship);
660 put(SEP, "coordinator", mbrship.firstElement());
661 }
662 }
663
664
665
668 private void populateTree()
669 {
670 addGuiNode(SEP);
671 }
672
673
674
677 void addGuiNode(Fqn fqn)
678 {
679 Set children;
680
681 if (fqn == null) return;
682
683 root.add(fqn);
685
686 children = getChildrenNames(fqn);
688 for (Object o : children)
689 {
690 addGuiNode(new Fqn(fqn, o));
691 }
692 }
693
694
695 Fqn makeFQN(Object [] opath)
696 {
697 List l = new ArrayList ();
698 for (Object o : opath)
699 {
700 MyNode node = (MyNode) o;
701 Object name = node.name;
702 if (name.equals(Fqn.SEPARATOR))
703 continue;
704 l.add(name);
705 }
706 System.out.println(" L " + l);
707 return new Fqn(l);
708 }
709
710 void clearTable()
711 {
712 int num_rows = table.getRowCount();
713
714 if (num_rows > 0)
715 {
716 for (int i = 0; i < num_rows; i++)
717 table_model.removeRow(0);
718 table_model.fireTableRowsDeleted(0, num_rows - 1);
719 repaint();
720 }
721 }
722
723
724 void populateTable(Map data)
725 {
726 String key, strval = "<null>";
727 Object val;
728 int num_rows = 0;
729 Map.Entry entry;
730
731 if (data == null) return;
732 num_rows = data.size();
733 clearTable();
734
735 if (num_rows > 0)
736 {
737 for (Iterator it = data.entrySet().iterator(); it.hasNext();)
738 {
739 entry = (Map.Entry ) it.next();
740 key = (String ) entry.getKey();
741 val = entry.getValue();
742 if (val != null) strval = val.toString();
743 table_model.addRow(new Object []{key, strval});
744 }
745 table_model.fireTableRowsInserted(0, num_rows - 1);
746 validate();
747 }
748 }
749
750 private void setTableColumnWidths()
751 {
752 table.sizeColumnsToFit(JTable.AUTO_RESIZE_NEXT_COLUMN);
753 TableColumn column = null;
754 column = table.getColumnModel().getColumn(0);
755 column.setMinWidth(KEY_COL_WIDTH);
756 column.setPreferredWidth(KEY_COL_WIDTH);
757 column = table.getColumnModel().getColumn(1);
758 column.setPreferredWidth(VAL_COL_WIDTH);
759 }
760
761 private void createMenus()
762 {
763 menubar = new JMenuBar();
764 operationsMenu = new JMenu("Operations");
765 AddNodeAction addNode = new AddNodeAction();
766 addNode.putValue(AbstractAction.NAME, "Add to this node");
767 RemoveNodeAction removeNode = new RemoveNodeAction();
768 removeNode.putValue(AbstractAction.NAME, "Remove this node");
769 AddModifyDataForNodeAction addModAction = new AddModifyDataForNodeAction();
770 addModAction.putValue(AbstractAction.NAME, "Add/Modify data");
771 PrintLockInfoAction print_locks = new PrintLockInfoAction();
772 print_locks.putValue(AbstractAction.NAME, "Print lock information (stdout)");
773 ReleaseAllLocksAction release_locks = new ReleaseAllLocksAction();
774 release_locks.putValue(AbstractAction.NAME, "Release all locks");
775 ExitAction exitAction = new ExitAction();
776 exitAction.putValue(AbstractAction.NAME, "Exit");
777 operationsMenu.add(addNode);
778 operationsMenu.add(removeNode);
779 operationsMenu.add(addModAction);
780 operationsMenu.add(print_locks);
781 operationsMenu.add(release_locks);
782 operationsMenu.add(exitAction);
783 menubar.add(operationsMenu);
784 setJMenuBar(menubar);
785
786 operationsPopup = new JPopupMenu();
787 operationsPopup.add(addNode);
788 operationsPopup.add(removeNode);
789 operationsPopup.add(addModAction);
790 }
791
792 Object getLocalAddress()
793 {
794 try
795 {
796 return cache.getLocalAddress();
797 }
798 catch (Throwable t)
799 {
800 log.error("TreeCacheGui.getLocalAddress(): " + t);
801 return null;
802 }
803 }
804
805 Map getData(Fqn fqn)
806 {
807 Node n = cache.getRoot().getChild(fqn);
808 if (n == null)
809 {
810 return null;
811 }
812 return n.getData();
813 }
814
815
816 void put(Fqn fqn, Map m)
817 {
818 try
819 {
820 cache.put(fqn, m);
821 }
822 catch (Throwable t)
823 {
824 log.error("TreeCacheGui.put(): " + t);
825 }
826 }
827
828
829 void put(Fqn fqn, String key, Object value)
830 {
831 try
832 {
833 cache.put(fqn, key, value);
834 }
835 catch (Throwable t)
836 {
837 log.error("TreeCacheGui.put(): " + t);
838 }
839 }
840
841 Set getKeys(Fqn fqn)
842 {
843 try
844 {
845 return cache.getRoot().getChild(fqn).getKeys();
846 }
847 catch (Throwable t)
848 {
849 log.error("TreeCacheGui.getKeys(): " + t);
850 return null;
851 }
852 }
853
854 Object get(Fqn fqn, String key)
855 {
856 try
857 {
858 return cache.getRoot().getChild(fqn).getData().get(key);
859 }
860 catch (Throwable t)
861 {
862 log.error("TreeCacheGui.get(): " + t);
863 return null;
864 }
865 }
866
867 Set getChildrenNames(Fqn fqn)
868 {
869 try
870 {
871 Node n = cache.getRoot().getChild(fqn);
872 return n.getChildrenNames();
873 }
874 catch (Throwable t)
875 {
876 log.error("TreeCacheGui.getChildrenNames(): " + t);
877 return null;
878 }
879 }
880
881 Vector getMembers()
882 {
883 try
884 {
885 return new Vector ();
886 }
888 catch (Throwable t)
889 {
890 log.error("TreeCacheGui.getMembers(): " + t);
891 return null;
892 }
893 }
894
895
896
897
898
899 class ExitAction extends AbstractAction
900 {
901 private static final long serialVersionUID = 8895044368299888998L;
902
903 public void actionPerformed(ActionEvent e)
904 {
905 dispose();
906 }
907 }
908
909 class AddNodeAction extends AbstractAction
910 {
911 private static final long serialVersionUID = 5568518714172267901L;
912
913 public void actionPerformed(ActionEvent e)
914 {
915 JTextField fqnTextField = new JTextField();
916 if (selected_node != null)
917 fqnTextField.setText(selected_node.toString());
918 Object [] information = {"Enter fully qualified name",
919 fqnTextField};
920 final String btnString1 = "OK";
921 final String btnString2 = "Cancel";
922 Object [] options = {btnString1, btnString2};
923 int userChoice = JOptionPane.showOptionDialog(null,
924 information,
925 "Add DataNode",
926 JOptionPane.YES_NO_OPTION,
927 JOptionPane.PLAIN_MESSAGE,
928 null,
929 options,
930 options[0]);
931 if (userChoice == 0)
932 {
933 String userInput = fqnTextField.getText();
934 put(Fqn.fromString(userInput), null);
935 }
936 }
937 }
938
939
940 class PrintLockInfoAction extends AbstractAction
941 {
942 private static final long serialVersionUID = 5577441016277949170L;
943
944 public void actionPerformed(ActionEvent e)
945 {
946 System.out.println("\n*** lock information ****\n" + cache.getLockTable());
947 }
948 }
949
950 class ReleaseAllLocksAction extends AbstractAction
951 {
952 private static final long serialVersionUID = 3796901116451916116L;
953
954 public void actionPerformed(ActionEvent e)
955 {
956 System.out.println("TODO :-)");
957 }
958 }
959
960 class RemoveNodeAction extends AbstractAction
961 {
962 private static final long serialVersionUID = 8985697625953238855L;
963
964 public void actionPerformed(ActionEvent e)
965 {
966 try
967 {
968 cache.getRoot().removeChild(selected_node);
969 }
970 catch (Throwable t)
971 {
972 log.error("RemoveNodeAction.actionPerformed(): " + t);
973 }
974 }
975 }
976
977 class AddModifyDataForNodeAction extends AbstractAction
978 {
979 private static final long serialVersionUID = 3593129982953807846L;
980
981 public void actionPerformed(ActionEvent e)
982 {
983 Map data = getData(selected_node);
984 if (data != null)
985 {
986 }
987 else
988 {
989 clearTable();
990 data = new HashMap ();
991 data.put("Add Key", "Add Value");
992
993 }
994 populateTable(data);
995 getContentPane().add(tablePanel, BorderLayout.SOUTH);
996 validate();
997
998 }
999 }
1000
1001
1002 class MyNode extends DefaultMutableTreeNode
1003 {
1004 private static final long serialVersionUID = 1578599138419577069L;
1005 Object name = "<unnamed>";
1006
1007
1008 MyNode(Object name)
1009 {
1010 this.name = name;
1011 }
1012
1013
1014
1018 public MyNode add(Fqn fqn)
1019 {
1020 MyNode curr, n, ret = null;
1021
1022 if (fqn == null) return null;
1023 curr = this;
1024 for (Object o : fqn.peekElements())
1025 {
1026 n = curr.findChild(o);
1027 if (n == null)
1028 {
1029 n = new MyNode(o.toString());
1030 if (ret == null) ret = n;
1031 curr.add(n);
1032 }
1033 curr = n;
1034 }
1035 return ret;
1036 }
1037
1038
1039
1042 public void remove(String fqn)
1043 {
1044 removeFromParent();
1045 }
1046
1047
1048 MyNode findNode(Fqn fqn)
1049 {
1050 MyNode curr, n;
1051
1052 if (fqn == null) return null;
1053 curr = this;
1054 for (Object o : fqn.peekElements())
1055 {
1056 n = curr.findChild(o);
1057 if (n == null)
1058 return null;
1059 curr = n;
1060 }
1061 return curr;
1062 }
1063
1064
1065 MyNode findChild(Object relative_name)
1066 {
1067 MyNode child;
1068
1069 if (relative_name == null || getChildCount() == 0)
1070 return null;
1071 for (int i = 0; i < getChildCount(); i++)
1072 {
1073 child = (MyNode) getChildAt(i);
1074 if (child.name == null)
1075 {
1076 continue;
1077 }
1078
1079 if (child.name.equals(relative_name))
1080 return child;
1081 }
1082 return null;
1083 }
1084
1085
1086 String print(int indent)
1087 {
1088 StringBuffer sb = new StringBuffer ();
1089
1090 for (int i = 0; i < indent; i++)
1091 sb.append(" ");
1092 if (!isRoot())
1093 {
1094 if (name == null)
1095 sb.append("/<unnamed>");
1096 else
1097 {
1098 sb.append(TreeCacheGui.SEP.toString() + name);
1099 }
1100 }
1101 sb.append("\n");
1102 if (getChildCount() > 0)
1103 {
1104 if (isRoot())
1105 indent = 0;
1106 else
1107 indent += 4;
1108 for (int i = 0; i < getChildCount(); i++)
1109 sb.append(((MyNode) getChildAt(i)).print(indent));
1110 }
1111 return sb.toString();
1112 }
1113
1114
1115 public String toString()
1116 {
1117 return name.toString();
1118 }
1119
1120 }
1121
1122
1123}
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
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Java API By Example, From Geeks To Geeks.