JAVA Sort Problem
PLEASE HELP_
I have a massive problem, I am trying to sort ASCII Characters in Ascending and Descending order however I have no clue on how to do this.
I am desperate to get this done as deadlines are looming and would appreciate any help at all!!
Many Thanks
Nicholas
[email protected]
nickh27 wrote:
PLEASE HELP_
I have a massive problem, I am trying to sort ASCII Characters in Ascending and Descending order however I have no clue on how to do this.
I am desperate to get this done as deadlines are looming and would appreciate any help at all!!
Many Thanks
Nicholas
[email protected]
Your sorting an array of chars ? An array of String ? An ArrayList with chars/Strings ? Could you be more specific ?
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(2) Traveler
(3)TableSorter
//TableSorterDemo:
package sorter;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
* TableSorterDemo is like TableDemo, except that it
* inserts a custom model -- a sorter -- between the table
* and its data model. It also has column tool tips.
public class TableSorterDemo implements ActionListener
private JPanel superPanel;
private JButton clickMe = new JButton("click me to get diff data");
private boolean DEBUG = false;
private DefaultListModel defaultListModel;
private JTable table;
public TableSorterDemo()
superPanel = new JPanel(new BorderLayout());
defaultListModel = new DefaultListModel();
init1();
TableSorter sorter = new TableSorter(new MyTableModel(defaultListModel)); //ADDED THIS
table = new JTable(sorter); //NEW
sorter.setTableHeader(table.getTableHeader()); //ADDED THIS
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
//Set up tool tips for column headers.
table.getTableHeader().setToolTipText(
"Click to specify sorting; Control-Click to specify secondary sorting");
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this panel.
superPanel.add("Center", scrollPane);
superPanel.add("South",clickMe);
clickMe.addActionListener(this);
public JPanel getPanel()
return superPanel;
public void init1()
//in real life this will be done from the db
Traveler a = new Traveler();
Traveler b = new Traveler();
Traveler c = new Traveler();
a.setFirstName("Elvis");
a.setLastName("Presley");
a.setSprot("Ping Pong");
a.setNumYears(3);
a.setVegetarian(true);
b.setFirstName("Elton");
b.setLastName("John");
b.setSprot("Soccer");
b.setNumYears(2);
b.setVegetarian(true);
c.setFirstName("shaquille");
c.setLastName("oneil");
c.setSprot("Golf");
c.setNumYears(22);
c.setVegetarian(true);
defaultListModel.addElement(a);
defaultListModel.addElement(b);
defaultListModel.addElement(c);
public void init2()
//in real life this will be done from the db
Traveler d = new Traveler();
Traveler e = new Traveler();
Traveler f = new Traveler();
Traveler g = new Traveler();
d.setFirstName("John");
d.setLastName("Smith");
d.setSprot("Tennis");
d.setNumYears(32);
d.setVegetarian(true);
e.setFirstName("Ron");
e.setLastName("Cohen");
e.setSprot("Baseball");
e.setNumYears(12);
e.setVegetarian(true);
f.setFirstName("Donald");
f.setLastName("Mac Novice");
f.setSprot("Vallyball");
f.setNumYears(1);
f.setVegetarian(true);
g.setFirstName("Eithan");
g.setLastName("Superstar");
g.setSprot("Vallyball");
g.setNumYears(21);
g.setVegetarian(true);
defaultListModel.addElement(d);
defaultListModel.addElement(e);
defaultListModel.addElement(f);
defaultListModel.addElement(g);
class MyTableModel extends AbstractTableModel
private DefaultListModel myModel;
public MyTableModel(DefaultListModel m)
myModel=m;
private String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
public int getColumnCount()
return columnNames.length;
public int getRowCount()
return myModel.size();
public String getColumnName(int column)
return getNames()[column];
public String[] getNames()
String[] names = {"First Name", "Last Name", "Sport", "# of Years", "Vegetarian"};
return names;
public Object getValueAt(int row, int col)
return distributeObjectsInTable(row, col, (Traveler) myModel.elementAt(row));
public Object distributeObjectsInTable(int row, int col, Traveler tr)
switch(col)
case 0:
return tr.getFirstName();
case 1:
return tr.getLastName();
case 2:
return tr.getSprot();
case 3:
return new Integer(tr.getNumYears());
case 4:
return new Boolean (tr.isVegetarian());
default:
return "Error";
public Class getColumnClass(int c)
return getValueAt(0, c).getClass();
private static void createAndShowGUI()
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
JFrame frame = new JFrame("TableSorterDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
TableSorterDemo newContentPane = new TableSorterDemo();
newContentPane.getPanel().setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane.getPanel());
//Display the window.
frame.pack();
frame.setVisible(true);
public static void main(String[] args)
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable()
public void run()
createAndShowGUI();
public void actionPerformed(ActionEvent ae)
if (ae.getSource()==clickMe)
defaultListModel.removeAllElements();
init2(); //if the size of the model was less than 2 items - the result will be ok.
//in other words, if you commens the last 2 rows of this method (addElement(f) & g)
// the result will be fine.
table.updateUI();
}//(2) Traveler
package sorter;
public class Traveler
private String firstName;
private String lastName;
private String sprot;
private int numYears;
private boolean vegetarian;
public String getFirstName()
return firstName;
public String getLastName()
return lastName;
public int getNumYears()
return numYears;
public String getSprot()
return sprot;
public boolean isVegetarian()
return vegetarian;
public void setFirstName(String firstName)
this.firstName = firstName;
public void setLastName(String lastName)
this.lastName = lastName;
public void setNumYears(int numYears)
this.numYears = numYears;
public void setSprot(String sprot)
this.sprot = sprot;
public void setVegetarian(boolean vegetarian)
this.vegetarian = vegetarian;
}//(3)TableSorter
package sorter;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
import javax.swing.*;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.*;
public class TableSorter extends AbstractTableModel {
protected TableModel tableModel;
public static final int DESCENDING = -1;
public static final int NOT_SORTED = 0;
public static final int ASCENDING = 1;
private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);
public static final Comparator COMPARABLE_COMAPRATOR = new Comparator() {
public int compare(Object o1, Object o2) {
return ((Comparable) o1).compareTo(o2);
public static final Comparator LEXICAL_COMPARATOR = new Comparator() {
public int compare(Object o1, Object o2) {
return o1.toString().compareTo(o2.toString());
private Row[] viewToModel;
private int[] modelToView;
private JTableHeader tableHeader;
private MouseListener mouseListener;
private TableModelListener tableModelListener;
private Map columnComparators = new HashMap();
private List sortingColumns = new ArrayList();
public TableSorter() {
this.mouseListener = new MouseHandler();
this.tableModelListener = new TableModelHandler();
public TableSorter(TableModel tableModel) {
this();
setTableModel(tableModel);
public TableSorter(TableModel tableModel, JTableHeader tableHeader) {
this();
setTableHeader(tableHeader);
setTableModel(tableModel);
private void clearSortingState() {
viewToModel = null;
modelToView = null;
public TableModel getTableModel() {
return tableModel;
public void setTableModel(TableModel tableModel) {
if (this.tableModel != null) {
this.tableModel.removeTableModelListener(tableModelListener);
this.tableModel = tableModel;
if (this.tableModel != null) {
this.tableModel.addTableModelListener(tableModelListener);
clearSortingState();
fireTableStructureChanged();
public JTableHeader getTableHeader() {
return tableHeader;
public void setTableHeader(JTableHeader tableHeader) {
if (this.tableHeader != null) {
this.tableHeader.removeMouseListener(mouseListener);
TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
if (defaultRenderer instanceof SortableHeaderRenderer) {
this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
this.tableHeader = tableHeader;
if (this.tableHeader != null) {
this.tableHeader.addMouseListener(mouseListener);
this.tableHeader.setDefaultRenderer(
new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer()));
public boolean isSorting() {
return sortingColumns.size() != 0;
private Directive getDirective(int column) {
for (int i = 0; i < sortingColumns.size(); i++) {
Directive directive = (Directive)sortingColumns.get(i);
if (directive.column == column) {
return directive;
return EMPTY_DIRECTIVE;
public int getSortingStatus(int column) {
return getDirective(column).direction;
private void sortingStatusChanged() {
clearSortingState();
fireTableDataChanged();
if (tableHeader != null) {
tableHeader.repaint();
public void setSortingStatus(int column, int status) {
Directive directive = getDirective(column);
if (directive != EMPTY_DIRECTIVE) {
sortingColumns.remove(directive);
if (status != NOT_SORTED) {
sortingColumns.add(new Directive(column, status));
sortingStatusChanged();
protected Icon getHeaderRendererIcon(int column, int size) {
Directive directive = getDirective(column);
if (directive == EMPTY_DIRECTIVE) {
return null;
return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
private void cancelSorting() {
sortingColumns.clear();
sortingStatusChanged();
public void setColumnComparator(Class type, Comparator comparator) {
if (comparator == null) {
columnComparators.remove(type);
} else {
columnComparators.put(type, comparator);
protected Comparator getComparator(int column) {
Class columnType = tableModel.getColumnClass(column);
Comparator comparator = (Comparator) columnComparators.get(columnType);
if (comparator != null) {
return comparator;
if (Comparable.class.isAssignableFrom(columnType)) {
return COMPARABLE_COMAPRATOR;
return LEXICAL_COMPARATOR;
private Row[] getViewToModel() {
if (viewToModel == null) {
int tableModelRowCount = tableModel.getRowCount();
viewToModel = new Row[tableModelRowCount];
for (int row = 0; row < tableModelRowCount; row++) {
viewToModel[row] = new Row(row);
if (isSorting()) {
Arrays.sort(viewToModel);
return viewToModel;
public int modelIndex(int viewIndex)
return getViewToModel()[viewIndex].modelIndex;
private int[] getModelToView()
if (modelToView == null) {
int n = getViewToModel().length;
modelToView = new int[n];
for (int i = 0; i < n; i++) {
modelToView[modelIndex(i)] = i;
return modelToView;
// TableModel interface methods
public int getRowCount() {
return (tableModel == null) ? 0 : tableModel.getRowCount();
public int getColumnCount() {
return (tableModel == null) ? 0 : tableModel.getColumnCount();
public String getColumnName(int column) {
return tableModel.getColumnName(column);
public Class getColumnClass(int column) {
return tableModel.getColumnClass(column);
public boolean isCellEditable(int row, int column) {
return tableModel.isCellEditable(modelIndex(row), column);
public Object getValueAt(int row, int column) {
return tableModel.getValueAt(modelIndex(row), column);
public void setValueAt(Object aValue, int row, int column) {
tableModel.setValueAt(aValue, modelIndex(row), column);
// Helper classes
private class Row implements Comparable {
private int modelIndex;
public Row(int index) {
this.modelIndex = index;
public int compareTo(Object o) {
int row1 = modelIndex;
int row2 = ((Row) o).modelIndex;
for (Iterator it = sortingColumns.iterator(); it.hasNext();) {
Directive directive = (Directive) it.next();
int column = directive.column;
Object o1 = tableModel.getValueAt(row1, column);
Object o2 = tableModel.getValueAt(row2, column);
int comparison = 0;
// Define null less than everything, except null.
if (o1 == null && o2 == null) {
comparison = 0;
} else if (o1 == null) {
comparison = -1;
} else if (o2 == null) {
comparison = 1;
} else {
comparison = getComparator(column).compare(o1, o2);
if (comparison != 0) {
return directive.direction == DESCENDING ? -comparison : comparison;
return 0;
private class TableModelHandler implements TableModelListener {
public void tableChanged(TableModelEvent e) {
// If we're not sorting by anything, just pass the event along.
if (!isSorting()) {
clearSortingState();
fireTableChanged(e);
return;
// If the table structure has changed, cancel the sorting; the
// sorting columns may have been either moved or deleted from
// the model.
if (e.getFirstRow() == TableModelEvent.HEADER_ROW) {
cancelSorting();
fireTableChanged(e);
return;
// We can map a cell event through to the view without widening
// when the following conditions apply:
// a) all the changes are on one row (e.getFirstRow() == e.getLastRow()) and,
// b) all the changes are in one column (column != TableModelEvent.ALL_COLUMNS) and,
// c) we are not sorting on that column (getSortingStatus(column) == NOT_SORTED) and,
// d) a reverse lookup will not trigger a sort (modelToView != null)
// Note: INSERT and DELETE events fail this test as they have column == ALL_COLUMNS.
// The last check, for (modelToView != null) is to see if modelToView
// is already allocated. If we don't do this check; sorting can become
// a performance bottleneck for applications where cells
// change rapidly in different parts of the table. If cells
// change alternately in the sorting column and then outside of
// it this class can end up re-sorting on alternate cell updates -
// which can be a performance problem for large tables. The last
// clause avoids this problem.
int column = e.getColumn();
if (e.getFirstRow() == e.getLastRow()
&& column != TableModelEvent.ALL_COLUMNS
&& getSortingStatus(column) == NOT_SORTED
&& modelToView != null) {
int viewIndex = getModelToView()[e.getFirstRow()];
fireTableChanged(new TableModelEvent(TableSorter.this,
viewIndex, viewIndex,
column, e.getType()));
return;
// Something has happened to the data that may have invalidated the row order.
clearSortingState();
fireTableDataChanged();
return;
private class MouseHandler extends MouseAdapter {
public void mouseClicked(MouseEvent e) {
JTableHeader h = (JTableHeader) e.getSource();
TableColumnModel columnModel = h.getColumnModel();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
int column = columnModel.getColumn(viewColumn).getModelIndex();
if (column != -1) {
int status = getSortingStatus(column);
if (!e.isControlDown()) {
cancelSorting();
// Cycle the sorting states through {NOT_SORTED, ASCENDING, DESCENDING} or
// {NOT_SORTED, DESCENDING, ASCENDING} depending on whether shift is pressed.
status = status + (e.isShiftDown() ? -1 : 1);
status = (status + 4) % 3 - 1; // signed mod, returning {-1, 0, 1}
setSortingStatus(column, status);
private static class Arrow implements Icon {
private boolean descending;
private int size;
private int priority;
public Arrow(boolean descending, int size, int priority) {
this.descending = descending;
this.size = size;
this.priority = priority;
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Color color = c == null ? Color.GRAY : c.getBackground();
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return size;
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return size;
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private TableCellRenderer tableCellRenderer;
public SortableHeaderRenderer(TableCellRenderer tableCellRenderer) {
this.tableCellRenderer = tableCellRenderer;
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boolean isSelected,
boolean hasFocus,
int row,
int column) {
Component c = tableCellRenderer.getTableCellRendererComponent(table,
value, isSelected, hasFocus, row, column);
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l.setHorizontalTextPosition(JLabel.LEFT);
int modelColumn = table.convertColumnIndexToModel(column);
l.setIcon(getHeaderRendererIcon(modelColumn, l.getFont().getSize()));
return c;
private static class Directive {
private int column;
private int direction;
public Directive(int column, int direction) {
this.column = column;
this.direction = direction;
}The table listens to the TableModel for changes. Changing the table by adding/removing
rows or columns has no affect on its table model. If you make changes to the table model
the table will be notified by its TableModelListener and change its view. So tell
MyTableModel about the change of data:
public class TableSorterDemo implements ActionListener
MyTableModel tableModel;
public TableSorterDemo()
defaultListModel = new DefaultListModel();
init1();
tableModel = new MyTableModel(defaultListModel);
TableSorter sorter = new TableSorter(tableModel);
public void actionPerformed(ActionEvent ae)
if (ae.getSource()==clickMe)
defaultListModel.removeAllElements();
init2();
tableModel.fireTableStructureChanged();
} -
Java script problem when trying to sign in to Ovi ...
Hi Folks
I am running XP SP3, with IE7. I have had problems due to installing ie8 then removing it and going back to IE7. I have had to reset all sorts of bits. Anyway. I still can't sign in to the music store, or register my PC for comes with music. I installed a debugger to see what was going on. This is my current stage of the problem.....
When I sign in, I only get a white panel. The debugger highlights this section of the java script: __doPostBack('ctl00$C$btnEContinue','')
Can someone tell me why this fails, and how I can fix it?
many thanks.I also have the same problem. I've tried all fixes listed in other forums and nothing works. Running windows Vista 32 bit. Any working solutions yet? Tried every solution listed for the cmd prompt. Turned off antivirus and spyware. Rebooting about 100 times. Nothing works.
-
I have been trying to get a tableview to be sortable by clicking on the header of columns. I have been reviewing existing threads on the forum in particular the one below.
https://forums.sdn.sap.com/thread.jspa?threadID=16417
I seem to understand the concept but for some reason my table does not sort, it just does nothing. Could someone take a look and see if you can find any problems - I can't wait to give points.
Here is all my code.
Here is the Java....
package MSSPackage;
import MSSBeanPackage.PositionOverviewBean;
import MSSPackage.SortTableModel;
import com.sapportals.htmlb.page.DynPage;
import com.sapportals.htmlb.page.PageException;
import com.sapportals.portal.htmlb.page.JSPDynPage;
import com.sapportals.portal.htmlb.page.PageProcessorComponent;
import com.sapportals.portal.prt.component.IPortalComponentContext;
import com.sapportals.portal.prt.component.IPortalComponentProfile;
import com.sapportals.portal.prt.component.IPortalComponentRequest;
import com.sapportals.portal.prt.component.IPortalComponentSession;
import com.sapportals.htmlb.event.*;
import com.sapportals.htmlb.*;
import com.sapportals.htmlb.table.*;
import com.sapportals.htmlb.table.DefaultTableViewModel;
import javax.servlet.http.*;
// SAP RFC Imports
import com.sap.mw.jco.IFunctionTemplate;
import com.sap.mw.jco.JCO;
import com.sapportals.portal.prt.service.jco.IJCOClientPoolEntry;
import com.sapportals.portal.prt.service.jco.IJCOClientService;
import com.sapportals.portal.prt.runtime.PortalRuntime;
import java.util.*;
public class PositionOverview extends PageProcessorComponent {
public DynPage getPage(){
return new PositionOverviewDynPage();
public static class PositionOverviewDynPage extends JSPDynPage{
JCO.Repository mRepository;
public JCO.Table tblRelations;
public JCO.Table tblPositions;
public SortTableModel tableModel;
public int visibleRow = 1;
private boolean OrgUnitSelected = false;
public void doInitialization(){
IPortalComponentSession oSession = ((IPortalComponentRequest)getRequest()).getComponentSession();
PositionOverviewBean oBean = new PositionOverviewBean();
// Table Start row
oBean.setvisibleRow(new Integer(this.visibleRow).toString());
oSession.putValue("myBean", oBean);
// Define request, context and profile containers
IPortalComponentRequest request = (IPortalComponentRequest) this.getRequest();
IPortalComponentContext myContext = request.getComponentContext();
IPortalComponentProfile myProfile = myContext.getProfile();
// Define bean reference to bean
PositionOverviewBean myBean = new PositionOverviewBean();
// Table Start row
myBean.setvisibleRow(new Integer(this.visibleRow).toString());
// Place bean in user profile.
myProfile.putValue("myBean", myBean);
public void doProcessAfterInput() throws PageException {
public void doProcessBeforeOutput() throws PageException {
String NavType = "RCORGUNIT";
String OType = "O";
//String OBjid = "10004399";
String OBjid = "";
String sapSystem = "SAP_R3_HumanResources";
IPortalComponentSession oSession = ((IPortalComponentRequest)getRequest()).getComponentSession();
PositionOverviewBean myBean = (PositionOverviewBean) oSession.getValue("myBean");
// Define request, context and profile containers
IPortalComponentRequest request = (IPortalComponentRequest) this.getRequest();
/* IPortalComponentContext myContext = request.getComponentContext();
IPortalComponentProfile myProfile = myContext.getProfile();
//HttpSession session = request.getServletRequest().getSession(); //dmm
//Get Bean from Profile
PositionOverviewBean myBean = (PositionOverviewBean) myProfile.getValue("myBean");
//PositionOverviewBean myDataBean = (PositionOverviewBean) session.getValue("POviewBean"); //dmm
String ddlbSelection = "";
String ddlbValue = "";
DropdownListBox ddlbOrgUnits = (DropdownListBox) getComponentByName("ddlbOrgUnits");
if (ddlbOrgUnits != null)
ddlbSelection = ddlbOrgUnits.getSelection();
ddlbValue = ddlbOrgUnits.getValueAsDataType().getValueAsString();
OBjid = ddlbValue;
myBean.setObjId(OBjid);
else
OBjid = "";
myBean.setObjId(OBjid);
IJCOClientService clientService;
IJCOClientPoolEntry poolEntry;
JCO.Client client;
try
clientService = (IJCOClientService) PortalRuntime.getRuntimeResources().getService(IJCOClientService.KEY);
poolEntry = clientService.getJCOClientPoolEntry(sapSystem, request);
client = poolEntry.getJCOClient();
// connect to SAP system, logon
client.connect();
// Create Jco Repository Object
mRepository = new JCO.Repository("R3USERMENU", client);
// Reset function object
JCO.Function function = null;
// Run RFC Module on SAP system
function = this.createFunction("HRWPC_GET_NAV_OBJECTS");
JCO.ParameterList input = function.getImportParameterList();
input.setValue("RCORGUNIT", "NAVTYPE");
client.execute(function);
tblRelations = function.getTableParameterList().getTable("RESULT_OBJEC");
myBean.setRowcnt(tblRelations.getNumRows());
if (tblRelations.getNumRows() != 0)
myBean.setOrgUnits(tblRelations);
if (ddlbOrgUnits == null)
// check to see if there is not a position id already assigned
tblRelations.setRow(0);
OBjid = tblRelations.getString("OBJID");
myBean.setObjId(OBjid);
//myBean.sTemp = OBjid;
// GET THE POSITION DETAILS
function = null;
input = null;
function = this.createFunction("Z_GET_POSITION_OVERVIEW");
input = function.getImportParameterList();
input.setValue(NavType, "NAVTYPE");
input.setValue(OType, "OTYPE");
input.setValue(OBjid, "OBJID");
client.execute(function);
tblPositions = function.getTableParameterList().getTable("RESULT_OBJEC");
myBean.setRowcnt(tblPositions.getNumRows());
tableViewFormat();
tableModel.setTesting("Startxxxx");
myBean.settableModel(tableModel);
//tableModel.setTesting("SSSS");
//myDataBean.settableModel(tableModel); //dmm
//session.setAttribute("POviewBean", myDataBean); //dmm
oSession.putValue("myBean", myBean);
//Release pool entry
poolEntry.release();
catch(Exception ex)
//name = ex.getMessage();
//String sTest = "this is a test";
//request.getComponentSession().putValue("Test", sTest);
//myProfile.putValue("Testx", sTest);
this.setJspName("PositionOverviewJSP.jsp");
public void getPositions()
String NavType;
String Root_Ot;
String Root_ObjId;
public void tableViewFormat()
// Define the vectors used to build tableView
Vector tempRec = new Vector();
Vector dataRec = new Vector();
String sDate = "";
String sPosLink = "";
String sPosVal = "";
String sENameLink = "";
String sENameVal = "";
String sStatus = "";
// Loop at company code list and add to vectors
for (int i = 0; i < tblPositions.getNumRows(); i++)
tblPositions.setRow(i);
tempRec = new Vector();
sStatus = (String) tblPositions.getString("STATUS");
if (sStatus != null)
if (sStatus.equals("0"))
sDate = tblPositions.getString("ZHR_VACANT_BEGDA");
sDate = sDate.substring(5, 7) + "/" + sDate.substring(8, 10) + "/" + sDate.substring(0, 4);
else
sDate = "";
sPosVal = tblPositions.getString("STEXT");
sENameVal = tblPositions.getString("ENAME");
if (sPosVal.equals(""))
sPosLink = sPosVal;
else
sPosLink = "<a HREF="myLink" onclick="return EPCM.doNavigate('ROLES://portal_content/com.sap.portal.migrated/ep_5.0/pages/com.sap.pct.hcm.positionprofile?CKey=000000" + tblPositions.getString("OBJID") + "', 1)">" + tblPositions.getString("STEXT") + "</a>";
if (sENameVal.equals(""))
sENameLink = sENameVal;
else
sENameLink = "<a HREF="myLink" onclick="return EPCM.doNavigate('ROLES://portal_content/com.phi/com.phi.mgt/com.phi.mss/com.phi.hr/com.phi.pages/com.phi.mgt.mss.hr.pages.positionholder?CKey=000000" + tblPositions.getString("OBJID") + "', 1)">" + tblPositions.getString("ENAME") + "</a>";
tempRec.addElement(sStatus);
tempRec.addElement(tblPositions.getString("OBJID"));
tempRec.addElement(sPosLink);
tempRec.addElement(sENameLink);
tempRec.addElement(sDate);
dataRec.addElement(tempRec);
// Then define the technical column names
Vector colNames = new Vector();
colNames.addElement("STATUS");
colNames.addElement("OBJID");
colNames.addElement("STEXT");
colNames.addElement("ENAME");
colNames.addElement("ZHR_VACANT_BEGDA");
// Now we build the actual tableView
//tableModel = new DefaultTableViewModel(dataRec, colNames);
tableModel = new SortTableModel(dataRec, colNames, 5);
// Define tableView parameters
tableModel.setKeyColumn(2);
TableColumn column = tableModel.getColumn("STATUS");
column.setEncode(false);
column.setType(com.sapportals.htmlb.enum.TableColumnType.USER);
column.setTitle("Vacant");
column = tableModel.getColumn("OBJID");
column.setTitle("Position Number");
column = tableModel.getColumn("STEXT");
column.setTitle("Position");
column = tableModel.getColumn("ENAME");
column.setTitle("Holder of Position");
column = tableModel.getColumn("ZHR_VACANT_BEGDA");
column.setTitle("Vacant as of");
// * Navigation Button Clicked
public void myOnNavigate(Event event)
TableNavigationEvent tne = (TableNavigationEvent) event;
visibleRow = tne.getFirstVisibleRowAfter();
// Define request, context and profile containers
IPortalComponentRequest request = (IPortalComponentRequest) this.getRequest();
IPortalComponentContext myContext = request.getComponentContext();
IPortalComponentProfile myProfile = myContext.getProfile();
// Get Bean from profile
PositionOverviewBean myBean = (PositionOverviewBean) myProfile.getValue("myBean");
// Table Start row
myBean.setvisibleRow(new Integer(this.visibleRow).toString());
public void onHeaderClick(Event event)
IPortalComponentSession oSession = ((IPortalComponentRequest)getRequest()).getComponentSession();
PositionOverviewBean myBean = (PositionOverviewBean) oSession.getValue("myBean");
TableHeaderClickEvent tne = (TableHeaderClickEvent) event; // get the event
SortTableModel tblModel = myBean.gettableModel();
//tblModel.sort();
int col = 3;
tblModel.sortByColumn(col);
myBean.settableModel(tblModel);
oSession.putValue("myBean", myBean);
// Create Function object for RFC Calls
public JCO.Function createFunction(String name) throws Exception
try
IFunctionTemplate ft = mRepository.getFunctionTemplate(name.toUpperCase());
if (ft == null)
return null;
return ft.getFunction();
catch (Exception ex)
ex.printStackTrace();
throw new Exception("Problem retrieving JCO.Function object");
public void onSelectddlbOrgUnits(Event event) throws PageException
OrgUnitSelected = true;
Here is the JSP
<%@ page import="com.sap.mw.jco.*" %>
<%@ page import="com.sapportals.htmlb.enum.*" %>
<%@ page import="MSSPackage.TableViewCellRenderer" %>
<%@ page import="com.sapportals.portal.prt.component.IPortalComponentRequest" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="com.sapportals.portal.prt.component.IPortalComponentContext" %>
<%@ taglib uri="tagLib" prefix="hbj" %>
<hbj:content id="myContext" >
<hbj:page title="PageTitle">
<hbj:form id="myFormId" >
<jsp:useBean id="myBean" scope="session" class="MSSBeanPackage.PositionOverviewBean" />
<hbj:gridLayout rowSize="1" columnSize="1" cellSpacing="1">
<hbj:gridLayoutCell columnIndex="1" rowIndex="1">
<hbj:textView id="ddlbLable" text="Select organizational unit to display positions" design="STANDARD" />
</hbj:gridLayoutCell>
<hbj:gridLayoutCell columnIndex="1" rowIndex="2">
<hbj:dropdownListBox id="ddlbOrgUnits" onSelect="onSelectddlbOrgUnits" selection="<%=myBean.getObjId()%>">
<%
JCO.Table org_units = null;
org_units = myBean.getOrgUnits();
for (int i = 0; i < org_units.getNumRows(); i++)
org_units.setRow(i);
String sUnit = org_units.getString("STEXT");
String Unit_Id = org_units.getString("OBJID");
%>
<hbj:listBoxItem key="<%=Unit_Id%>" value="<%=sUnit%>" />
<%
%>
</hbj:dropdownListBox>
</hbj:gridLayoutCell>
<hbj:gridLayoutCell columnIndex="1" rowIndex="3">
<hbj:textView id="listLable" text="To designate a vacant position, click the icon in the 'Create Form' column" design="STANDARD" />
</hbj:gridLayoutCell>
<hbj:gridLayoutCell columnIndex="1" rowIndex="4">
<hbj:tableView
id="myTableView"
headerVisible="true"
footerVisible="true"
fillUpEmptyRows="true"
selectionMode="NONE"
navigationMode="BYPAGE"
onNavigate="myOnNavigate"
visibleFirstRow="<%= myBean.getvisibleRow() %>"
visibleRowCount="5" >
<%
myTableView.setOnHeaderClick("onHeaderClick");
myTableView.setUserTypeCellRenderer(new TableViewCellRenderer());
myTableView.setModel(myBean.gettableModel());
myTableView.setColumnType(TableColumnType.LINK, 3);
myTableView.setColumnType(TableColumnType.LINK, 4);
%>
</hbj:tableView>
</hbj:gridLayoutCell>
</hbj:gridLayout>
</hbj:form>
</hbj:page>
</hbj:content>
Here is the BEAN
package MSSBeanPackage;
//import com.sapportals.htmlb.enum.TableColumnType;
import MSSPackage.SortTableModel;
import com.sapportals.htmlb.table.DefaultTableViewModel;
//import com.sapportals.htmlb.table.TableColumn;
//import com.sapportals.htmlb.table.TableView;
//import com.sapportals.htmlb.table.TableViewModel;
import com.sap.mw.jco.JCO;
import com.sap.mw.jco.JCO.Table;
public class PositionOverviewBean {
// public DefaultTableViewModel tableModel;
public SortTableModel tableModel;
public JCO.Table OrgUnits;
public String ObjId;
public String visibleRow;
public int rowcnt;
public String sTemp;
// Get and Set methods for table model
// public DefaultTableViewModel gettableModel() { return tableModel; }
// public void settableModel(DefaultTableViewModel tableModel) { this.tableModel = tableModel; }
public SortTableModel gettableModel() { return tableModel; }
public void settableModel(SortTableModel IntableModel) { this.tableModel = IntableModel; }
public JCO.Table getOrgUnits() { return OrgUnits; }
public void setOrgUnits(JCO.Table value) { this.OrgUnits = value; }
// Get and Set methods for visiblerow
public String getvisibleRow() { return visibleRow; }
public void setvisibleRow(String visibleRow) { this.visibleRow = visibleRow; }
public int getRowcnt() { return this.rowcnt; }
public void setRowcnt(int rowcnt) { this.rowcnt = rowcnt; }
public String getObjId() { return this.ObjId; }
public void setObjId(String value) { this.ObjId = value; }
Here is the sorting class
package MSSPackage;
import java.util.Collections;
import java.util.Comparator;
import java.util.Vector;
import com.sapportals.htmlb.table.DefaultTableViewModel;
public class SortTableModel extends DefaultTableViewModel implements Comparator {
//protected int currCol;
public int currCol;
protected Vector ascendCol; // this vector stores the state (ascending or descending) of each column
protected Integer one = new Integer(1);
protected Integer minusOne = new Integer(-1);
public String testing;
public SortTableModel()
super();
ascendCol = new Vector();
public SortTableModel(Vector vec)
super(vec);
ascendCol = new Vector();
public SortTableModel(Vector vec, Vector vec2, int numberOfColumns)
super(vec, vec2);
ascendCol = new Vector();
setSortOrder(numberOfColumns);
public int compare (Object v1, Object v2)
// the comparison is between 2 vectors, each representing a row
// the comparison is done between 2 objects from the different rows that are in the column that is being sorted
int ascending = ((Integer)ascendCol.get(currCol)).intValue();
if (v1 == null && v2 == null)
return 0;
else if (v2 == null)
{ // Define null less than everything.
return 1 * ascending;
else if (v1 == null)
return -1 * ascending;
Object o1 = ((Vector)v1).get(currCol);
Object o2 = ((Vector)v2).get(currCol);
// If both values are null, return 0.
if (o1 == null && o2 == null)
return 0;
else if (o2 == null)
{ // Define null less than everything.
return 1 * ascending;
else if (o1 == null)
return -1 * ascending;
if (o1 instanceof Number && o2 instanceof Number)
Number n1 = (Number)o1;
double d1 = n1.doubleValue();
Number n2 = (Number)o2;
double d2 = n2.doubleValue();
if (d1 == d2)
return 0;
else if (d1 > d2)
return 1 * ascending;
else {
return -1 * ascending;
else if (o1 instanceof Boolean && o2 instanceof Boolean)
Boolean bool1 = (Boolean)o1;
boolean b1 = bool1.booleanValue();
Boolean bool2 = (Boolean)o2;
boolean b2 = bool2.booleanValue();
if (b1 == b2)
return 0;
else if (b1)
return 1 * ascending;
else
return -1 * ascending;
else
// default case
if (o1 instanceof Comparable && o2 instanceof Comparable)
Comparable c1 = (Comparable)o1;
Comparable c2 = (Comparable)o2; // superflous cast, no need for it!
try
return c1.compareTo(c2) * ascending;
catch (ClassCastException cce)
// forget it... we'll deal with them like 2 normal objects below.
String s1 = o1.toString();
String s2 = o2.toString();
return s1.compareTo(s2) * ascending;
* This method sorts the rows using Java's Collections class.
* After sorting, it changes the state of the column -
* if the column was ascending, its new state is descending, and vice versa.
public void sort()
Collections.sort(dataVector, this);
//Collections.sort(dataVector);
Integer val = (Integer)ascendCol.get(currCol);
ascendCol.remove(currCol);
if (val.equals(one)) // change the state of the column
ascendCol.add(currCol, minusOne);
else
ascendCol.add(currCol, one);
public void sortByColumn(int column)
this.currCol = column;
sort();
public void setSortOrder(int numberOfColumns)
for (int i = 0; i < numberOfColumns; i++)
ascendCol.add(one);
public void setTesting(String inStr)
testing = inStr;
Any help would be greatly apprciated and rewarded...Hi Don,
be aware that after the method onHeaderClick(Event event) is executed the method doProcessBeforeOutput() is executed as well.
I look over your code and found the following:
1) In method onHeaderClick you sort the table model and store the table model in the bean
2) In method doProcessBeforeOutput() you create a new table model from scratch (in helper method tableViewFormat())and store it in the bean. Thus you overwrite the sorted model.
I suggest that you move the initial creation of the table model in method doInitialization(). Do not forget to store the created table in the bean. In method doProcessBeforeOutput() you retrieve the table model from the bean instead of creating a new one for every request.
Best regards,
Martin -
I've got a very strange problem while sorting table columns in WebDynpro Java.
I followed every step in the tutorial and imported the TableSorter.java into my project. But the columns in my table is still unsortable. I tried every effort but failed to make it sortable. Anyone encountered the same problem with me? Thanks in advance!
PS: I strictly followed the tutorial chapter 11's steps so do not tell me refer to that tutorial.Hello Sumit,
I've just searched the forum again and found a post answered by Armin Reichert:
"A possible reason might be that you have added table columns using the "GroupedColumns" aggregation (which is default in NW04s) but your TableSorter code still assumes that the columns are in the "Columns" aggregation (was default in NW04)."
The way to resolve this issue is simple as follow:
Replace
for (Iterator it = table.iterateColumns(); it.hasNext(); ++index)
by
for (Iterator it = table.iterateGroupedColumns(); it.hasNext(); ++index)
in your TableSorter.java.
I tried this and it worked! Thank you Sumit. -
Sorting problem in TreeMap, please help urgent :-((
Hi
Following is a program, please execute it to see the problem. I am adding four elements in the TreeMap. The problem is when I add the elements it never compares the newly added element with the first element. I was sick of it so to test the TreeMap I created my own small class and defined a Comparator for that class. Following is the code which shows the problem in TreeMap. Am I doing something wrong? Please help its urgent.
import java.util.*;
public class SortingCollection {
public static void main(String[] args) {
SortingCollection sortingCollection = new SortingCollection();
sortingCollection.sortingTest();
public void sortingTest() {
TreeMap treeMap = new TreeMap();
treeMap.put(new Test("Bhushan", 1022), new Integer(1022));
treeMap.put(new Test("Wasil", 1023), new Integer(1023));
treeMap.put(new Test("Ifti", 1020), new Integer(1020));
treeMap.put(new Test("Roshan", 1021), new Integer(1021));
System.out.println(treeMap);
Test test = new Test("Bhushan", 1028);
treeMap.put(test, new Integer(1022));
System.out.println(treeMap);
public class Test implements Comparable {
public String name;
public int age;
public Test(String name, int age) {
this.name = name;
this.age = age;
public int compareTo(Object toBeCompared) {
Test casted = (Test) toBeCompared;
if (name.equals(casted.name)) {
System.out.println("Returning 0 for " + name + " " + casted.name);
return 0;
System.out.println("Returning -1 for " + name + " " + casted.name);
return -1;
public String toString() {
return "[" + name + ", " + age + "]";
}If you are using TreeMap, you should want the keys to be immutable. You can't change the state of the keys of a Map such that their natural order will change, or chaos will happen.
If the key is the GateKeeperInfo class (which has host, port, and # of users as its data members) and the value is "some other object reference which you need", and this reference is closely tied to the GateKeeperInfo, have you considered making it a member of the GateKeeperInfo?
That way you don't need this TreeMap business. You can have the natural ordering imposed on the GateKeeperInfo class (which is apparently comparing the host and port only). You can also have a Comparator object that can compare these objects in a different way (# of users, for instance).
public class MyClass implements Comparable
String host;
int port;
int currNumUsers;
Object someOtherObjectReferenceINeed;
// or if the object reference you need is an Integer, make that last member
// an int...
// Also, let's keep a Comparator in here for comparing # of users.
// See further down for actual implementation...
public static final Comparator BY_NUM_USERS = new NumUsersComparator();
// Use the equal methods to determine whether or not host and port matches
public boolean equals( Object obj )
// Use the compareTo method to compare 2 instances in terms of host and port
public int compareTo( Object obj )
// Make this object take care of changing # of users, outside of the
// Comparable interface.
public int getNumUsers();
public int bumpNumUsers( int byThisAmount ); // changes # of users...
// Beef up this object to take advantage of someOtherObjectReferenceINeed
// Use this Comparator object to compare 2 instances of MyClass
// according to # of users.
public class NumUsersComparator implements Comparator
public int compare( Object a, Object b )
MyClass left = (MyClass)a;
MyClass right = (MyClass)b;
// I am assuming both # of users are of the same sign...positive
return ( right.getNumUsers() - left.getNumUsers() );
// Now when you need to compare, you can do it 2 different ways...
// You can use whatever Collection you fits, List, Set, ...
// I am going to use List in this case
List gateways = new ArrayList;
// add the objects...
gateways.add( /* . . . */ );
// Now let's sort in terms of user/port
Collections.sort( gateways );
// Let's sort in terms of number of users...
Collections.sort( gateways, MyClass.BY_NUM_USERS );
// I am going to mix them around now...
Collections.shuffle( gateways );
// Now let's find the gateway w/ the largest # of users...
MyClass currMaxGateway = Collections.max( gateways, MyClass.BY_NUM_USERS );
.
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How is width measured for shapes and strokes converted?
How is width and height calculated in the transform panel for an object? Does it use an average? An example can be seen in the first image. The lines are not a uniformed width. Also, how are strokes converted from pts to pxls? For instance, if I make
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I just got the iPhone. I have my iPhone connected to iTunes. When I download music from the internet to iTunes, iTunes won't let me simply drag the music I have selected to my iPhone. I looked it up and it said that i need to select "manually manage